LUCA Forms, Letters, User Guides, and other Items

Local Update of Census
Addresses (LUCA) Program Tribal
Government Information Booklet

Issued January 2007

2010 Decennial Census Program
D-1693T

The Local Update of Census Addresses
(LUCA) Program is an integral part of the
2010 Decennial Census Program and
utilizes the expertise of tribal, state, and
local governments to improve the accuracy and completeness of the address
list used to take the census. Tribal, state,
and local governments can contribute to
a complete enumeration of their communities by reviewing and commenting
on the list of housing unit and group
quarters addresses that the U.S. Census
Bureau will use to deliver census
questionnaires.
Background
Recognizing that a complete and accurate address list is essential to a complete and accurate census, Congress
passed the Census Address List Improvement Act of 1994 (Public Law 103-430)
authorizing the Census Bureau to provide the census address list for review
and comment by tribal, state, and local
government liaisons who agree to conditions of confidentiality.
Title 13, United States Code (U.S.C.), provides for the confidential treatment of
census-related information and protects
the addresses contained on the Census Bureau’s address list. Liaisons and
reviewers appointed by tribal governments to review the Census Bureau’s
address list for their reservations and
off-reservation trust lands are required
to sign a confidentiality agreement and
abide by the Census Bureau’s security
guidelines. The LUCA tribal liaison is
also required to perform a data security
self-assessment check. After receiving
signed and completed confidentiality
agreements and security self-assessment
checklists, the Census Bureau will send
Title 13-protected LUCA materials to
tribal liaisons.

Why the LUCA Program Is
Important to Your Reservation
Accurate census data are important to
your reservation in a number of ways.
In addition to the constitutional requirement for the decennial census to apportion seats in the U.S. House of Representatives, census data are used to allocate
federal monies to tribal governments.
Other statistical census data support
grant applications that fund community,
social, economic, and environmental
programs and other needed improvements and enhancements. Census data
also help tribal communities plan for
future needs.
If your tribal government does not have
the staff or financial resources to participate in the LUCA program, you can
designate another level of government
or an agency, such as a county planning
department, regional planning agency,
or state-level agency, that is willing to
assist you or act as your agent in reviewing the LUCA materials.
Training and Support
Training workshops conducted by Census Bureau staff will provide you with
“hands-on” experience using the LUCA
program materials. Self-training aids
will be available to participants who are
unable to attend the workshops. In addition, the 2010 Census Local Update of
Census Addresses (LUCA) Program Tribal
User’s Guide provides detailed instructions and examples for conducting the
LUCA review.

U.S. Department of Commerce
Economics and Statistics Administration
U.S. CENSUS BUREAU

The LUCA Participation Options
The 2010 Census LUCA program offers three
participation options:
Option 1
— Title 13 Full Address List Review
Option 2
— Title 13 Local Address List Submission

What’s New?
The 2010 Census LUCA program offers a number of
improvements:
• One review cycle for all
address types.
• 120 calendar days for
review.
• More advance notice.

Option 3
— Non-Title 13 Local Address List Submission
Option 1 and Option 2 require participants to
sign the confidentiality agreement in compliance
with Title 13, U.S.C., and the data security selfassessment checklist. A signed confidentiality
agreement is not required for Option 3 because
Title 13 data are not provided.

• Comprehensive program
communications, including periodic contact.

Option 1—Title 13 Full Address List Review
Option 1 allows you to review the entire census address
list for your reservation and off-reservation trust land.
This includes both city-style addresses (for example,
101 Red Eagle Road) and noncity-style addresses (for
example, P.O. box, rural route, etc.). This option allows
you to update any city-style address on the census
address list as well as add new city-style addresses. For
census blocks containing all noncity-style addresses,
you can only challenge the count of addresses on
the address count list. If a census block has a mix of
city-style and noncity-style addresses, you can update
individual city-style addresses or challenge the count
of addresses for the census block, but you cannot
do both.
Each LUCA tribal liaison and reviewer must sign and
return the confidentiality agreement. The LUCA tribal
liaison is also required to perform a data security selfassessment and complete, sign, and return the selfassessment checklist.

• Three program options.
• A MAF/TIGER® Partnership Software (MTPS)
application that combines the census address
list, address count list,
and digital maps in an
easy-to-use software
package.

The Census Bureau provides:
• A complete Census Bureau address list for your
reservation and/or off-reservation trust land.
• A count of addresses by census block within your
reservation and/or off-reservation trust land.
• Census Bureau paper maps or digital shapefiles.
• A 2010 Census LUCA Program Tribal User’s Guide.
• MAF/TIGER® Partnership Software application
(if requested).
• Training.
This option allows you to update any city-style
address on the census address list or challenge
counts on the address count list.

You provide:
• Updates (additions, deletions, corrections) to the
Census Bureau’s city-style addresses.
• Challenges to the address counts in census blocks.
• Updates and corrections to the features and legal
boundaries on the Census Bureau’s maps or digital
shapefiles.
Photo by Lee Marmon via National American Indian Housing Council.
Laguna Reservation, NM.

2

Note—Use of digital shapefiles requires a geographic
information system software package, such as the
Census MAF/TIGER Partnership Software.

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Option 2—Title 13 Local Address
List Submission
The Title 13 Local Address List
Submission option allows you
to submit your local computerreadable address file (city-style
addresses only) in a predefined
Census Bureau format. The
Census Bureau will provide our
address list and address count
list (computer-readable files only)
as a reference for your reservation and/or off-reservation trust
land. Our address list includes
both city-style and noncity-style
addresses. You cannot update the census address list or
challenge the address counts. The Census Bureau will
match your local address file to ours and make corrections to our census address list.
Each LUCA tribal liaison and reviewer must sign and
return the confidentiality agreement. The LUCA tribal
liaison is also required to perform a data security selfassessment and complete, sign, and return the selfassessment checklist.
In this option you will receive a complete Census
Bureau address list and an address count list by
block as a reference for your reservation and/or
off-reservation trust land.

Option 3—Non-Title 13 Local Address
List Submission
The Non-Title 13 Local
Address List Submission option offers you an
opportunity to submit your
local computer-readable
address file (in a predefined
Census Bureau format) to the
Census Bureau if you choose not
to sign a confidentiality agreement. Under this option, you do
not receive the census address list. However, you do
receive, as a reference, an address count list (computerreadable only) that contains address counts for each
of the census blocks within your reservation and/or
off-reservation trust land. The Census Bureau will match
your address file to ours and make corrections to our
census address list.
Option 3 allows you to submit your local
address file in a Census Bureau predefined
computer-readable format.
A signed confidentiality agreement is not
required for Option 3.

The Census Bureau provides:
• A complete Census Bureau address list for your
reservation and off-reservation trust land (computerreadable).
• A count of addresses by census block within your
reservation and off-reservation trust land (computerreadable).
• Census Bureau paper maps or digital shapefiles.
• A 2010 Census LUCA Program Tribal User’s Guide.
• MAF/TIGER® Partnership Software
(if requested).
• Training.
You provide:
• Your local address file (containing only city-style
addresses) in a predefined computer-readable format.
• Updates and corrections to the features and legal
boundaries on the Census Bureau’s maps or digital
shapefiles.
Note—Use of digital shapefiles requires a geographic
information system software package, such as the
Census MAF/TIGER Partnership Software.
The Census Bureau provides:
• A count of addresses by census block within
your reservation and off-reservation trust land
(computer-readable).
• Census Bureau paper maps or digital shapefiles.
• A 2010 Census LUCA Program Tribal User’s Guide.
• MAF/TIGER® Partnership Software application
(if requested).
• Training.
You provide:
• Your local address file (containing only city-style
addresses) in a predefined Census Bureau computerreadable format.
• Updates and corrections to the features and legal
boundaries on the Census Bureau’s maps or digital
shapefiles.
Note—Use of digital shapefiles requires a geographic
information system software package, such as the
Census MAF/TIGER Partnership Software.

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Option 2 allows you to
submit your local address
file in a Census Bureau
predefined computerreadable format.

3

LUCA Program Materials for Tribal Governments
The Census Bureau provides the materials required to participate in the LUCA program. Depending on the option
you choose, these materials include:
• 2010 Census LUCA Address List
Contains all of the known census addresses within your reservation and off-reservation trust land.
• 2010 Census LUCA Address List Add Page
Used to add addresses to the census address list by participants who request the paper format address list.
• 2010 Census LUCA Address Count List
Contains the counts of the number of addresses for each census block within your reservation and
off-reservation trust land.
• 2010 Census Local Update of Census Addresses (LUCA) Program Tribal User’s Guide
Contains your instructions for updating the census address list, address count list, paper maps, or digital
shapefiles.
• 2010 Census LUCA Paper Maps or Digital Shapefiles
Created from the Census Bureau’s Topologically Integrated Geographic Encoding and Referencing (TIGER®)
System, allows you to submit feature and boundary updates either on the paper maps or electronically.
• MAF/TIGER® Partnership Software
Geographic information system (GIS) software for use with digital shapefiles (see below).

Media Formats
Paper Format—The 2010 Census LUCA address list,
address list add page, and address count list are available in paper printouts for Option 1 participants only.
Participants who select paper materials can choose to
receive either paper maps or digital shapefiles showing
the features and boundaries of their reservation and
off-reservation trust land. Paper address lists will not be
provided to entities with over 6,000 addresses (1,000
pages).
Computer-Readable Format (CD-ROM or DVD)—
The Census Bureau offers pipe-delimited ASCII files
for both the 2010 Census LUCA address list and the
address count list on CD-ROM or DVD. These files are
easily imported into a variety of commercial spreadsheet or database
applications. Option 1
participants with more
than 6,000 addresses
will find the computerreadable format to be
more flexible. Option
2 and Option 3 participants are eligible to
receive only computerreadable files. Participants who select
computer-readable lists
can choose to receive
either paper maps or
digital shapefiles.

4

MAF/TIGER® Partnership Software—The MAF/
TIGER® Partnership Software (MTPS) is a GIS application that combines the 2010 Census LUCA address list,
address count list, and maps into an easy-to-use software package. The MTPS allows participants to update
the address list, address count list, and maps and to
import local address lists and digital shapefiles for comparison with the Census Bureau data. All address and
map updates will meet the Census Bureau’s formatting
requirements. This software is appropriate for any reservation and only requires a personal computer using a
Windows 98 or newer operating system.

The MAF/TIGER® Partnership Software application is
new for the 2010 Census LUCA Program.

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Paper Products

The information contained on the census
address list includes
census geographic
codes, such as state
and county codes, tribal
census tract and block
numbers, address
information, and group
quarters identification.
This list is provided only
to those participants
who choose Option 1,
paper media.

EX

AM

PL
E

Address List

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

5

Paper Products
Address List Add Page

EX

AM

PL
E

The LUCA address list add
page is used to add citystyle addresses within a
reservation and/or offreservation trust land that
do not appear on the census address list. This form
is provided only to those
participants who choose
Option 1, paper media.

6

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Paper Products

The LUCA address count
list contains the count of
housing unit and group
quarters addresses for
each census block within
a reservation and/or offreservation trust land.
The list contains 50 census blocks per page. This
list is provided only to
those participants who
choose Option 1, paper
media.

EX

AM

PL
E

Address Count List

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

7

Computer-Readable Address List Record Layout

Computer-Readable Products

The information contained on each census address record includes census geographic codes, such as state and
county codes, and census tract and block numbers, as well as address information and group quarters identification. Each address record has a maximum length of 460 characters and contains 28 fields of information. The
character length for each record may vary. This list is sent to all Option 1 participants who choose computerreadable media and to all Option 2 participants.
Maximum
character
length
6
7
9
1
2
3
3
1
7
5
1
35
3
2
14
100
14
2
3
100

Field name

Description/notes

Entity ID code
Line number
MAFID
Action code
State code
County code
Tribal subdivision
Trust land flag
Census tract number
Census block number
Group quarters flag
House number
Street name prefix qualifier
Street name prefix direction
Street name prefix type
Street name
Street name suffix type
Street name suffix direction
Street name suffix qualifier
Location description or GQ name

53
5
50
5
5

Apartment/unit number
City-style mailing ZIP Code
Noncity-style mail delivery address
Noncity-style mailing ZIP Code
Structure point

11
12
1

Structure latitude
Structure longitude
City-style address flag

Unique code assigned by the Census Bureau to each reservation and/or off-reservation
trust land
Unique number for each address record in the file
Unique identification number assigned to each census address
Valid codes: A, C, D, J, or N; entered by participant
2-digit current state code
3-digit current county code
3-digit tribal subdivision code
Displays a ‘‘Y’’ if the area is part of a trust land
4-digit current census tract number, a period, and a 2-digit number suffix
4-digit current census block number, plus a 1-digit alpha character suffix, if applicable
Displays a ‘‘Y’’ if the unit is a group quarters
Housing unit’s or group quarters’ assigned house number
e.g., ALT, BUS, HIST, PRIVATE
e.g., N, W, SE
e.g., HWY, RT, US
Full street or road name
e.g., ST, CT, AVE, DR
e.g., N, W, SE
e.g., EXT, ALT, BUS
Description of living quarters (e.g., red ranch w/white shutters) or name of group
quarters (e.g., senior living center)
Within structure descriptor or identifier, such as APT 5 or 1st FL FRNT
5-digit ZIP Code for a city-style mailing address
Rural route and box number, post office box number, etc.
5-digit ZIP Code for a noncity-style mailing address
4-digit number, plus 1-digit alpha assigned by the Census Bureau to structures in areas
that contain predominantly noncity-style addresses (RR, P.O. box #, general delivery, etc.)
The latitude coordinate in degrees, with 6 implied decimals
The longitude coordinate in degrees, with 6 implied decimals
Displays a ‘‘Y’’ if the address is city-style, ‘‘N’’ if noncity-style

Computer-Readable Address Count List
The address count list file contains the count of housing unit and group quarters addresses for each census block
within a jurisdiction. Each census block record is at least 57 characters in length and contains nine (9) fields of
information. The character length of each record may vary. This file is sent to Option 1 participants who choose
computer-readable media and to all Option 2 and Option 3 participants.
Maximum
character
length

8

Field name

12
2
3
7

Entity ID code
State code
County code
Census tract and suffix

5

Census block and suffix

7
7
7
7

Census count of housing unit addresses
Tribal count of housing unit addresses
Census count of group quarters addresses
Tribal count of group quarters addresses

Description/notes
Unique code assigned by the Census Bureau to each entity
2-digit current state code
3-digit current county code
4-digit current census tract number, a period, plus a 2-digit number
suffix
4-digit current census block number, plus a 1-digit alpha character
suffix, if applicable
Census Bureau’s most recent count of housing unit addresses
Blank field to enter the tribal count of housing unit addresses
Census Bureau’s most recent count of group quarters addresses
Blank field to enter the tribal count of group quarters addresses

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Census Bureau Paper Maps
and Digital Shapefiles
The Census Bureau provides you
with one set of paper maps or
digital shapefiles to use in conjunction with the address list and
address count list. You may use the
paper maps or digital shapefiles to
submit any needed corrections to
your reservation and/or offreservation trust land features
and legal boundaries.
Paper Maps
The Census Bureau paper maps
display roads, streets, and other
physical features, along with the
most recent boundaries known to
the Census Bureau. Use the maps
to identify feature and/or legal
boundary corrections.
Digital Shapefiles
The digital shapefiles, created from
the Census Bureau’s TIGER® System, allow you to submit feature
and boundary corrections electronically. Shapefiles require the
use of GIS software. All shapefiles
produced by the Census Bureau are
in Environmental Systems Research
Institute (ESRI) shapefile format.
Participants must use the Census
Bureau-supplied digital shapefiles
to make digital submissions. The
Census Bureau-supplied shapefiles
are in a format that contains all
of the current codes necessary to
correct addresses as well as submit
feature and boundary corrections.
Census digital shapefiles do not
contain Title 13 information.
Census Bureau Paper Maps
The Census Bureau paper maps
display roads, streets, and other
physical features within a reservation, and the most recent reservation and off-reservation trust land
boundaries known to the Census
Bureau. Structure points identifying individual housing unit and
group quarters locations may be
displayed in areas of noncity-style
addresses.

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

9

When Can Tribal Governments Participate?
Once the Census Bureau receives your completed registration materials, the LUCA program materials will be mailed
to you. You have 120 calendar days from the receipt of
your LUCA materials to conduct your review and return your
submission. The review and update period is from August
2007 to April 2008.

You have 120 calendar days from
the receipt of your LUCA materials
to conduct your review and return
your submission.

For example:

Strategies for Review
Each participating tribal government must decide for
itself how to conduct its review of the LUCA materials. Consider your available time and the local address
information you have readily available, as well as your
staff and computer resources. If a complete review is
not possible, the Census Bureau recommends that you
focus your review on areas where addresses are more
likely missed or incorrect.

Focus your review on areas where
addresses are more likely missed
or incorrect.

• Areas of new construction
• E-911 address conversion areas
• Single-family homes converted to multifamily homes,
and vice versa
• Warehouses converted to residential units
• New mobile home parks or new scattered mobile
homes
• Apartment buildings with irregular or missing
numbering schemes for the individual units
• Newly acquired trust land

Tribal governments are in the best position to identify
areas with potentially missing or incorrect addresses.

• Areas along governmental boundaries

Suggested Local Address Sources
Each tribal LUCA participant will likely have different address sources. In addition, there may be a list
of addresses within your jurisdiction maintained by
another agency or level of government.
The following is a list of address sources that may be
available to you:
• New housing construction or building permits
• E-911 address files
• Housing inspection records
• Planning and zoning records
• Local utility records
• School enrollment records
• Voter registration files

10

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

What Happens to Your Corrections?
Once you have reviewed and corrected the Census Bureau
address list and/or the address count list and maps or digital
shapefiles, you must return them to your Census Bureau regional
office. The Census Bureau will then:
• Review and process the suggested address changes.
• Update the Census Bureau’s geographic database with the
suggested map corrections.
• Conduct the Address Canvassing (field check) Operation to
validate the census address list and maps.

Option 2—Title 13 Local Address List Submission

The Feedback Process
The Census Bureau will provide feedback materials after
conducting the Address Canvassing Operation. The
field checks will determine the validity of all the corrections you submit. In addition, field checks will ensure
that the Census Bureau has complete address coverage
as well as current map features for your reservation
and/or off-reservation trust land, even if you decide not
to participate in the LUCA program. Depending upon
the participation option you choose, you will receive
the following feedback materials:

An updated:
• Census address list with detailed feedback on each
address provided by your tribal government.
• Address count list.
• Map(s) or digital shapefile for your reservation and/
or off-reservation trust land.

Option 1—Title 13 Full Address List Review

Option 3—Non-Title 13 Local Address List
Submission

An updated:

An updated:

• Census address list with detailed feedback on each
address commented on by your tribal government.

• Address count list.
• Map(s) or digital shapefile for your reservation and/
or off-reservation trust land.

• Address count list.
• Map(s) or digital shapefile for your reservation and/
or off-reservation trust land.
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The feedback materials are available in computerreadable or paper format. The feedback materials you
receive will be in the same format you requested for
your initial review. Your Census Bureau regional office
can answer questions regarding your feedback
materials.

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opportunity for you to examine the results
of the Address Canvassing Operation.

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Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

11

Summary of LUCA Program Activities
In July 2007 you will receive your 2010 Census LUCA
invitation and registration package. At that time,
you will:

• Plan your strategy for reviewing the 2010 Census
LUCA materials.

• Determine which participation option your tribal
government prefers.

• Review and correct 2010 Census LUCA materials.

• Designate a 2010 Census LUCA official liaison.

Finally, you will:

- Indicate your tribal government’s media type
preference (either paper or computer-readable) on
which to receive LUCA materials.
- Sign and return the confidentiality agreement and
self-assessment checklist form (required for Option
1 and Option 2).
- Sign and return the 2010 Census LUCA program
registration form and product preference form.
Next, you will:

• Obtain 2010 Census LUCA training.

• Submit corrected LUCA materials.

• Review feedback materials containing detailed comments on your address submissions.
• Appeal address discrepancies if you do not agree
with your feedback (Option 1 and Option 2 participants only).
• Return all Title 13 materials to your Census Bureau
regional office.
To find out more about the LUCA program, go to
.

• Identify available local address source materials for
your 2010 Census LUCA review.

The 2010 Census LUCA Program Schedule
TIME FRAME

ACTIVITY

January 2007

LUCA advance notice letters mailed to the highest elected official and other contacts
in all active functioning governments.

July 2007

Invitation letters and registration materials mailed to the highest elected official and
other contacts of each government.

July 2007 to
January 2008

Invited governments register for LUCA, and the Census Bureau ships the LUCA review
materials to each participating government.

August 2007 to
April 2008

LUCA participants review and update the address list and return their comments to
the Census Bureau’s regional office within 120 days of receipt of materials.

April 2008 to
October 2008

Census Bureau reviews participants’ LUCA submissions and updates the Master
Address File and TIGER® geographic database.

November 2008
to May 2009

Census Bureau prepares for and conducts the Address Canvassing Operation using
global positioning system (GPS) equipped hand-held computers.

June 2009 to
October 2009

LUCA participants receive feedback materials showing how the Census Bureau
processed each government’s LUCA submissions.

September 2009 to
December 2009

LUCA participants review their LUCA feedback and have the opportunity to appeal the
results to the LUCA Appeals Office.

September 2009 to
January 2010

LUCA Appeals Office reviews and adjudicates appeals.

12

Local Update of Census Addresses (LUCA) Program Tribal Government Information Booklet
U.S. Census Bureau

Census Bureau Regional Offices—Contact Information

Georgia
Alabama

Atlanta Regional Office: Geography
101 Marietta Street, NW, Ste. 3200
Atlanta, GA 30303-2700
(404) 331-1339
Fax: (404) 331-1570
E-mail:
atlanta.geography@census.gov

Detroit Regional Office: Geography
1395 Brewery Park Boulevard, Ste. 100
Detroit, MI 48207
(313) 656-0183
Fax: (313) 259-2529
E-mail:
detroit.geography@census.gov

Boston Regional Office: Geography
4 Copley Place, Ste. 301
P.O. Box 9108
Boston, MA 02117-9108
(617) 424-4513
Fax: (617) 424-0547
E-mail:
boston.geography@census.gov

Kansas City Regional Office: Geography
1211 North 8th Street
Kansas City, KS 66101-2129
(913) 551-6833
Fax: (913) 551-6780
E-mail:
kansas.city.geography@census.gov

Charlotte Regional Office: Geography
901 Center Park Drive, Ste. 106
Charlotte, NC 28217-2935
(704) 424-6420
Fax: (704) 424-6966
E-mail:
charlotte.geography@census.gov

Los Angeles Regional Office: Geography
15350 Sherman Way, Ste. 400
Van Nuys, CA 91406
(818) 267-1724
Fax: (818) 267-1714
E-mail:
los.angeles.geography@census.gov

Chicago Regional Office: Geography
1111 W. 22nd Street, Ste. 400
Oak Brook, IL 60523-1918
(630) 288-9245
Fax: (630) 288-9313
E-mail:
chicago.geography@census.gov

New York Regional Office: Geography
New York
395 Hudson Street, Ste. 800
New York, NY 10014
Pennsylvania
(212) 584-3430
Fax: (212) 584-3419
E-mail:
new.york.geography@census.gov

Michigan

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Region

New Jersey

Dallas Regional Office: Geography

Philadelphia Regional Office: Geography

8585 N. Stemmons Freeway, Ste. 800S

833 Chestnut Street, Ste. 504

Dallas, TX 75247

Philadelphia, PA 19107-4405

(214) 253-4470

(215) 717-1830

Fax: (214) 655-5365

Fax: (215) 717-0875

E-mail:

E-mail:

dallas.geography@census.gov

philadelphia.geography@census.gov

Denver Regional Office: Geography
6900 W. Jefferson Avenue, Ste. 100
Denver, CO 80235
(303) 264-0290
Fax: (303) 969-6776
E-mail:
denver.geography@census.gov

Southern
California

Seattle Regional Office: Geography
601 Union Street, Ste. 3800
Seattle, WA 98101-1074
(206) 381-6260
Fax: (206) 381-6313
E-mail:
seattle.geography@census.gov

Pennsylvania
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Maryland

Alaska
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Northern
California

Oregon

Idaho