Attachment T - CECPI PSU Sample Selection

June 24, 2002
MEMORANDUM FOR:

CHESTER E. BOWIE, Chief
Demographic Surveys Division
Bureau of the Census

FROM

:

KENNETH V. DALTON
Associate Commissioner
Prices and Living Conditions
Bureau of Labor Statistics

SUBJECT

:

Specifications for the Selection of
CE/CPI Samples in PSUs Based
on the 2000 Census

I. Introduction
The overall design for selecting the Consumer Expenditure Survey (CE) sample from the
2000 Census frame remains unchanged. The eligible population continues to be all
civilian noninstitutional persons, including people residing in boarding houses, housing
facilities for students and workers, staff units, mobile home parks, permanent-type living
quarters in hotels and motels, and eligible group quarters. Appendix I shows the basic
survey design for this CE population. Because Core Based Statistical Area (CBSA)
definitions will not be final until after CE sample selection has begun, the Bureau of the
Census (BOC) will draw a sample in all Primary Sampling Units (PSU) based on the
geographic boundaries specified in the data files accompanying this memo and also listed
in Appendix II.
PSUs are divided into four size classes: A, X, Y, and Z. The A, X, and Y PSUs are
constructed based on preliminary CBSA definitions. The A PSUs were constructed by
combining counties using 1990 Metropolitan Statistical Area definitions with adjustment
based on preliminary CBSA definitions. The X PSUs are metropolitan CBSAs not
contained in any A PSU. The Y PSUs are micropolitan CBSAs not contained in any A
PSU. The Z PSUs, which are used only for CE, are defined by the Bureau of Labor
Statistics (BLS) in terms of counties not in any CBSA.
Requirements for the Telephone Point of Purchase Survey for the PSU sample based on
the 2000 Census will be sent later and are not included in this memorandum.

For the Diary and Interview survey, unclustered systematic samples will be selected
within each PSU listed in Appendix II. The reference period for the Diary Survey will
continue to be two weeks, and the Interview Survey will continue to have five quarterly
interviews. The phase-in period for the 2000-based sample will begin in November
2004. For each survey, sample units will be grouped into 24 representative “sample
designations” of equal size. Enough of these sample designations should be assigned
sample dates to cover the period 2005 through 2018, with the remaining sample
designations set aside as “reserve” sample. The reserve sample allows for sample
expansion, methods development, and research.
The Consumer Price Index (CPI) Permit New Construction Housing Sample should be
selected to yield a total of 120 permit new construction units per month across all
selected CPI PSUs. The housing units should be selected in such a way as to yield an
expected four housing units per hit.
The following details are not meant to be all-inclusive, but instead highlight areas of
importance in the sample selection process.
II. Self-representing PSUs and the Basic Survey Design
The BLS has selected 28 A (self-representing) PSUs. With the exception of Honolulu
and Anchorage, each self-representing PSU has a population greater than 2 million
people based on 2000 Census data and preliminary CBSA definitions.
The basic survey design appears in Appendix I. There will be four size classes, A, X, Y,
and Z. The X and Y PSUs are metropolitan and micropolitan CBSAs, respectively, that
are not included in any A PSU and are not self-representing. The BLS divided the nonCBSA area of the U.S. into the Z PSUs that were formed from adjacent counties with a
total population intended to be large enough to support CE sample requirements.
A list of the selected PSUs appears in Appendix II. Samples for CE/CPI should be
selected within the geographic boundaries of each PSU shown in Appendix II. A letter
and three-digit number identify each selected PSU. The number is even for all nonselfrepresenting PSUs. The Z PSUs are to be used only for CE. Further details are in
Section V, Contents of the Data Files.
The selection of this PSU sample was done using a stratified sample design with
keyfitzing and controlled selection. All nonself-representing PSUs (X, Y and Z PSUs)
were stratified. The strata were created in the twelve region-size classes (4 Census
regions times 3 size classes (X, Y and Z)) using a methodology similar to that employed
for the 1987 and 1998 Revisions. The probabilities of selection for the X, Y and Z PSUs
were Keyfitzed using a modified version of the 1998 Revision PSU selection Keyfitzing
program. One PSU was selected from each stratum using a newly developed three-way
controlled selection program with controls on states, strata and overlap. Detailed
documentation of the PSU selection process is being written in a paper for the 2002 Joint
Statistical Meetings.

2

III. Diary and Interview Surveys
The basic procedures for selecting the Diary and Interview samples remain unchanged.
Important points are summarized below.
• The within-PSU sort order for the systematic sampling of units is left to the
discretion of the BOC with the understanding that its research and conclusions
will be clearly documented and provided to the BLS.
• Sample selection procedures for the Unit, Area, Permit, and Group Quarters
sampling frames should be designed to avoid any clustering.
• The number of interviewed households should remain constant over time. As
the sample size increases in the Permit frame, adjustments should be made to the
other sampling frames to keep the overall number of interviewed households
constant.
• The assignment of placement day for the Diary should be done in such a way as
to ensure a representative distribution of sample units within random groups,
halfsamples, months, and days of the week. Any cross-classification by these
variables should yield a representative sample. Placement days should be strictly
adhered to by the field.
Allocating the Nationwide Sample to Individual PSUs
The CE budget allows for 7,700 interviewed households per year in the Diary survey, and
7,700 interviewed households per quarter in the Interview survey (interviews 2-5 only) at
the national level.1 For each survey the nationwide sample of 7,700 interviewed
households will be allocated to individual PSUs in two different ways depending on PSU
size: 400 interviewed households will be allocated to Z PSUs, and the remaining 7,300
interviewed households will be allocated to A, X, and Y PSUs. We will limit the target
number of interviewed households for Z PSUs to 400 to allow more of the sample to be
allocated to A, X, and Y PSUs, which are used by the CPI. The nationwide sample
should be allocated to individual PSUs as specified below.
The Z PSUs will have 400 interviewed households per year in the Diary survey, and 400
interviewed households per quarter in the Interview survey (interviews 2-5 only). These
400 interviewed households should be allocated to individual Z PSUs directly
proportional to the population that each PSU represents. The populations represented by
Z PSUs are listed in Appendix III, Table 1.
1

This is expected to yield 16,170 usable interviews per year in the Diary survey, and 32,340 usable
interviews per year in the Interview survey. These estimates come from assuming that 7,700 households
contain 8,085 (=7,700×1.05) consumer units. Hence there will be approximately 16,170 usable interviews
per year in the Diary survey (2 weekly diaries per consumer unit), and 32,340 usable interviews per year in
the Interview survey (8,085 consumer units per quarter times 4 quarters per year).

3

The X and Y PSUs are grouped into 8 region-size classes. They are created by crossclassifying the four regions of the country (Northeast, Midwest, South, West) with the
two size classes (X, Y). For allocation these 8 region-size classes are treated just like
other self-representing PSUs (A PSUs). Thus for the sample allocation process we define
a CPI Index Area to be any one of the 28 A PSUs, or any one of the 8 X/Y region-size
classes, for a total of 36 CPI Index Areas.
In the 36 CPI Index Areas usable interviews will be collected from 7,300 households per
year in the Diary survey, and 7,300 households per quarter in the Interview survey
(interviews 2-5 only). The 7,300 interviewed households should be allocated to the 36
CPI Index Areas as close to population proportionality as possible, subject to the
constraint that each CPI Index Area contain at least 80 interviewed households per year
in the Diary survey, and at least 80 interviewed households per quarter in the Interview
survey. The number of interviewed households allocated to the X/Y region-size classes
should then be allocated to the individual CE PSUs within the region-size classes directly
proportional to the population represented by the PSU. The populations represented by X
and Y PSUs are listed in Appendix III, Tables 2 and 3, respectively.
The Phase-In and Phase-Out Period
For the Diary survey, data collection for the 1990-based sample will continue through
January 2005. The actual placement of the Diary form and subsequent 14-day reference
period is contingent on the “earliest placement date” assigned to the sample case. The
last possible “earliest placement date” assigned for the 1990-based Diary sample is
December 31, 2004.
For the Diary Survey in continuing and new areas, the 2000-based sample will be
introduced in January 2005.
For the Interview Survey, the phase-in period for the 2000-based redesign sample will
begin in November 2004. Phase-in/out will occur over a 5-month period (November
2004 – March 2005) in the dropped and new areas, and will occur over a 12-month
period (November 2004 – October 2005) in the continuing areas. During the phasein/out period, the following will occur:
Dropped areas
• Interviews using the 1990-based sample will be collected through March 2005.
• The incoming rotation group (using the 1990-based sample) for the first quarter
of 2005 will not be introduced in dropped areas.
Continuing areas
• The final interviews using the 1990-based sample will occur in October 2005.
• The incoming rotation group (using the 2000-based sample) will be introduced
beginning in November 2004.

4

New areas
• The sample in new areas will be introduced beginning in November 2004.
• The incoming rotation groups (using the 2000-based sample) will be introduced
beginning in November 2004.
• Sample introduced in January 2005 (using the 2000-based sample) will include
only three of the four rotation groups originally introduced in November 2004
because no phase-in interviews will occur in October 2004.
Since phase-in begins in the second month of the last quarter of 2004, only two-thirds of
the sample in new and continuing areas will be introduced in that period. After phase-in
is completed in October 2005, the rest of the 2000-based sample will be introduced using
the ongoing rotation pattern.
IV. CPI Permit New Construction Housing Sample
The sample size for the CPI Permit New Construction Housing Sample is 120 permits per
month spread throughout all CPI PSUs. The BOC will use data from the past to project
future housing unit permit construction in permit construction areas within the selected
PSUs. Several years of data will be used for the the BOC's predictions. The allocation of
the sample to PSUs will be proportional to the predicted new construction permit housing
units in each PSU.
The BOC will provide the BLS with the sample size and sampling interval in each PSU
and the method of sample allocation. The sample should be selected with an expected
four housing units per hit from a frame consisting of permits for new housing units
constructed since the 2000 Census. In order to help the BLS field staff locate the sample,
the BOC should provide the permit office location and permit number of each sample
unit, the unit's address including zip code, and the name of the complex in which the unit
lies. Urban/Rural status of new construction permits is no longer needed for the CPI
Permit New Construction Housing Sample and should not be provided. If no address is
sent, then the BOC should provide the BLS with detailed street sketch maps. In addition,
the BOC should provide the BLS with an annually updated electronic list of Permit
Offices, which includes an accurate telephone number, and the name of the person in
charge.
V.

Contents of the Data Files

The data files contain records defining the selected PSUs in terms of state-county
combinations and the stratum populations and probabilities of selection. The layout of
the data files is contained in Appendix IV.
The data file censout2000cpi.sdf contains all of the PSUs used for the CPI-U. These
PSUs include all of the selected A, X, and Y PSUs. These PSUs are also used for CE.
The stratum population is the sum of the population of all PSUs in the same stratum as
the selected PSU. The final column is the unconditional probability of selection, which is
defined as the PSU population divided by the stratum population.
5

The data file censout2000ce.sdf contains all Z PSUs, which are used only by CE. Some
of the selected Z PSUs had too little population to accommodate the CE Survey. Each of
these PSUs was augmented with counties in the same stratum to bring them up to
sufficient size. On the data file censout2000ce.sdf, these added counties are not
distinguished from the originally selected PSU’s counties which contained insufficient
population. The column for stratum population contains the total stratum population for
all records associated with each Z stratum. The unconditional probability is defined as
the augmented Z PSU population divided by the stratum population.

Attachments
OPLC/SMD
WJOHNSON/062402/A0202.6/rm. 3655 PSB/Tele. 691-6921
cc:

6

APPENDIX I

Distribution of Halfsample Equivalents in Size Classes by Region for CE and for
CPI-U
136-CE and 120-CPI-U

Region
Northeast
Midwest
South
West
Total

A
14
12
14
22
62

X
4
12
18
8
42

Y
2
4
6
4
16

CPI-U
Total
(AXY)
20
28
38
34
120

Z
2
4
6
4
16

CE
Total
(AXYZ)
22
32
44
38
136

Note 1: The A PSUs are self-representing. The X PSUs are
all other metropolitan CBSAs, and the Y PSUs are
micropolitan CBSAs. Each A, X, and Y PSU is one or more
CBSA(s) with preliminary boundaries defined by the BOC. The
non-CBSA area of the U.S. is divided into Z PSUs by the BLS.
Each Z PSU consists of adjacent counties in the non-CBSA
area.
Note 2: The number of halfsample equivalents for X, Y, and
Z size classes is the same as the number of PSUs in those
classes.

APPENDIX II
OFFICE OF PRICES & LIVING CONDITIONS/STATISTICAL METHODS DIVISION
CONSUMER PRICE INDEX/CONSUMER EXPENDITURE SURVEY
86 PSU DESIGN CPI-U
102 PSU DESIGN CE
NORTHEAST REGION
Area

PSU

PSU Name

Definition (County,State)

A101
A101

A109
A110

New York,NY
New York-Connecticut Suburbs

A101

A111

New Jersey Suburbs

A102

Philadelphia-WilmingtonAtlantic_City,PA-NJ-DE-MD

A103

Boston-Brockton-Nashua,MA-NH-ME-CT

A104

Pittsburgh,PA

X102
X104
X106
X108
Y102
Y104
Z102
Z104

Reading PA
Syracuse NY
Providence-Warwick RI
Sharon-Hermitage PA
Augusta-Waterville ME
Ithaca NY
Somerset,ME
Allegany-Wyoming,NY

Bronx,Kings,New York,Queens,Richmond,NY
Fairfield,Hartford,Litchfield,Middlesex,
New Haven,Tolland,CT;Dutchess,Nassau,
Orange,Putnam,Rockland,Suffolk,Westchester,NY
Bergen,Essex,Hudson,Hunterdon,Mercer,
Middlesex,Monmouth,Morris,Ocean,Passaic,
Somerset,Sussex,Union,Warren,NJ
New Castle,DE;Cecil,MD;Atlantic, Burlington,
Camden,Cape May,Cumberland,Gloucester,
Salem,NJ;Bucks,Chester,Delaware,Montgomery,
Philadelphia,PA
Windham,CT; Bristol, Essex, Hampden,
Hampshire,Middlesex,Norfolk,Plymouth,Suffolk,
Worcester,MA;York,ME;Hillsborough,Merrimack,
Rockingham,Strafford,NH
Allegheny,Armstrong,Beaver,Butler,Fayette,
Washington,Westmoreland,PA
Berks,PA
Madison,Onondaga,Oswego,NY
Bristol,Kent,Providence,Washington,RI
Mercer,PA
Kennebec,ME
Schuyler, Tompkins,NY
Somerset,ME
Allegany,Wyoming,NY

Stratum
CPI-U
8008278
7718773

2000 Pop.
Total
8008278
7718773

6708052

6708052

6188463

6188463

7098363

7098363

2431087

2431087

3583761
2528670
2079175
2700148
1360710
1582049
0
0

3583761
2528670
2079175
2700148
1360710
1582049
894407
1344960

2

APPENDIX II (Continued)
MIDWEST REGION
Area

PSU

PSU Name

Definition (County,State)

A207

Chicago-Gary-Kenosha,IL-IN-WI

A208

Detroit-Ann_Arbor-Flint,MI

A209

St. Louis,MO-IL

A210

Cleveland-Akron,OH

A211

Minneapolis-St. Paul,MN-WI

X210
X212

Madison WI
Milwaukee WI

X214
X216
X218

South Bend-Mishawaka IN
Rochester MN
Cincinnati OH

X220
X222
X224
X226

Decatur IL
Lincoln NE
Elkhart-Goshen IN
Kansas City MO

X228
X230
X232
Y206
Y208
Y210
Y212

Saginaw MI
Springfield MO
Youngstown-Warren OH
Whitewater WI
Bellefontaine OH
Brookings SD
Macomb IL

Cook,DeKalb,Du Page,Grundy,Kane,Kankakee,
Kendall,Lake,McHenry,Will,IL;Lake,Newton,
Porter,IN;Kenosha,WI
Genesee,Lapeer,Lenawee,Livingston,Macomb,
Monroe,Oakland,St. Clair,Washtenaw,Wayne,MI
Bond,Clinton,Jersey,Macoupin,Madison,Monroe,
St. Clair,IL;Franklin,Jefferson,Lincoln,
St. Charles,St. Louis,St. Louis city,
Warren,Washington,MO
Ashtabula,Cuyahoga,Geauga,Lake,Lorain,
Medina,Portage,Summit,OH
Anoka,Benton,Carver,Chisago,Dakota,Hennepin,
Isanti,Ramsey,Scott,Sherburne,Stearns,
Washington,Wright,MN; Pierce,St. Croix,WI
Columbia,Dane,WI
Milwaukee,Ozaukee,Racine,Washington,
Waukesha,WI
St. Joseph,IN
Dodge,Olmsted,Wabasha,MN
Dearborn,Ohio,IN;Boone,Campbell,Gallatin,
Grant,Kenton,Pendleton,KY;Brown,Butler,
Clermont,Hamilton,Warren,OH
Macon,Moultrie,IL
Lancaster,Seward,NE
Elkhart,IN; Cass,MI
Johnson,Leavenworth,Miami,Wyandotte,KS;
Cass,Clay,Clinton,Jackson,Lafayette,Platte,
Ray,MO
Saginaw,MI
Christian,Dade,Dallas,Greene,Polk,Webster,MO
Mahoning,Trumbull,OH
Walworth,WI
Logan,OH
Bookings,SD
McDonough,IL

Stratum
CPI-U
9172106

2000 Pop.
Total
9172106

5456428

5456428

2693603

2693603

2945831

2945831

3136198

3136198

2163881
2393317

2163881
2393317

2883225
1160986
2728487

2883225
1160986
2728487

2381926
1839536
1734347
2455863

2381926
1839536
1734347
2455863

1899121
1385014
1757348
1995083
2372713
1977966
2372053

1899121
1385014
1757348
1995083
2372713
1977966
2372053

3

APPENDIX II (Continued)
MIDWEST REGION (Continued)
Area

PSU

PSU Name

Definition (County,State)

Z206

Southwest Kansas,KS

Z208

Southeast South Dakota,SD

Z210
Z212

Holmes,OH
Lincoln-Oneida,WI

Clark,Comanche,Grant,Gray,Haskell,Hodgeman,
Kiowa,Meade,Morton,Ness,Rush,Stevens,KS
Douglas,Hutchinson,Lake,McCook,Miner,Moody,
Sanborn,SD
Holmes,OH
Lincoln,Oneida,WI

Stratum
CPI-U
0

2000 Pop.
Total
2045781

0

1510671

0
0

1857581
2206168

4

APPENDIX II (Continued)
SOUTH REGION
Area

PSU

PSU Name

Definition (County,State)

A311

A312

Washington,DC-MD-VA-WV

A311

A313

Baltimore,MD

A316

Dallas-Fort Worth,TX

A318

Houston-Galveston-Brazoria,TX

A319

Atlanta,GA

A320
A321
X334
X336

Miami-Fort Lauderdale,FL
Tampa-St._Petersburg-Clearwater,FL
Tulsa OK
Roanoke VA

X338

San Antonio TX

X340

Baton Rouge LA

X342

Louisville KY-IN

X344

Greenville SC

District of Columbia,DC;Calvert,Charles,
Frederick,Montgomery,Prince George’s,
Washington,MD;Alexandria city,Arlington,
Clarke,Fairfax,Fairfax city,Falls Church
city,Fauquier,Fredericksburg city,King
George,Loudoun,Manassas Park city,Manassas
city,Prince William,Rappahannock,
Spotsylvania,Stafford,Warren,VA;Berkeley,
Jefferson,WV
Anne Arundel,Baltimore,Baltimore city,
Carroll,Harford,Howard,Queen Anne’s,MD
Collin,Dallas,Delta,Denton,Ellis,Henderson,
Hood,Hunt,Johnson,Kaufman,Parker,Rockwall,
Tarrant,Wise,TX
Austin,Brazoria,Chambers,Fort Bend,
Galveston,Harris,Liberty,Montgomery,
San Jacinto,Waller,TX
Cleburne,AL;Barrow,Bartow,Butts,Carroll,
Cherokee,Clayton,Cobb,Coweta,Dawson,
De Kalb,Douglas,Fayette,Forsyth,Fulton,
Gwinnett,Haralson,Henry,Newton,Paulding,
Pickens,Pike,Rockdale,Spalding,Walton,GA
Broward,Miami Dade,FL
Hernando,Hillsborough,Pasco,Pinellas,FL
Creek,Osage,Pawnee,Rogers,Tulsa,Wagoner,OK
Botetourt,Craig,Franklin,Roanoke,Roanoke
city,Salem city,VA
Atascosa,Bandera,Bexar,Comal,Guadalupe,
Kendall,Medina,Wilson,TX
Ascension,East Baton Rouge,East Feliciana,
Iberville,Livingston,Pointe Coupee,St. Helena
,West Baton Rouge,West Feliciana,LA
Clark,Floyd,Harrison,IN;Bullitt,Jefferson,
Oldham,Spencer,KY
Greenville,SC

Stratum
CPI-U
5027797

2000 Pop.
Total
5027797

2552994

2552994

5275921

5275921

4715407

4715407

4201220

4201220

3876380
2395997
2722702
2829211

3876380
2395997
2722702
2829211

2809510

2809510

2894012

2894012

2633499

2633499

2945842

2945842

5

APPENDIX II (Continued)
SOUTH REGION (Continued)
Area

PSU

PSU Name

Definition (County,State)

X346

Virginia Beach-Norfolk-Newport News
VA

X348
X350
X352
X354

Clarksville-Hopkinsville TN-KY
Ocala FL
Cape Coral-Fort Myers FL
New Orleans LA

X356
X358
X360
X362
X364
X366
X368

Florence SC
Knoxville TN
Tuscaloosa AL
Killeen-Temple-Fort Hood TX
Jacksonville FL
El Paso TX
Birmingham AL

Y314
Y316
Y318
Y320
Y322
Y324
Z314
Z316
Z318
Z320
Z322
Z324

Valdosta GA
Henderson NC
Eagle Pass TX
Picayune MS
Winchester VA-WV
Greenwood MS
Jenkins-Screven,GA
Haywood,NC
Izard-Stone,AR
Cocke-Jefferson,TN
Floyd-Johnson-Pike,KY
Montague,TX

Currituck,Gates,NC;Chesapeake city,
Gloucester,Hampton city,Isle of Wight,
James city,Mathews,Newport News city,
Norfolk city,Poquoson city,Portsmouth
city,Suffolk city,Surry,Virginia Beach
city,Williamsburg city,York,VA
Christian,Trigg,KY;Montgomery,Stewart,TN
Marion,FL
Lee,FL
Jefferson,Orleans,Plaquemines,St. Bernard,
St. Charles,St. John the Baptist,
St. Tammany,LA
Darlington,Florence,SC
Blount,Knox,Loudon,Sevier,Union,TN
Hale,Tuscaloosa,AL
Bell,Coryell,Lampasas,TX
Baker,Clay,Duval,Nassau,St. Johns,FL
El Paso,TX
Bibb,Blount,Chilton,Jefferson,Shelby,
St. Clair,AL
Brooks,Echols,Lanier,Lowndes,GA
Vance,NC
Maverick,TX
Pearl River,MS
Frederick,Winchester city,VA;Hampshire,WV
Carroll,Leflore,MS
Jenkins,Screven,GA
Haywood,NC
Izard,Stone,AR
Cocke,Jefferson,TN
Floyd,Johnson,Pike,KY
Montague,TX

Stratum
CPI-U
2668196

2000 Pop.
Total
2668196

1946709
2262812
2889638
2912761

1946709
2262812
2889638
2912761

2937317
2884164
2171431
2633420
2938088
1489948
2948082

2937317
2884164
2171431
2633420
2938088
1489948
2948082

1965379
2270576
1883169
1982772
2344185
1876665
0
0
0
0
0
0

1965379
2270576
1883169
1982772
2344185
1876665
1869678
1774186
1880013
2468330
2282224
1357912

6

APPENDIX II (Continued)
WEST REGION
Area

PSU

PSU Name

Definition (County,State)

A421
A421

A419
A420
A422

Los Angeles-Orange,CA
Los Angeles Suburbs,CA
San Francisco-Oakland-San Jose,CA

A423

Seattle-Tacoma-Bremerton,WA

A424
A425

San Diego,CA
Portland-Salem,OR-WA

A426
A427
A429
A433

Honolulu,HI
Anchorage,AK
Phoenix-Mesa,AZ
Denver-Boulder-Greeley,CO

X470

Sacramento CA-NV

X472
X474
X476
X478
X480
X482
X484
Y426
Y428
Y430
Y432
Z426
Z428
Z430
Z432

Boise City ID
Las Vegas-Paradise-Sparks NV
Bellingham WA
Fresno CA
Merced CA
Provo-Orem UT
Yuma AZ
Newport OR
Bend OR
El Centro CA
Prescott AZ
Tuolumne,CA
Jefferson-Wheeler,OR
Grand-Jackson,CO
Park,MT

Los Angeles,Orange,CA
Riverside,San Bernardino,Ventura,CA
Alameda,Contra Costa,Marin,Napa,
San Francisco,San Mateo,Santa Clara,
Santa Cruz,Solano,Sonoma,CA
Island,King,Kitsap,Pierce,Snohomish,
Thurston,WA
San Diego,CA
Clackamas,Columbia,Marion,Multnomah,Polk,
Washington,Yamhill,OR;Clark,Skamania,WA
Honolulu,HI
Anchorage, Matanuska-Susitna,AK
Maricopa,Pinal,AZ
Adams,Arapahoe,Boulder,Clear Creek,
Denver,Douglas,Elbert,Gilpin,Jefferson,
Park,Weld,CO
El Dorado,Placer,Sacramento,Yolo,CA;
Douglas,NV
Ada,Boise,Gem,ID
Clark,Nye,NV
Whatcom,WA
Fresno,CA
Merced,CA
Utah,UT
Yuma,AZ
Lincoln,OR
Deschutes,OR
Imperial,CA
Yavapai,AZ
Tuolumne,CA
Jefferson,Wheeler,OR
Grand,Jackson,CO
Park,MT

Stratum
CPI-U
12365627
4008018
7039362

2000 Pop.
Total
12365627
4008018
7039362

3554760

3554760

2813833
2275095

2813833
2275095

876156
319605
3251876
2629980

876156
319605
3251876
2629980

2604885

2604885

1688864
2254594
1686680
2477516
1759160
1739315
1733421
1276861
1167215
1438782
1391696
0
0
0
0

1688864
2254594
1686680
2477516
1759160
1739315
1733421
1276861
1167215
1438782
1391696
656279
570223
787911
830218

7

APPENDIX III

Z102
Z104

Table 1
The Population Represented by Z PSUs in the CE Sample
Expected Number
Population
Percent
of Interviewed
PSU
Represented
of Total
Households
Somerset, ME
894,407
3.7%
15
Allegany-Wyoming, NY
1,344,960
5.5%
22

Z206
Z208
Z210
Z212

Southwest Kansas,KS
Southeast South Dakota,SD
Holmes, OH
Lincoln-Oneida, WI

2,045,781
1,510,671
1,857,581
2,206,168

8.4%
6.2%
7.6%
9.1%

34
25
30
36

Z314
Z316
Z318
Z320
Z322
Z324

Jenkins-Screven, GA
Haywood, NC
Izard-Stone, AR
Cocke-Jefferson, TN
Floyd-Johnson-Pike, KY
Montague, TX

1,869,678
1,774,186
1,880,013
2,468,330
2,282,224
1,357,912

7.7%
7.3%
7.7%
10.1%
9.4%
5.6%

31
29
31
41
38
22

Z426
Z428
Z430
Z432

Tuolumne, CA
Jefferson-Wheeler, OR
Grand-Jackson, CO
Park, MT

656,279
570,223
787,911
830,218

2.7%
2.3%
3.2%
3.4%

11
9
13
14

100.0%

400

Total

24,336,542

8

APPENDIX III (Continued)

X102
X104
X106
X108
Total

Table 2
The Population Represented by X PSUs in the CE Sample
Population Percent of the RegionPSU
Represented
Size Class Total
Reading, PA
3,583,761
32.9%
Syracuse, NY
2,528,670
23.2%
Providence-Warwick, RI
2,079,175
19.1%
Sharon-Hermitage, PA
2,700,148
24.8%
10,891,754
100.0%

X210
X212
X214
X216
X218
X220
X222
X224
X226
X228
X230
X232
Total

Madison, WI
Milwaukee, WI
South Bend-Mishawaka, IN
Rochester, MN
Cincinnati, OH
Decatur, IL
Lincoln, NE
Elkhart-Goshen, IN
Kansas City, MO
Saginaw, MI
Springfield, MO
Youngstown-Warren, OH

2,163,881
2,393,317
2,883,225
1,160,986
2,728,487
2,381,926
1,839,536
1,734,347
2,455,863
1,899,121
1,385,014
1,757,348
24,783,051

8.7%
9.7%
11.6%
4.7%
11.0%
9.6%
7.4%
7.0%
9.9%
7.7%
5.6%
7.1%
100.0%

X334
X336
X338
X340
X342
X344
X346
X348
X350
X352
X354
X356
X358
X360
X362
X364
X366
X368
Total

Tulsa, OK
Roanoke, VA
San Antonio, TX
Baton Rouge, LA
Louisville, KY-IN
Greenville, SC
Virginia Beach-Norfolk-Newport News, VA
Clarksville-Hopkinsville, TN-KY
Ocala, FL
Cape Coral-Fort Myers, FL
New Orleans, LA
Florence, SC
Knoxville, TN
Tuscaloosa, AL
Killeen-Temple-Fort Hood, TX
Jacksonville, FL
El Paso, TX
Birmingham, AL

2,722,702
2,829,211
2,809,510
2,894,012
2,633,499
2,945,842
2,668,196
1,946,709
2,262,812
2,889,638
2,912,761
2,937,317
2,884,164
2,171,431
2,633,420
2,938,088
1,489,948
2,948,082
47,517,342

5.7%
6.1%
5.9%
6.1%
5.5%
6.2%
5.6%
4.1%
4.8%
6.1%
6.1%
6.2%
6.1%
4.6%
5.5%
6.2%
3.1%
6.2%
100.0%

X470
X472
X474
X476
X478
X480
X482
X484
Total

Sacramento, CA-NV
Boise City, ID
Las Vegas-Paradise-Sparks, NV
Bellingham, WA
Fresno, CA
Merced, CA
Provo-Orem, UT
Yuma, AZ

2,604,885
1,688,864
2,254,594
1,686,680
2,477,516
1,759,160
1,739,315
1,733,421
15,944,435

16.3%
10.6%
14.1%
10.6%
15.5%
11.0%
10.9%
10.9%
100.0%

9

APPENDIX III (Continued)

Y102
Y104
Total

Table 3
The Population Represented by Y PSUs in the CE Sample
Population Percent of the RegionPSU
Represented
Size Class Total
Augusta-Waterville, ME
1,360,710
46.2%
Ithaca, NY
1,582,049
53.8%
2,942,759
100.0%

Y206
Y208
Y210
Y212
Total

Whitewater, MI
Bellefontaine, OH
Brookings, SD
Macomb, IL

Y314
Y316
Y318
Y320
Y322
Y324
Total

Valdosta, GA
Henderson, NC
Eagle Pass, TX
Picayune, MS
Winchester, VA-WV
Greenwood, MS

Y426
Y428
Y430
Y432
Total

Newport, OR
Bend, OR
El Centro, CA
Prescott, AZ

1,995,083
2,372,713
1,977,966
2,372,053
8,717,815

22.9%
27.2%
22.7%
27.2%
100.0%

1,965,379
2,270,576
1,883,169
1,982,772
2,344,185
1,876,665
12,322,746

15.9%
18.4%
15.3%
16.1%
19.0%
15.2%
100.0%

1,276,861
1,167,215
1,438,782
1,391,696
5,274,554

24.2%
22.1%
27.3%
26.4%
100.0%

10

APPENDIX IV
RECORD LAYOUT FOR BLS' SELECTED PSUs
FOR THE CPI and CE-ONLY PSU DEFINITION FILES
(census2000cpi.sdf and census2000ce.sdf)
1. Region code (1 digit) - 1/1
2. Pad - 2/1
3. FIPS State code (2 digits) - 3/2
4. Pad - 5/1
5. FIPS County code (3 digits) - 6/3
6. Pad - 9/1
17. 2000 Stratification PSU number (4 digits) 10/4
18. Pad - 14/1
25. SR/NSR Indicator (1 digit): 1=SR, 2=NSR - 15/1
26. Pad - 16/1
43. Stratum total population (8 digits) - 17/8
44. Pad - 25/1
27. PSU Unconditional Probability of Selection (8 decimal
places) - 26/10
The numbers before and after the slash are starting position
of field/length of field.
Note: The data file (census2000cpi.sdf) contains all of the
CPI PSUs listed as A, X, and Y PSUs in Appendix II. The
data file (census2000ce.sdf) of CE Only PSUs contains the Z
PSUs listed in Appendix II. They are not to be used for CPI
Permit New Construction or TPOPS.

11