2014 Redistricting Data Program Phase 4

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rdp phase 4_participant guidelines sld-cd_2014_updated

2014 Redistricting Data Program Phase 4

OMB: 0607-0795

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2010 Census Redistricting Data Program, Phase 4

Congressional & State Legislative Districts

Participant Instructions


States will use the Public Law 94-171 data delivered to legislative leadership and Governor’s offices during March 2014 to prepare materials to be submitted to the Census Bureau. Once we receive these materials and get the information inserted into our geographic database, you will receive verification materials to certify that we have inserted your information correctly. Following, are instructions for providing this information to us.


Submit the Following Materials


  1. A block equivalency file (BEF) representing Congressional Districts (CDs) and State Legislative Districts (SLDs) by whole 2010 Census blocks


    • A separate file is required for each entity type; one for CDs and one for SLDs.

    • Include in the name of the file, the state name or abbreviation and either CD113 or SLD. For example; CD113_MD.txt.

    • All files must be in comma delimited ASCII format, zero filled, and formatted as follows.


NOTE: These files should contain a record for every 2010 census tabulation block in your state, including all water blocks. If water blocks are not assigned they will be given a “ZZ” code for unassigned congressional districts and a “ZZZ” code for unassigned state legislative districts.


State Legislative District Files


Field Name Length


State FIPS code………………………………………………………..2

County FIPS code……………………………………………….......3

Census Tract…………………………………………………………...6

Census Block…………………………………………………...........4

Senate District (upper chamber) code (SLDU)………...3

House District (lower chamber) code (SLDL)……………3


Example: 09,013,020102,3005,011,003

Congressional District Files


Field Name Length


State FIPS code………………………………………………………..2

County FIPS code……………………………………………….......3

Census Tract…………………………………………………………...6

Census Block…………………………………………………...........4

Congressional District code…………………………..…………2


Example: 09,013,020192,3005,01


  1. If your state CD and SLD boundaries DO NOT follow 2010 Census blocks, we require more information. Please submit:


    • A map, shape file, jpeg, tiff, or PDF depicting the boundary where it divides a Census block.

    • A listing of all 2010 Census blocks that include more than a single CD or SLD (“split blocks”), indicating the single CD or SLD that the state wishes to assign to that block for 2010 Census data tabulation purposes. The Census Bureau cannot tabulate 2010 Census data for split blocks. For tabulation purposes, the whole block must be assigned to only one CD, SLDL and SLDU.

Note: The CD or SLD assignment for the block in the BEF should match the assignment in this listing.


  1. Population totals – To assist us in verifying the accuracy of the boundaries that we have inserted into our geographic database, please provide:


    • A list of the official 2010 Census population totals identified by your state for each CD, SLDL and SLDU.

    • A list of the counties in your state that are split by a CD, SLDL or SLDU boundary and the 2010 Census population associated with each in each county.


  1. SLD names – The state also may submit state legislative district names at this time. We request two separate files for this purpose, one for house (SLDL) names and one for senate (SLDU) names. All files should be in comma delimited ASCII format. Include in the name of the file the state name or abbreviation and either “house” or “senate”. For example: “VT_senate_names”. The format of these files is as follows:

Field name Length

State code…………………….………………2

SLDU or SLDL code……………………….3

SLDU or SLDL name………………..….60 (maximum)


Example: 50,FRA,Franklin State Senate District


  1. Relationships between SLD and CD boundaries and other geographic boundaries


As we update our databases with your state’s congressional, senate and house districts, we will discover many situations where other boundaries have changed since the 2010 Census. These changes will not be reflected in the 2010 Census data we tabulate for the new plans that you submit under this project.


However, as we move forward throughout the decade, we will need to know how to manage any permanent relationships that the CDs and SLDs have to other governmental unit boundaries such as incorporated places and county subdivisions. Providing us with this information would be very helpful to us in maintaining your boundaries.


If your CDs and/or SLDs have relationships to other governmental boundaries, please give us this information by going to our web site, www.census.gov/rdo, and filling out the document “Update and Maintenance of Congressional and State Legislative District Boundaries Coincident to Other Geographic Entities”.


  1. State legislation documenting your post 2010 Census boundaries.


  1. Check List (Enclosed)


Submitting Materials


To submit this information, send an email with the appropriate listings and files enclosed (and zipped as needed) to this email address: RDO@census.gov. The RDO will acknowledge receipt via email.


Participant Burden Information


The Census Bureau estimates that it will take approximately 50 hours to complete preparation of materials for the Redistricting Data Program Phase 4. This includes the time needed to read and answer all questions completely for both the Annotation and Verification phases of Phase 4. Please send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to: Paperwork Project 0607-0795, 4600 Silver Hill Road, Room 3K138, Washington, DC 20233, or you may e-mail comments to paperwork@census.gov; use “Paperwork Project 0607-0795” as the subject. Please include a copy of your message addressed to RDO@census.gov. Under the Paperwork Reduction Act, the Census Bureau cannot ask you to respond to a collection of information unless it displays a currently valid Office of Management and Budget (OMB) Control Number. The OMB Control Number for this collection is 0607-0795, and this Control Number expires on July 31, 2015.

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