Required by law, the Redistricting Data Program provides states the opportunity to specify the small geographic areas for which they wish to receive decennial population totals for the purpose of reapportionment and redistricting.
Under the provisions of Title 13, Section 141(c) of the United States Code (U.S.C.), the Secretary of Commerce (Secretary) is required to provide the ‘‘officers or public bodies having initial responsibility for the legislative apportionment or districting of each state ...’’ with the opportunity to specify geographic areas (e.g., blocks, voting districts) for which they wish to receive decennial census population counts for the purpose of reapportionment or redistricting. By April 1 of the year following the decennial census, the Secretary is required to furnish the state officials or their designees with population counts for American Indian areas, counties, cities, census blocks, and state-specified congressional, legislative, and voting districts.
These tabs provide information, by decennial, about the materials and processes for participation by the state appointed non-partisan liaisons to the program.
The 2010 Census Redistricting Data Program provided states the opportunity to delineate voting and state legislative districts and to suggest census block boundaries for use in the 2010 Census redistricting data tabulations (Public Law 94-171 Redistricting Data File). The program also ensured continued dialogue with the states in regard to 2010 Census planning, thereby allowing states ample time for planning, response, and participation.
Phase 1 is the collection of State Legislative District (SLD) boundaries. This was the first effort post-Census 2000 to update SLD boundaries. This phase included a verification stage as well as a data tabulation for legislative districts based on Census 2000 data.
Phase 2 of the 2010 Census Redistricting Data Program involves the collection of voting district boundaries, block boundary suggestions, and any updates to state legislative districts since they were collected in Phase 1. States submitted block boundary suggestions and voting district boundaries are included in the 2010 Census geography. A verification phase is included for all updates in this phase of the program.
Questions regarding the Phase 2 Guidelines and MTPS should be directed to the Redistricting Data Office at (301) 763-4039.
Phase 3 involved the delivery of the geographic products and P.L. 94-171 redistricting data tabulations to the official recipients and designated liaisons. Geographic products delivery preceded the P.L. 94-171 redistricting data tabulations. The data tabulations, by law, were delivered prior to April 1, 2011, one year following Census Day.
Phase 4 involved the collection of State Legislative District and Congressional plans drawn using the Phase 3 materials, production of both geographic and data products required for delivery to the USPS/DOJ, and production of materials for Congress and Congressional District data summaries and maps.
Phase 5 of the 2010 Census Redistricting Data Program involved a review by the states of the successes and challenges of the Census Bureau to meet the requirements of Public Law 94-171. This phase also involved an evaulation of the current state of redistricting and how to meet those needs. Production of the final report detailing those findings with the view of the states expressed for the 2020 Census Redistricting Data Program.