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Congressional Districts

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The tabs below represent the unique congressional sessions as collected by the U.S. Census Bureau through the Redistricting Data Program. Each tab contains information specific to that session's boundary collection along with other relevant products generated in support of any changes. Typically, new products are generated only when changes to congressional districts are reported between sessions. Any changes to congressional plans are submitted to the Census Bureau by non-partisan state liaisons, identified by the governor and legislative leadership of each state at the beginning of each decade's Redistricting Data Program. Once these plans are processed and inserted into the MAF/TIGER database, the Census Bureau generates verification materials for each state to review and certify as accurate. Any reported changes to the verification materials were incorporated into these final products.

118th Congress
  • 118th Congress
  • 117th Congress
  • 116th Congress
  • 115th Congress
  • 114th Congress
  • 113th Congress
  • 110th Congress
118th Congress

Block Equivalency File

These Block Equivalency Files (BEFs) are the whole 2020 census tabulation block representations of the plans as submitted by the states to the U.S. Census Bureau. In instances where plans included split blocks, the Census Bureau requested that the state assign the whole block to one district for the purpose of tabulating data. The .ZIP file contains a national block equivalency file and individual state files for those states who reported changes during this collection cycle. The fields in these files should be imported as text to preserve leading zeros.

Split block listing

If the boundary of a congressional district splits a 2020 Census tabulation block, the Census Bureau's maps and TIGER/Line shapefiles depict the correct location of the boundary. For data tabulation purposes, however, that census block is allocated in its entirety to the congressional district specified to the U.S. Census Bureau by the state. Only one state, Colorado, split blocks for their 118th congressional district plan. Colorado split one block, 080010096072000, between Congressional District 07 and Congressional District 08. The data for that census block will be tabulated to congressional District 08.

Summary File - Planned for Release in August 2023

The 118th Congressional District Summary File (CD118) will contain the data compiled from the questions asked of all people and about every housing unit in the 2020 Census. Population items will include age, sex, race, Hispanic or Latino origin, household type, family type, relationship to householder, group quarters population, housing occupancy and housing tenure (whether a housing unit is owner-occupied or renter-occupied). The file will contain subject content identical to that shown in the 2020 Census Demographic and Housing Characteristics File (DHC), which is planned for release in May 2023, but only include geographies related to the 118th Congressional and the 2022 state legislative districts.


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