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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

Following the post-2020 Census redistricting process, the Census Bureau collected congressional district boundaries from all states. These were the boundaries in effect for the 2022 election cycle.

2020 Apportionment Results Map

This map shows the changes to the number of congressional seats for each state between apportionment based on the 2010 Census and apportionment based on the 2020 Census.

Data Products

American Community Survey Data Profiles

These data profiles contain social, economic, housing and demographic statistics for the 118th Congressional Districts from the 2021 American Community Survey (ACS) 1-year estimates. The four data profiles are available through a web-based lookup tool on the ACS website and on the Census Bureau's FTP site. The My Congressional District app has also been updated for the 118th Congress.

118th Congressional District Summary File - Planned Release in August 2023

The 118th Congressional District Summary File 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. 

Geographic Products

Block Equivalency Files

These Block Equivalency Files (BEFs) are the whole 2020 Census tabulation block representations of the 118th Congressional District plans as submitted by the states to the U.S. Census Bureau. The .ZIP file contains a national block equivalency file and individual state files for all states, the District of Columbia, and Puerto Rico. The fields in these files should be imported as text to preserve leading zeros.

In instances where plans included split 2020 Census tabulation blocks, the Census Bureau requested that the state assign the whole block to one district for the purpose of tabulating data. These block equivalency files contain the whole block tabulation plan. The Census Bureau's maps and TIGER/Line shapefiles depict the correct location of the boundary (splits tabulation blocks), except for the January 2023 TIGER/Line shapefile release which does not depict the block splits.  A listing of those blocks split in the states' official plans is also provided.

Only one state--Colorado--split blocks in 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.

NOTE: On December 14, 2022, Arkansas officially notified the Census Bureau that there was an error in the 118th Congressional District boundaries they provided for their state. We updated and reposted the 118th Congressional District BEFs with Arkansas’s corrections on December 16, 2022. Please redownload these files if you plan to use Arkansas’s 118th Congressional District file or the national 118th Congressional District file. 

TIGER/Line Shapefiles and Geodatabases

These TIGER/Line products include the 118th Congressional Districts, the 2022 State Legislative Districts, and the supporting 2020 Census geography. They also contain the urban areas defined as of December 29, 2022 and the new county-equivalent planning regions in Connecticut. The congressional and state legislative district boundaries are the boundaries as submitted by the state liaisons in Phase 4 of the Redistricting Data Program.

If the boundary of a congressional or state legislative district splits a 2020 Census tabulation block, the Census Bureau's maps and TIGER/Line products will typically depict the correct location of the boundary. However, for the TIGER/Line products released in January 2023 only, the shapefiles will show the split block allocated in its entirety to the congressional district specified to the U.S. Census Bureau by the state.

The shapefiles for the 118th Congressional and 2022 State Legislative Districts are identified by their abbreviation within the file name: "cd118" for the 118th congressional districts; "sldu" for the state legislative districts - upper house; and "sldl" for the state legislative districts - lower house.


The congressional district map suite includes three map types (national, state-based, and congressional district-based) that depict the congressional districts in effect for the 118th Congress of the United States (January 2023-2025).

Congressional District Relationship Files

The 118th Congressional District Relationship Files provide simple relationships between the 118th Congressional Districts and other 2020 Census tabulation geography including American Indian areas, counties, county subdivisions, census tracts, places, school districts, urban/rural population and land area, and ZIP Code Tabulation Areas.

Page Last Revised - February 22, 2023
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