Congressional district boundaries, enacted November 4, 2021, effective beginning with the elections in 2022 for the 118th U.S. Congress. The districts will remain in effect for the 118th-122th U.S. Congress, 2023-2032. Created by the Legislative Services Agency using Code of Iowa Chapter 41, using 2010 Census geographies and populations. For a comprehensive overview of Iowa's redistricting process, see the "Legislative Guide to Redistricting in Iowa": https://www.legis.iowa.gov/DOCS/Central/Guides/redist.pdf

This data represents the 2021 Adopted House districts from SB 882

This layer represents the Arkansas State House of Representatives district boundaries adopted by the Arkansas Board of Apportionment on July 29, 2011. The Board of Apportionment, members were Governor Mike Beebe, Secretary of State Mark Martin and Attorney General Dustin McDaniel. The Board's composition and purpose were created in 1936 by Amendment 23 to the Arkansas Constitution. The Board is responsible for redrawing 100 House and 35 Senate Districts so that each district meets various legal criteria, including each district being about the same size in population. This redistricting is required by law once every 10 years after the Federal Census. The District boundaries represent the legal boundary of each district. The boundaries were extracted from census block, voting district (VTD) or county boundaries in the 2010 Census files. A public record of the boundary plan is on file at the Elections Division of the Arkansas Secretary of State Office.

The 83rd Legislature, 1st Called Session, enacted S.B. 3 (PLAN H358), the plan used to elect members to the Texas House from 2014-2018. The U.S. District Court for the Western District of Texas ordered changes to districts 90, 97 and 99 in Tarrant County for the 2020 elections. The resulting statewide plan (PLAN H414) is effective January 2021. All data is based on the 2010 census. For more information, visit: https://redistricting.capitol.texas.gov/Current-districts#st-house-section.

This map shows the 2012 boundary of Legislative District 46, applying for the District's Senator and three House of Delegates representatives.

The 2024 cartographic boundary KMLs are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. Nebraska has a unicameral legislature and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation; there are no data by SLDL for either Nebraska or the District of Columbia. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDs to cover all of the state or state equivalent area. In these areas with no SLDs defined, the code "ZZZ" has been assigned, which is treated as a single SLD for purposes of data presentation. The generarlized boundaries in this file are based on the most recent state legislative district boundaries collected by the Census Bureau for the 2024 election year and provided by state-level participants through the RDP.

The 2024 cartographic boundary KMLs are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. Congressional districts are the 435 areas from which people are elected to the U.S. House of Representatives. After the apportionment of congressional seats among the states based on census population counts, each state is responsible for establishing congressional districts for the purpose of electing representatives. Each congressional district is to be as equal in population to all other congressional districts in a state as practicable. The 119th Congress is seated from January 2025 through December 2026. In Connecticut, Illinois, and New Hampshire, the Redistricting Data Program (RDP) participant did not define the CDs to cover all of the state or state equivalent area. In these areas with no CDs defined, the code "ZZ" has been assigned, which is treated as a single CD for purposes of data presentation. The cartographic boundary files for the District of Columbia, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands) each contain a single record for the non-voting delegate district in these areas. The generalzied boundaries of all other congressional districts are based on information provided to the Census Bureau by the states by May 31, 2024.

The 2024 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. Nebraska has a unicameral legislature and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation; there are no data by SLDL for either Nebraska or the District of Columbia. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDs to cover all of the state or state equivalent area. In these areas with no SLDs defined, the code "ZZZ" has been assigned, which is treated as a single SLD for purposes of data presentation. The generarlized boundaries in this file are based on the most recent state legislative district boundaries collected by the Census Bureau for the 2024 election year and provided by state-level participants through the RDP.

PLAN H309 was effective 2012-2013. In February 2012, the U.S. District Court for the Western District of Texas, San Antonio Division, ordered a new interim state house plan (PLANH309) for the 2012 elections. PLAN H309 was replaced in June 2013 by PLAN H358. See https://redistricting.capitol.texas.gov/Current-districts#st-house-section for additional information.

Adminstrative districts as used by the Iowa DNR Law Enforcement Bureau.