United States Congressional Districts

From the U.S. Bureau of Transportation Statistics National Transportation Atlas Database: The 119th Congressional Districts dataset reflects boundaries from January 3rd, 2025 from the United States Census Bureau (USCB), and the attributes are updated every Sunday from the United States House of Representatives and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). Information for each member of Congress is appended to the Census Congressional District shapefile using information from the Office of the Clerk, U.S. House of Representatives' website https://clerk.house.gov/xml/lists/MemberData.xml and its corresponding XML file. Congressional districts are the 435 areas from which people are elected to the U.S. House of Representatives. This dataset also includes 9 geographies for non-voting at large delegate districts, resident commissioner districts, and congressional districts that are not defined. 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 3, 2025 through January 3, 2027. 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 TIGER/Line shapefiles 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.本数据集源自美国运输统计局（U.S. Bureau of Transportation Statistics）国家交通地图集数据库：第119届国会选区数据集采用美国人口普查局（United States Census Bureau, USCB）2025年1月3日的选区边界数据，其属性信息每周日由美国众议院更新，属于美国运输部（U.S. Department of Transportation, USDOT）/美国运输统计局（Bureau of Transportation Statistics, BTS）国家交通地图集数据库（National Transportation Atlas Database, NTAD）的组成部分。 数据集依托美国众议院书记员办公室官网https://clerk.house.gov/xml/lists/MemberData.xml及其对应XML文件中的信息，将每位国会议员的相关信息追加至人口普查局的国会选区形状文件（shapefile）中。国会选区共计435个，是民众选举美国众议院议员的选区范围。本数据集还包含9个非投票的全席代表选区、常驻专员选区以及未定义的国会选区地理单元。 根据人口普查人口统计结果完成国会席位在各州的分配后，各州负责划定本州的国会选区以开展议员选举工作。在实际操作中，各州的每个国会选区的人口数应尽可能与本州内其他选区保持一致。第119届美国国会的任期为2025年1月3日至2027年1月3日。 在康涅狄格州、伊利诺伊州及新罕布什尔州，选区重划数据项目（Redistricting Data Program, RDP）的参与方未划定覆盖全州或州级等效区域的国会选区。针对此类未定义国会选区的区域，已分配代码“ZZ”，在数据展示时将其视为单个国会选区进行处理。 哥伦比亚特区、波多黎各以及岛屿地区（美属萨摩亚、关岛、北马里亚纳群岛联邦及美属维尔京群岛）的TIGER/Line形状文件（shapefile），均为对应地区的非投票代表选区创建了单条记录。