California US Congressional Districts Map 2020

Final approved map by the 2020 California Citizens Redistricting Commission for California's United States Congressional Districts; the authoritative and official delineations of California's United States Congressional Districts drawn during the 2020 redistricting cycle. The Citizens Redistricting Commission for the State of California has created statewide district maps for the State Assembly, State Senate, State Board of Equalization, and United States Congress in accordance, with the provisions of Article XXI of the California Constitution. The Commission has approved the final maps and certified them to the Secretary of State. Line drawing criteria included population equality as required by the U.S. Constitution, the Federal Voting Rights Act, geographic contiguity, geographic integrity, geographic compactness, and nesting. Geography was defined by U.S. Census Block geometry. Each of the 52 Congressional districts apportioned to California have an ideal population of 760,066, and the Commission adhered to federal constitutional mandates by requiring a district population deviation of no more than +/- one person. These districts also posed some of the Commission’s biggest challenges, and, because of strict population equality requirements, resulted in many more splits of counties, cities, neighborhoods, and communities of interest compared to State Assembly or Senate plans. This layer was not published by the Assembly or Senate Demographics. Congressional District Boundaries from Assembly Bill 604 and certified by the California voters under Proposition 50. These districts will take effect in January 2027 and will remain effect for sitting Congressmembers through 2032. Current district boundaries and membership, maintained by USDOT.本数据集为2020年加利福尼亚州公民重划委员会（2020 California Citizens Redistricting Commission）最终获批的加州联邦国会选区地图，是2020年选区重划周期内划定的加州联邦国会选区权威官方界址。加利福尼亚州公民重划委员会依据《加利福尼亚州宪法》第二十一条之规定，为州议会、州参议院、加州均等委员会（State Board of Equalization）及美国国会划定了全州范围的选区地图。该委员会已完成最终地图的审批程序，并已将其认证提交至州务卿办公室。本次划界的标准包括符合美国宪法要求的人口均等原则、《联邦选举权法案》，以及地理连续性、地理完整性、地理紧凑性与嵌套规则。地理边界以美国人口普查区块（U.S. Census Block）的几何形态为基准划定。分配给加州的52个国会选区的理想人口规模为760066人，委员会严格遵循联邦宪法要求，将单个选区的人口偏差控制在±1人以内。此类选区也是该委员会面临的最棘手挑战之一，由于严格的人口均等要求，相较于州议会或州参议院的选区划界方案，本次划界拆分了更多的郡、城市、社区片区及利益共同体。本图层未由州议会或参议院人口统计部门发布。依据《议会法案第604号（Assembly Bill 604）》划定、并经加州选民通过第50号提案（Proposition 50）认证的国会选区边界，将于2027年1月正式生效，并适用于现任议员至2032年任期结束。当前的选区边界及议员信息由美国交通部（USDOT）维护。