Congressional Districts - USA Sample

**Overview**
Congressional Districts depicts the physical extent and demographic profile of each district of the U.S. Congress. The dataset includes population estimates, contact information, and party affiliation for each current congressional representative at the time, along with previous congressional districts for historical comparison.

This sample data set covers the San Francisco, CA area. This represents a subset of the full product’s geographic extent. The full commercial offering features geographic coverage of the entire United States. Contact [e-mail] for more information on licensing the product.
**Use cases**
**Location Planning**
Enhanced accuracy - More detailed boundaries of each district created using data sourced from individual states
**Audience Segmentation**
More context - Incorporates demographics estimates and projections from the U.S. Census
**Contact Data Enrichment**
More details - Current-year contact information for each congressional representative, including the name, address, phone number, and party affiliation

**Product details**
- A Congressional district is a division of a state that is entitled to elect one member to the House of Representatives. There are currently 435 voting members of Congress representing all 50 states. American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the US Virgin Islands, and the District of Columbia have one non-voting member each. Congressional districts with non-voting members are numbered 98 (e.g. DC-98).
- States with relatively small populations (Alaska, Delaware, Montana, North Dakota, South Dakota, Vermont, and Wyoming) have only a single district. Congressional districts in these single-district states are numbered 00 (e.g. VT-00).
- Congressional district boundaries are redrawn after each decennial census. Data is current updated to reflect the latest information for the 119th Congress. Smaller adjustments to district boundaries may occur between major redistricting. With the exception of mid-decade redistricting, Congressional district boundaries drawn as part of the 2020 redistricting cycle will remain in effect until the next round of redistricting, scheduled to follow the 2030 census.
- Shorelined and unshorelined versions of the boundary data is included.

**Additional Insights**
https://help.precisely.com/r/t/1014164838/2023-12-31/Congressional-Districts/pub/Latest/en-US/Congressional-Districts-Product-Guide/Getting-started

https://www.precisely.com/data-guide/products/congressional-districts

**概述**
国会选区（Congressional Districts）描述了美国国会每个选区的地理范围和人口统计特征。该数据集包含当时每位现任国会议员的人口估计数、联系方式及党派归属，同时提供历史国会选区数据以供对比分析。

本样本数据集覆盖加利福尼亚州旧金山地区，是完整产品地理范围的子集。完整商业产品的地理覆盖范围为全美国。如需了解产品授权的更多信息，请联系[e-mail]。

**用例**
**位置规划**
更高准确性——利用各州数据源创建的更详细的每个选区边界

**受众细分**
更丰富背景信息——整合了美国人口普查的人口估计与预测数据

**联系方式数据增强**
更详细信息——本年度每位国会议员的联系方式，包括姓名、地址、电话号码及党派归属

**产品详情**
- 国会选区是州内的一个区划，有权选举一名众议院（House of Representatives）议员。目前美国国会共有435名有投票权的议员，代表所有50个州。美属萨摩亚（American Samoa）、关岛（Guam）、北马里亚纳群岛（Northern Mariana Islands）、波多黎各（Puerto Rico）、美属维尔京群岛（US Virgin Islands）及哥伦比亚特区（District of Columbia）各有一名无投票权的议员。这些无投票权议员所在的国会选区编号为98（例如DC-98）。
- 人口相对较少的州（阿拉斯加、特拉华、蒙大拿、北达科他、南达科他、佛蒙特及怀俄明）仅设一个选区，编号为00（例如VT-00）。
- 国会选区边界每十年人口普查（decennial census）后重新划分。数据当前已更新至第119届国会的最新信息。在主要重划周期之间，选区边界可能会进行小幅调整。除十年中期重划外，2020年重划周期确定的国会选区边界将一直有效到下一轮重划（计划于2030年人口普查后进行）。
- 包含带海岸线和不带海岸线的边界数据版本。

**额外见解**
https://help.precisely.com/r/t/1014164838/2023-12-31/Congressional-Districts/pub/Latest/en-US/Congressional-Districts-Product-Guide/Getting-started

https://www.precisely.com/data-guide/products/congressional-districts