遇见数据集

2020 Census Blocks

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ArcGIS Hub2026-02-09 更新2026-08-04 收录
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Blocks are typically bounded by streets, roads or creeks. In cities, a census block may correspond to a city block, but in rural areas where there are fewer roads, blocks may be limited by other features. The Census Bureau established blocks covering the entire nation for the first time in 1990. There are less number of Census Blocks within Los Angeles County in 2020 Census TIGER/Line Shapefiles, compared in 2010. Updated: 1. June 2023: This update includes 2022 November Santa Clarita City annexation and the addition of "Kinneloa Mesa" community (was a part of unincorporated East Pasadena). Added new data fields FIP_CURRENT to CITYCOMM_CURRENT to reflect new/updated city and communities. Updated city/community names and FIP codes of census blocks that are in 2022 November Santa Clarita City annexation and new Kinneloa Mesa community (look for FIP_Current, City_Current, Comm_Current field values) 2. February 2023: Updated few Census Block CSA values based on Demographic Consultant inquiry/suggestions 3. April 2022: Updated Census Block data attribute values based on Supervisorial District 2021, Service Planning Area 2022, Health District 2022 and ZIP Code Tabulation Area 2020 Created: March 2021 How This Data is Created? This census geographic file was downloaded from Census Bureau website: https://www2.census.gov/geo/tiger/TIGER2020PL/STATE/06_CALIFORNIA/06037/ on February 2021 and customized for LA County. New data fields are added in the census blocks 2020 data and populated with city/community names, LA County FIPS, 2021 Supervisorial Districts, 2020 Census Zip Code Tabulation Area (ZCTA) and some administrative boundary information such as 2022 Health Districts and 2022 Service Planning Areas (SPS) are also added. "Housing20" field value and "Pop20" field value is populated with PL 94-171 Redistricting Data Summary File: Decennial Census P.L. 94-171 Redistricting Data Summary Files. Similarly, "Feat_Type" field is added and populated with water, ocean and land values. Five new data fields (FIP_CURRENT to CITYCOMM_CURRENT) are added in June 2023 updates to accommodate 2022 Santa Clarita city annexation. City/community names and FIP codes of census blocks affected by 2022 November Santa Clarita City annexation are assigned based on the location of block centroids. In June 2023 update, total of 36 blocks assigned to the City of Santa Clarita that were in Unincorporated Valencia and Castaic. Note: This data includes 3 NM ocean (FEAT_TYPE field). However, user can use a definition query to remove those. Data Fields: 1. STATE (STATEFP20): State FIP, "06" for California, 2. COUNTY (COUNTYFP20): County FIP "037" for Los Angeles County, 3. CT20: (TRACTCE20): 6-digit census tract number, 4. BG20: 7-digit block group number, 5. CB20 (BLOCKCE20): 4-digit census block number, 6. CTCB20: Combination of CT20 and CB20, 7. FEAT_TYPE: Land use types such as water bodies, ocean (3 NM ocean) or land, 8. FIP20: Los Angeles County FIP code, 9. BGFIP20: Combination of BG20 and FIP20, 10. CITY: Incorporated city name, 11. COMM: Unincorporated area community name and LA City neighborhood, also known as "CSA", 12. CITYCOMM: City/Community name label, 13. ZCTA20: Parcel specific zip codes, 14. HD12: 2012 Health District number, 15. HD_NAME: Health District name, 16. SPA22: 2022 Service Planning Area number, 17. SPA_NAME: Service Planning Area name, 18. SUP21: 2021 Supervisorial District number, 19. SUP_LABEL: Supervisorial District label, 20. POP20: 2020 Population (PL 94-171 Redistricting Data Summary File - Total Population), 21. HOUSING20: 2020 housing (PL 94-171 Redistricting Data Summary File - Total Housing), 22. FIP_CURRENT: Los Angeles County 2023 FIP code, as of June 2023, 23. BG20FIP_CURRENT: Combination of BG20 and 2023 FIP, as of June 2023, 24. CITY_CURRENT: 2023 Incorporated city name, as of June 2023, 25. COMM_CURRENT: 2023 Unincorporated area community name and LA City neighborhood, also known as "CSA", as of June 2023, 26. CITYCOMM_CURRENT: 2023 City/Community name label, as of June 2023.

普查区块(Census Block)通常以街道、道路或溪流作为边界。在城市中,普查区块可对应城市街区;而在道路稀少的乡村地区,区块的边界则可由其他地理特征划定。美国人口普查局(Census Bureau)于1990年首次在全国范围内划定普查区块。2020年人口普查TIGER/线形状文件(TIGER/Line Shapefiles)中,洛杉矶县(Los Angeles County)的普查区块数量较2010年更少。 本次更新记录如下: 1. 2023年6月更新:本次更新纳入了2022年11月圣克拉丽塔市(Santa Clarita City)的兼并范围,并新增了“金洛亚梅萨(Kinneloa Mesa)”社区(原属未合并的东帕萨迪纳地区)。新增FIP_CURRENT至CITYCOMM_CURRENT系列新数据字段,用于反映新增或更新的城市及社区信息。针对2022年11月圣克拉丽塔市兼并区域及新增的金洛亚梅萨社区所涉及的普查区块,更新了其城市/社区名称与FIPS代码(可通过FIP_Current、City_Current、Comm_Current字段值进行查询匹配)。本次更新中,共有36个原属未合并瓦伦西亚(Valencia)与卡斯泰克(Castaic)区域的普查区块被划归圣克拉丽塔市。 2. 2023年2月更新:根据人口统计顾问的问询与建议,更新了部分普查区块的CSA数值。 3. 2022年4月更新:根据2021年监督区、2022年服务规划区、2022年卫生区及2020年邮政编码制表区域(ZIP Code Tabulation Area, ZCTA)的官方数据,更新了普查区块的各项数据属性值。 本数据集创建于2021年3月。 数据集制作方式说明:本普查地理文件于2021年2月从美国人口普查局官网https://www2.census.gov/geo/tiger/TIGER2020PL/STATE/06_CALIFORNIA/06037/下载,并针对洛杉矶县完成定制化处理。在2020年普查区块数据中新增了多个数据字段,填充内容涵盖城市/社区名称、洛杉矶县联邦信息处理标准(FIPS)代码、2021年监督区编码、2020年普查邮政编码制表区域(ZCTA20),以及2022年卫生区、2022年服务规划区(SPA)等行政边界信息。 “Housing20”与“Pop20”字段的数值取自PL 94-171重划数据汇总文件:十年一次人口普查PL 94-171重划数据汇总文件。同理,新增“Feat_Type”字段,其填充值包括水体、海洋与陆地三类。2023年6月更新中新增的5个字段(FIP_CURRENT至CITYCOMM_CURRENT),用于适配2022年圣克拉丽塔市的兼并调整。受2022年11月圣克拉丽塔市兼并影响的普查区块,其城市/社区名称及FIPS代码将根据区块质心的地理位置完成赋值。 备注:本数据集包含3个NM海洋区块(由FEAT_TYPE字段标识),用户可通过定义查询语句移除此类数据。 数据字段详细说明: 1. STATE (STATEFP20):州联邦信息处理标准(FIPS)代码,加利福尼亚州对应代码为“06” 2. COUNTY (COUNTYFP20):县联邦信息处理标准(FIPS)代码,洛杉矶县对应代码为“037” 3. CT20 (TRACTCE20):6位普查辖区编号 4. BG20:7位街区组(Block Group)编号 5. CB20 (BLOCKCE20):4位普查区块编号 6. CTCB20:CT20与CB20的组合编码 7. FEAT_TYPE:土地利用类型,包括水体、海洋(3海里海洋)或陆地 8. FIP20:洛杉矶县联邦信息处理标准(FIPS)代码 9. BGFIP20:BG20与FIP20的组合编码 10. CITY:已合并城市名称 11. COMM:未合并区域社区名称及洛杉矶市街区,也称为“CSA” 12. CITYCOMM:城市/社区名称标签 13. ZCTA20:地块专属邮政编码 14. HD12:2012年卫生区编号 15. HD_NAME:卫生区名称 16. SPA22:2022年服务规划区编号 17. SPA_NAME:服务规划区名称 18. SUP21:2021年监督区编号 19. SUP_LABEL:监督区标签 20. POP20:2020年总人口(数据取自PL 94-171重划数据汇总文件——十年一次人口普查PL 94-171重划数据汇总文件的总人口统计数据) 21. HOUSING20:2020年住房总数(数据取自PL 94-171重划数据汇总文件——十年一次人口普查PL 94-171重划数据汇总文件的总住房统计数据) 22. FIP_CURRENT:截至2023年6月的洛杉矶县2023年FIPS代码 23. BG20FIP_CURRENT:截至2023年6月的BG20与2023年FIPS代码的组合编码 24. CITY_CURRENT:截至2023年6月的已合并城市名称 25. COMM_CURRENT:截至2023年6月的未合并区域社区名称及洛杉矶市街区,也称为“CSA” 26. CITYCOMM_CURRENT:截至2023年6月的城市/社区名称标签

提供机构:
Los Angeles County
创建时间:
2021-03-22
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