Public Housing Buildings
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HUD administers Federal aid to local Housing Agencies (HAs) that manage housing for low-income residents at rents they can afford. Likewise, HUD furnishes technical and professional assistance in planning, developing, and managing the buildings that comprise low-income housing developments. This dataset provides the location and resident characteristics of public housing development buildings. Location data for HUD-related properties and facilities are derived from HUD's enterprise geocoding service. While not all addresses are able to be geocoded and mapped to 100% accuracy, we are continuously working to improve address data quality and enhance coverage. Please consider this issue when using any datasets provided by HUD. When using this data, take note of the field titled “LVL2KX” which indicates the overall accuracy of the geocoded address using the following return codes: ‘R’ - Interpolated rooftop (high degree of accuracy, symbolized as green) ‘4’ - ZIP+4 centroid (high degree of accuracy, symbolized as green) ‘B’ - Block group centroid (medium degree of accuracy, symbolized as yellow) ‘T’ - Census tract centroid (low degree of accuracy, symbolized as red) ‘2’ - ZIP+2 centroid (low degree of accuracy, symbolized as red) ‘Z’ - ZIP5 centroid (low degree of accuracy, symbolized as red) ‘5’ - ZIP5 centroid (same as above, low degree of accuracy, symbolized as red) Null - Could not be geocoded (does not appear on the map) For the purposes of displaying the location of an address on a map only use addresses and their associated lat/long coordinates where the LVL2KX field is coded ‘R’ or ‘4’. These codes ensure that the address is displayed on the correct street segment and in the correct census block. The remaining LVL2KX codes provide a cascading indication of the most granular level geography for which an address can be confirmed. For example, if an address cannot be accurately interpolated to a rooftop (‘R’), or ZIP+4 centroid (‘4’), then the address will be mapped to the centroid of the next nearest confirmed geography: block group, tract, and so on. When performing any point-in polygon analysis it is important to note that points mapped to the centroids of larger geographies will be less likely to map accurately to the smaller geographies of the same area. For instance, a point coded as ‘5’ in the correct ZIP Code will be less likely to map to the correct block group or census tract for that address. In an effort to protect Personally Identifiable Information (PII), the characteristics for each building are suppressed with a -4 value when the “Number_Reported” is equal to, or less than 10. To learn more about Public Housing visit: https://www.hud.gov/program_offices/public_indian_housing/programs/ph/ Development FAQs - IMS/PIC | HUD.gov / U.S. Department of Housing and Urban Development (HUD). Data Dictionary: DD_Public Housing Buildings Date of Coverage: 06/2026 Last Updated: Quarterly
美国住房和城市发展部（HUD）为当地住房管理机构（HAs）提供联邦援助，这些机构面向低收入群体管理可负担住房。 与此同时，HUD还为低收入住房开发项目的规划、建设与运营提供技术与专业支持。 本数据集涵盖公共住房开发项目楼宇的位置信息与住户特征数据。 HUD相关物业与设施的位置数据均源自HUD的企业地理编码服务。 尽管并非所有地址均可实现100%精准的地理编码与地图匹配，但我们正持续优化地址数据质量并扩大覆盖范围。 请在使用HUD提供的各类数据集时留意该局限性。 使用本数据集时，请留意名为"LVL2KX"的字段，该字段通过以下返回代码标识地址地理编码的整体精度：‘R’——插值屋顶坐标（精度极高，以绿色标注）；‘4’——ZIP+4质心（精度极高，以绿色标注）；‘B’——街区组质心（精度中等，以黄色标注）；‘T’——普查区质心（精度较低，以红色标注）；‘2’——ZIP+2质心（精度较低，以红色标注）；‘Z’——ZIP5质心（精度较低，以红色标注）；‘5’——ZIP5质心（与上述一致，精度较低，以红色标注）；空值——无法完成地理编码（不会在地图上显示）。 若仅需在地图上展示地址位置，请仅使用"LVL2KX"字段编码为‘R’或‘4’的地址及其关联的经纬度坐标。此类编码可确保地址匹配至正确的街道区段与普查街区。 其余"LVL2KX"代码按层级依次标识地址可被确认的最细粒度地理范围。 例如，若某地址无法被精准插值至屋顶坐标（‘R’）或ZIP+4质心（‘4’），则该地址将匹配至下一级最近的已确认地理范围的质心：街区组、普查区，依此类推。 开展任何点面叠加分析时，请注意：匹配至较大地理范围质心的点位，难以精准对应同一区域内的较小地理范围。 例如，编码为‘5’的点位虽匹配至正确邮政编码区域，但难以对应该地址所属的准确街区组或普查区。 为保护个人可识别信息（Personally Identifiable Information，简称PII），当"Number_Reported"字段值小于或等于10时，对应楼宇的特征数据将以-4值进行脱敏处理。 如需了解更多公共住房相关信息，请访问：https://www.hud.gov/program_offices/public_indian_housing/programs/ph/ 开发常见问题解答 - IMS/PIC | HUD.gov / 美国住房和城市发展部（U.S. Department of Housing and Urban Development，简称HUD）。 数据字典：DD_公共住房楼宇 覆盖日期：2026年6月 最后更新频率：季度更新
