United States of America GIS data

Census Regions, Census Divisions; January 1, 2015 vintage; Generalized

uav imagery by WebODM, acquired 2025-08-21 to 2025-08-21, 2.2 cm per pixel, published on OpenAerialMap.

Census Current (2026) WMS Legal and Statistical Entities Web Map Service; January 1, 2026 vintage

ACS 2024 Legal and Statistical Entities Web Map Service; January 1, 2024 vintage

uav imagery by WebODM, acquired 2025-08-07 to 2025-08-07, 3.8 cm per pixel, published on OpenAerialMap.

Legal and Statistical Entities Web Map Service; January 1, 2020 vintage

ACS 2015 Legal and Statistical Entities Web Map Service; January 1, 2015 vintage

ACS 2022 Legal and Statistical Entities Web Map Service; January 1, 2022 vintage

Legal and Statistical Entities Web Map Service; January 1, 2010 vintage

Legal and Statistical Entities Web Map Service; January 1, 2020 vintage

Census Tracts, Census Block Groups; January 1, 2015 vintage; Generalized

Legal and Statistical Entities Web Map Service; January 1, 2010 vintage

ACS 2021 Legal and Statistical Entities Web Map Service; January 1, 2021 vintage

Legal and Statistical Entities Web Map Service; January 1, 2020 vintage

Legal and Statistical Entities Web Map Service; January 1, 2010 vintage

uav imagery by THOMPSON, acquired 2025-09-18 to 2025-09-18, 4.4 cm per pixel, published on OpenAerialMap.

When Condos are approved for ground lots, those lots remain in the production (active) layer and attributes updated to reflect Condominium dwelling. 1.) Approved for Ground (Record Lots) When condos are approved for ground lots, the following fields are updated and the“Condo_Lot”field populated with a “Y” value UNDERLIES_CONDO = 1 CONDO_BOOK_NUM CONDO_PAGE_NUM CONDO_REGIME_NUM CONDOLOT = Y 2.) Approved for Ground (History Record Lots). As some have been replaced (killed) by another Record Lot, that's also a condo lot. When condos are approved for ground lots, the following fields are updated and the “Condo_Lot”field populated with a “Y” value UNDERLIES_CONDO = 1 CONDO_BOOK_NUM CONDO_PAGE_NUM CONDO_REGIME_NUM CONDOLOT = Y When Condos are approved for overlay lots, those lots are killed (retired / dead lots) and archived to their respective history layer. 3.) Approved for Overlays (Air Rights & Tax Lots). In the future, Parcels may be used. The following fields are updated and the “Condo_Lot” field populated with a “Y” value UNDERLIES_CONDO = 1 CONDO_BOOK_NUM CONDO_PAGE_NUM CONDO_REGIME_NUM CONDOLOT = Y Condo dwellings can also be queried city-wide via the individual VPM layers (active Record lots, dead Air Rights & Tax lots) where the value in the “UNDERLIES_CONDO” field is equal to 1.The following fields are populated once Condo Lots have been approved: Condo_Book_Num Condo_Page_Num Condo_Regime_Num

ACS 2025 Legal and Statistical Entities Web Map Service; January 1, 2025 vintage

ACS 2012 Legal and Statistical Entities Web Map Service; January 1, 2012 vintage

ACS 2026 Legal and Statistical Entities Web Map Service; January 1, 2026 vintage

Legal and Statistical Entities Web Map Service; January 1, 2020 vintage

Legal and Statistical Entities Web Map Service; January 1, 2010 vintage

Legal and Statistical Entities Web Map Service; January 1, 2000 vintage

uav imagery by WebODM, acquired 2025-08-11 to 2025-08-11, 5.0 cm per pixel, published on OpenAerialMap.

Age, Sex, Race, Ethnicity, Total Housing Units, and Voting Age Population. This service is updated annually with American Community Survey (ACS) 5-year data. Contact: District of Columbia, Office of Planning. Email: planning@dc.gov. Geography: 2022 Wards (State Legislative Districts [Upper Chamber]). Current Vintage: 2019-2023. ACS Table(s): DP05. Data downloaded from: Census Bureau's API for American Community Survey. Date of API call: January 2, 2025. National Figures: data.census.gov. Please cite the Census and ACS when using this data. Data Note from the Census: Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see Accuracy of the Data). The effect of nonsampling error is not represented in these tables. Data Processing Notes: This layer is updated automatically when the most current vintage of ACS data is released each year, usually in December. The layer always contains the latest available ACS 5-year estimates. It is updated annually within days of the Census Bureau's release schedule. Boundaries come from the US Census TIGER geodatabases. Boundaries are updated at the same time as the data updates (annually), and the boundary vintage appropriately matches the data vintage as specified by the Census. These are Census boundaries with water and/or coastlines clipped for cartographic purposes. For census tracts, the water cutouts are derived from a subset of the 2020 AWATER (Area Water) boundaries offered by TIGER. For state and county boundaries, the water and coastlines are derived from the coastlines of the 500k TIGER Cartographic Boundary Shapefiles. The original AWATER and ALAND fields are still available as attributes within the data table (units are square meters). Field alias names were created based on the Table Shells file available from the American Community Survey Summary File Documentation page. Data processed using R statistical package and ArcGIS Desktop. Margin of Error was not included in this layer but is available from the Census Bureau. Contact the Office of Planning for more information about obtaining Margin of Error values.

ACS 2013 Legal and Statistical Entities Web Map Service; January 1, 2013 vintage

ACS 2013 Legal and Statistical Entities Web Map Service; January 1, 2013 vintage

Legal and Statistical Entities Web Map Service; January 1, 2020 vintage

ACS 2013 Legal and Statistical Entities Web Map Service; January 1, 2013 vintage

Legal and Statistical Entities Web Map Service; January 1, 2010 vintage

Census Current (2020) Physical Features Web Map Service; January 1, 2020 vintage

ACS 2012 Legal and Statistical Entities Web Map Service; January 1, 2012 vintage

ACS 2012 Legal and Statistical Entities Web Map Service; January 1, 2012 vintage

Congressional Districts, Voting Districts, State Legislative Districts - Upper, State Legislative Districts - Lower; January 1, 2020 vintage; Generalized

Metropolitan and Micropolitan Statistical Areas and Related Statistical Areas: Metropolitan NECTAs, Micropolitan NECTAs, Combined Statistical Areas, Metropolitan Statistical Areas, Micropolitan Statistical Areas; January 1, 2021 vintage; Generalized

Military Installations; National Park Service Areas; Correctional Facilities; Colleges and Universities