ACS Housing Units by Year Built Boundaries

Overview This feature service contains U.S. Census geography boundaries enriched with American Community Survey housing age characteristics. It brings together state, county, and census tract polygons with counts and median-year measures that describe the housing stock by year built, along with owner-occupied and renter-occupied housing patterns. Feature Layers State: State boundaries with ACS housing-unit-by-year-built summaries, including total housing units, housing units by construction period, ownership tenure breakdowns, and median year built measures. County: County boundaries with the same housing age and tenure indicators, supporting county-level comparison of housing stock across the United States. Tract: Census tract boundaries with detailed ACS housing-age and tenure summaries for fine-grained neighborhood-scale analysis. Geographic Coverage The service covers the United States using Census Bureau administrative and statistical boundaries. It includes statewide, countywide, and census tract geography for broad-to-local housing analysis. Use Cases Mapping the age distribution of housing stock across the United States Comparing owner-occupied and renter-occupied housing by construction period Supporting housing condition, neighborhood change, and redevelopment studies Analyzing median year built patterns at state, county, and tract scales Data Notes The layers include standard Census geography identifiers and automatically maintained shape fields, making the service suitable for display, filtering, and spatial analysis in ArcGIS applications. The housing attributes are derived from American Community Survey tabulations on year structure built and occupancy tenure.