ACS Place of Birth Boundaries

Overview This feature service provides U.S. boundary layers enriched with American Community Survey population characteristics related to place of birth and citizenship. It includes state, county, and tract polygon layers that support demographic mapping and analysis across multiple geographic levels. Feature Layers State — State-level polygons with identifiers, land and water area, and American Community Survey estimates describing total population, native population, foreign-born population, naturalized citizens, and place-of-birth distributions by broad world region. County — County-level polygons with the same demographic themes, paired with county names and state references for regional comparison and aggregation. Tract — Census tract polygons with the same population and place-of-birth measures, supporting detailed neighborhood-scale analysis. Geographic Coverage The layers cover the United States at statewide, countywide, and census tract scales. Use Cases Mapping foreign-born and native-born population patterns Comparing citizenship and place-of-birth characteristics across administrative areas Supporting demographic profiling, equity analysis, and community planning Creating thematic maps for regional, county, and tract-level census analysis Data Characteristics The service includes Census Bureau geographic identifiers, administrative names, and area measurements along with American Community Survey estimates and margins of error. Several calculated percentage fields summarize the share of the population born in Europe, Asia, Africa, Oceania, Latin America, and Northern America.