People

The county polygons have data that includes demographic data from the American Community Survey (ACS), including age, race and ethnicity, migration and immigration, education, household size, and family composition.该县界多边形数据集包含源自美国社区调查（American Community Survey，ACS）的人口统计数据，具体涵盖年龄、种族与族裔、移民与迁移、教育程度、家庭规模以及家庭构成等维度。