This shows the boundaries for American Indian reservations, counties, tracts, block groups, blocks, military boundaries and political townships along with the associated demographic statistics collect
The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topolo
Kansas University Center for Spatial GIS Open Data2020-07-17 更新10