https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/State_County/MapServer/0/query?where=STUSAB+IN+%28%27MN%27%2C%27ND%27%2C%27SD%27%2C%27IA%27%2C%27WI%27%2C%27MI%27%29&outFields=NAME%2CSTUSAB%2CSTATE%2CINTPTLAT%2CINTPTLON&returnGeometry=true&outSR=4326&maxAllowableOffset=0.02&geometryPrecision=4&f=geojson
Source: U.S. Census Bureau, TIGERweb State_County States layer 0, January 1, 2026 vintage. EPSG:4326 longitude,latitude, server-generalized maxAllowableOffset 0.02 degrees, rounded to 4 decimals. Public-domain TIGER data.
Public-domain provenance: https://www.census.gov/newsroom/archives/2014-pr/cb14-208.html