Illinois boundary line

Download Illinois state boundary line data in CSV format. For example Illinois boundary line data can be used to draw border line on Google map or polyline on equirectangular map image. Read more

Illinois boundaries on map

Boundaries on state map are drawn using data from this site. You can click on flag to hide it.
[Google map] • [States]

Latitude, longitude: 40.103, -89.153. Land area: 55519 sq.mi, water area: 2395 sq.mi. Population: 12,859,995

Notes, sources:

Census.gov: Population 2015 estimated . Area (land and water area, sq.mi.). Both files retrieved 10/04/2016.
Boundary data: Since 10/04/2016 all boundary files are replaced, old version was extract from openstreetmap.org. New: Census.gov (ZIP, 8.5Mb), simplified using Ramer–Douglas–Peucker algorithm.