Cook County, IL boundary lines

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

Cook County boundaries on map

Note: Boundary lines on US counties map are drawn using data from our site. Click on flag to hide it.
[Google map] • [Counties]

Latitude, longitude: 41.894, -87.645. Land area: 945 sq.mi, water area: 689 sq.mi. Population: 5,238,216

Souces, notes:

Census.gov: County population 2015 estimated.National Counties Gazetteer File (ZIP, 131KB, Land and water area, latitude, longitude). Retrieved 10/04/2016.
(AS, MP, VI: population of 2010)
Boundary data: Since 10/04/2016 all boundary files are replaced! Old version was extract from openstreetmap.org. New: Census.gov, Polylines are simplified using Ramer–Douglas–Peucker algorithm.