Contra Costa County, CA boundary lines

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

Contra Costa County boundaries on map

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[Google map] • [Counties]

Latitude, longitude: 37.919, -121.952. Land area: 723 sq.mi, water area: 81 sq.mi. Population: 1,126,745

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.