There are 10 US Post Offices in Crawford County serving a total of 38,097 residents equating to 3,810 residents per post office. It's estimated that approximately 60,807 packages are handled across the 10 county post offices annually. Crawford County (county code CR) is a county located in Southeast Kansas. As of the 2010 census, the county population was 39,134. Its county seat is Girard, and its most populous city is Pittsburg. The county was named in honor of Samuel J. Crawford, Governor of Kansas. Located in the Osage Cuestas and Cherokee Lowlands, it lies halfway between Kansas City, Missouri and Tulsa, Oklahoma. Crawford County, and much of southeast Kansas, was founded on coal mining, the Pittsburg-Weir Coalfield being located here, and is still known for mining today. Pittsburg State University is located in Crawford County."