In what year did Pratt County, Kansas and Pratt, Kansas have the largest population?
Pratt County, Kansas Pratt County (standard abbreviation: PR) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 9,656. The largest city and county seat is Pratt.
Hays, Kansas Hays is a city in and the county seat of Ellis County, Kansas, United States. The largest city in northwestern Kansas, it is the economic and cultural center of the region. It is also a college town, home to Fort Hays State University. As of the 2010 census, the city population was 20,510.