Doniphan is an incorporated community in Kansas within a larger County with most populous city?
Doniphan County, Kansas Doniphan County (county code DP) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 7,945. Its county seat is Troy, and its most populous city is Wathena.
Topeka, Kansas metropolitan area The Topeka Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of five counties in northeastern Kansas, anchored by the city of Topeka. In total, it has an area of 3,290.15 square miles. As of the 2010 census, the MSA had a population of 233,870 (though a July 1, 2012 estimate placed the population at 234,566).