Doniphan County, Kansas
Doniphan County is the northeasternmost county in the U.S. state of Kansas. Its county seat is Troy, and its most populous city is Wathena. As of the 2020 census, the county population was 7,510. The county was named after Alexander Doniphan, a Mexican–American War hero. It is bounded on the east by the Missouri River, to the south by Atchison County and to the west by Brown County.