Phillips County is a county located in the U.S. state of Kansas. Its county seat and largest city is Phillipsburg. As of the 2020 census, the county population was 4,981. The county was named after William Phillips, a free-state abolition journalist and colonel in the American Civil War.

Harlan County is a county in the U.S. state of Nebraska. As of the 2020 United States Census, the population was 3,073. Its county seat is Alma. The county is home to the Harlan County Reservoir.