Harper County is the name of two counties in the United States:
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Harper County, Kansas
Harper County (county code HP) is a county located in the U.S. state of Kansas. As of the 2020 census, the county population was 5,485. Its county seat and most populous city is Anthony. The county was named for Sergeant Marion Harper of the 2 ...
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Harper County, Oklahoma
Harper County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 3,685, making it the fourth-least populous county in Oklahoma. The county seat is Buffalo. It was created in 1907 from the northwestern ...
{{Geodis, uscounty