Greenwood County is a county located in the southeast portion of the U.S. state of Kansas. Its county seat and most populous city is Eureka. As of the 2020 census, the county population was 6,016. The county was named for Alfred Greenwood, a U.S. congressman from Arkansas that advocated Kansas statehood.

Lyon County is a county located in the U.S. state of Kansas. Its county seat and largest city is Emporia. As of the 2020 census, the county population was 32,179. The county was named for Nathaniel Lyon, a general who was killed at the Battle of Wilson's Creek during the American Civil War.