Highland County is a county located in the U.S. state of Ohio. As of the most recent data available, the county has a population of approximately 40,875 people, with a population density of about 73.92 persons per square mile.
The county spans a total land area of 553.00 square miles (1,432.00 square kilometers). The administrative center and county seat is Hillsboro, which often serves as a hub for local governance and services. The largest city within the county by population is Hillsboro.
Geographically, Highland County experiences varied elevations, with its highest point at Hillsboro 1,132 ft and its lowest point at Greenfield 910 ft. The region operates in the UTC-5.