Preble 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 42,337 people, with a population density of about 99.62 persons per square mile.
The county spans a total land area of 425.00 square miles (1,101.00 square kilometers). The administrative center and county seat is Eaton, which often serves as a hub for local governance and services. The largest city within the county by population is Eaton.
Geographically, Preble County experiences varied elevations, with its highest point at Eldorado 1,143 ft and its lowest point at Camden 0 ft. The region operates in the UTC-5.