Williams 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 39,188 people, with a population density of about 92.86 persons per square mile.
The county spans a total land area of 422.00 square miles (1,093.00 square kilometers). The administrative center and county seat is Bryan, which often serves as a hub for local governance and services. The largest city within the county by population is Bryan.
Geographically, Williams County experiences varied elevations, with its highest point at Edon 900 ft and its lowest point at Stryker 719 ft. The region operates in the UTC-5.