Greene 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 147,886 people, with a population density of about 356.35 persons per square mile.
The county spans a total land area of 415.00 square miles (1,075.00 square kilometers). The administrative center and county seat is Xenia, which often serves as a hub for local governance and services. The largest city within the county by population is Beavercreek.
Geographically, Greene County experiences varied elevations, with its highest point at Bowersville 1,090 ft and its lowest point at Spring Valley 0 ft. The region operates in the UTC-5.