Richland County is a county located in the U.S. state of Montana. As of the most recent data available, the county has a population of approximately 9,667 people, with a population density of about 4.64 persons per square mile.
The county spans a total land area of 2,084.00 square miles (5,398.00 square kilometers). The administrative center and county seat is Sidney, which often serves as a hub for local governance and services. The largest city within the county by population is Sidney.
Geographically, Richland County experiences varied elevations, with its highest point at Lambert 2,346 ft and its lowest point at Knife River 0 ft. The region operates in the UTC-7.