Washington County is a county located in the U.S. state of Arkansas. As of the most recent data available, the county has a population of approximately 157,715 people, with a population density of about 166.02 persons per square mile.
The county spans a total land area of 950.00 square miles (2,460.00 square kilometers). The administrative center and county seat is Fayetteville, which often serves as a hub for local governance and services. The largest city within the county by population is Fayetteville.
Geographically, Washington County experiences varied elevations, with its highest point at Winslow 1,756 ft and its lowest point at Johnson 0 ft. The region operates in the UTC-6.