Harrison County is a county located in the U.S. state of Mississippi. As of the most recent data available, the county has a population of approximately 189,601 people, with a population density of about 326.34 persons per square mile.
The county spans a total land area of 581.00 square miles (1,505.00 square kilometers). The administrative center and county seat is Gulfport, which often serves as a hub for local governance and services. The largest city within the county by population is Gulfport.
Geographically, Harrison County experiences varied elevations, with its highest point at Saucier 155 ft and its lowest point at Pass Christian 10 ft. The region operates in the UTC-6.