Harrison County

Harrison County is a county located in the U.S. state of Mississippi. As of the 2020 census, Harrison County is the second-most populous county in Mississippi with a population of 208,621; although the most recent population estimate from 2025 suggests Harrison County has overtaken Hinds County to become the state's most populous county, with a population of 217,136. Its county seats are Biloxi and Gulfport. The county is named after U.S. President William Henry Harrison. Harrison County is part of the Gulfport-Biloxi metropolitan area. The county was severely damaged from both Hurricane Camille on August 17, 1969, and Hurricane Katrina on August 29, 2005, causing catastrophic effects.

Country

United States

Inception

1841

Website

http://www.co.harrison.ms.us, https://harrisoncountyms.gov/