Harrison County
Sign in to savecounty in Mississippi, United States
Key facts
- Country
- United States
- State
- Mississippi
- Named after
- William Henry Harrison
- Seat
- Biloxi and Gulfport
- Largest city
- Gulfport
- Total
- 976 sq mi (2,530 km )
- Land
- 574 sq mi (1,490 km )
- Water
- 402 sq mi (1,040 km ) 41%
- Estimate 2025
- 217,136
- Density
- 363/sq mi (140/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 4th
- Website
- harrisoncountyms .gov
via Wikipedia infobox
Article
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.
History