Harrison County, Mississippi

Harrison County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF HARRISON GUS Population: 213,730 (2024) ID: 168569	County	Official County Government	Contact: COUNTY ADMINISTRATOR PO BOX CC, GULFPORT MS 39502-0860
CITY OF GULFPORT GUS Population: 74,621 (2024) ID: 193614	Municipal	Municipal Government Within County	Contact: DIRECTOR OF URBAN DEVELOPMENT PO BOX 1780, GULFPORT MS 39502-1780
CITY OF BILOXI GUS Population: 48,144 (2024) ID: 168635	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 429, BILOXI MS 39533-0429
CITY OF LONG BEACH GUS Population: 17,217 (2024) ID: 129293	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 929, LONG BEACH MS 39560-0929
CITY OF D'IBERVILLE GUS Population: 13,399 (2024) ID: 168636	Municipal	Municipal Government Within County	Contact: COMPTROLLER PO BOX 6519, DIBERVILLE MS 39540-6519
CITY OF PASS CHRISTIAN GUS Population: 6,429 (2024) ID: 107419	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 368, PASS CHRISTIAN MS 39571-0368