There are 11 zip codes in Harrison County, Mississippi. The most populated is 39503, located in Gulfport. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
3950353,049Gulfport
3953236,004Biloxi
3950124,091Gulfport
3953118,766Biloxi
3956018,289Long Beach
3950718,151Gulfport
3957114,010Pass Christian
3957413,937Saucier
3954012,922Diberville
395308,170Biloxi
395341,898Biloxi

Zip Codes in Harrison County, Mississippi by Population (2024)