Harrison County, Mississippi Zip Codes
| Gulfport | 53,049 |
| Biloxi | 36,004 |
| Gulfport | 24,091 |
| Biloxi | 18,766 |
| Long Beach | 18,289 |
| Gulfport | 18,151 |
| Pass Christian | 14,010 |
| Saucier | 13,937 |
| Diberville | 12,922 |
| Biloxi | 8,170 |
| Biloxi | 1,898 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.