
Long Beach
- County:
- Harrison County
- County Seat:
- No
- Area (mi²):
- 10.243
- State:
- Mississippi
Long Beach is a city located in Harrison County, Mississippi. Long Beach has a 2025 population of 17,114. Long Beach is currently growing at a rate of 0.36% annually and its population has increased by 1.83% since the most recent census, which recorded a population of 16,806 in 2020.
The average household income in Long Beach is $89,260 with a poverty rate of 7.74%. The median age in Long Beach is 39.8 years: 36.7 years for males, and 43.5 years for females.