
Glen Allan
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 4.541
- State:
- Mississippi
Glen Allan is a CDP located in Washington County, Mississippi. Glen Allan has a 2025 population of 292. Glen Allan is currently growing at a rate of 6.96% annually and its population has increased by 97.3% since the most recent census, which recorded a population of 148 in 2020.
The average household income in Glen Allan is $58,626 with a poverty rate of 84.35%. The median age in Glen Allan is 17.6 years: 20.7 years for males, and 13.8 years for females.