
Collinsville
- County:
- DeKalb County
- County Seat:
- No
- Area (mi²):
- 3.345
- State:
- Alabama
Collinsville is a town located in DeKalb County, Alabama. Collinsville has a 2025 population of 2,070. Collinsville is currently growing at a rate of 0.15% annually and its population has increased by 0.78% since the most recent census, which recorded a population of 2,054 in 2020.
The average household income in Collinsville is $50,401 with a poverty rate of 28.37%. The median age in Collinsville is 41.9 years: 36.4 years for males, and 48.4 years for females.