
Casselberry
- County:
- Seminole County
- County Seat:
- No
- Area (mi²):
- 6.969
- State:
- Florida
Casselberry is a city located in Seminole County, Florida. Casselberry has a 2025 population of 31,694. Casselberry is currently growing at a rate of 1.77% annually and its population has increased by 9.49% since the most recent census, which recorded a population of 28,946 in 2020.
The average household income in Casselberry is $74,400 with a poverty rate of 13.73%. The median age in Casselberry is 37.6 years: 37.5 years for males, and 37.6 years for females.