
Thornton
- County:
- Cerro Gordo County
- County Seat:
- No
- Area (mi²):
- 1.244
- State:
- Iowa
Thornton is a city located in Cerro Gordo County, Iowa. Thornton has a 2025 population of 385. Thornton is currently declining at a rate of -1.03% annually and its population has decreased by -4.7% since the most recent census, which recorded a population of 404 in 2020.
The average household income in Thornton is $82,821 with a poverty rate of 6.55%. The median age in Thornton is 34.3 years: 34.8 years for males, and 30.5 years for females.