Thornton is a city located in Cerro Gordo County, Iowa. Thornton has a 2025 population of 391 . Thornton is currently declining at a rate of -0.76% annually and its population has decreased by -3.22% 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. For every 100 females there are 96.3 males.
Data after 2023 is projected based on recent change
The racial composition of Thornton includes 94.19% White, and smaller percentages for other race, Asian and multiracial populations.
White (94.19%)
Two or more races (3.56%)
Other race (1.87%)
Asian (0.37%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 503 | 94.19% |
| Two or more races | 19 | 3.56% |
| Other race | 10 | 1.87% |
| Asian | 2 | 0.37% |
Married
Widowed
Divorced
Separated
Never Married
Thornton's average per capita income is $50,104. Household income levels show a median of $66,979. The poverty rate stands at 6.55%.
Name | Median | Mean |
|---|---|---|
| Married Families | $76,944 | - |
| Families | $73,125 | $90,082 |
| Households | $66,979 | $82,821 |
| Non Families | $51,250 | $55,769 |
Average Income
Median Household Income
Poverty Rate