Mills County's estimated 2026 population is 14,838 with a growth rate of 0.3% in the past year according to the most recent United States census data. Mills County is the 50th largest county in Iowa. The 2010 population was 15,076 and has seen a growth of -1.58% since that time.
Data after 2023 is projected based on recent change
Overall: 42.1 years
Female: 42.3 years
Male: 41.6 years
There are 11,242 adults, (2,921 of whom are seniors) in Mills County.
Female: 7,293 (50.1%)
Male: 7,275 (49.9%)
The racial composition of Mills County includes 93.39% White, and smaller percentages for Asian, other race, Black or African American, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 13,605 | 93.39% |
| Two or more races | 744 | 5.11% |
| Asian | 82 | 0.56% |
| Other race | 62 | 0.43% |
| Black or African American | 59 | 0.4% |
| Native American | 16 | 0.11% |
Mills County's average per capita income is $56,207. Household income levels show a median of $90,753. The poverty rate stands at 8.22%.
Name | Median | Mean |
|---|---|---|
| Married Families | $117,282 | - |
| Families | $109,386 | $125,186 |
| Households | $90,753 | $109,810 |
| Non Families | $47,750 | $68,523 |
Average Income
Median Household Income
Poverty Rate