Webster County's 2026 population is estimated at 37,421, reflecting a 0.69% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Webster County is the 18th largest county in Iowa. The 2010 population was 37,882 and has grown -1.22% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.7 years
Female: 42.5 years
Male: 36.6 years
There are 29,001 adults, (7,323 of whom are seniors) in Webster County.
Female: 17,549 (47.6%)
Male: 19,337 (52.4%)
The racial composition of Webster County includes 86.17% White, 3.26% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 31,785 | 86.17% |
| Two or more races | 2,918 | 7.91% |
| Black or African American | 1,201 | 3.26% |
| Asian | 455 | 1.23% |
| Other race | 431 | 1.17% |
| Native American | 96 | 0.26% |
Webster County 's average per capita income is $47,019. Household income levels show a median of $68,975. The poverty rate stands at 12.86%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $105,805 | - |
| Families | $93,337 | $109,275 |
| Households | $68,975 | $83,997 |
| Non Families | $37,886 | $51,434 |
Average Income
Median Household Income
Poverty Rate