Butler County's 2026 population is estimated at 14,018, reflecting a -0.49% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Butler County is the 57th largest county in Iowa. The 2010 population was 14,916 and has grown -6.02% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.7 years
Female: 44.9 years
Male: 42.4 years
There are 11,075 adults, (3,306 of whom are seniors) in Butler County.
Female: 7,179 (50.3%)
Male: 7,089 (49.7%)
The racial composition of Butler County includes 94.96% White, and smaller percentages for Two or more races, Asian, other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 13,549 | 94.96% |
| Two or more races | 387 | 2.71% |
| Asian | 179 | 1.25% |
| Other race | 122 | 0.86% |
| Black or African American | 24 | 0.17% |
| Native American | 7 | 0.05% |
Butler County 's average per capita income is $48,860. Household income levels show a median of $73,715. The poverty rate stands at 9.22%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $96,709 | - |
| Families | $91,851 | $105,870 |
| Households | $73,715 | $90,569 |
| Non Families | $44,261 | $51,166 |
Average Income
Median Household Income
Poverty Rate
