Fayette County's 2026 population is estimated at 18,978, reflecting a -0.46% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fayette County is the 35th largest county in Iowa. The 2010 population was 20,860 and has grown -9.02% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.9 years
Female: 46 years
Male: 42.9 years
There are 15,165 adults, (4,424 of whom are seniors) in Fayette County.
Female: 9,583 (49.7%)
Male: 9,705 (50.3%)
The racial composition of Fayette County includes 92.2% White, and smaller percentages for Asian, Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 17,784 | 92.2% |
| Two or more races | 1,026 | 5.32% |
| Asian | 177 | 0.92% |
| Black or African American | 153 | 0.79% |
| Other race | 78 | 0.4% |
| Native American | 69 | 0.36% |
| Native Hawaiian or Pacific Islander | 1 | 0.01% |
Fayette County 's average per capita income is $45,396. Household income levels show a median of $60,165. The poverty rate stands at 11.99%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,776 | $111,638 |
| Families | $81,360 | $101,935 |
| Households | $60,165 | $80,301 |
| Non Families | $35,229 | $46,503 |
Average Income
Median Household Income
Poverty Rate