Dallas County's 2026 population is estimated at 122,843, reflecting a 3.15% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dallas County is the 6th largest county in Iowa. The 2010 population was 66,751 and has grown 84.03% since 2010.
Data after 2023 is projected based on recent change
Overall: 36.1 years
Female: 36.7 years
Male: 35.5 years
There are 79,292 adults, (13,893 of whom are seniors) in Dallas County.
Female: 54,249 (50.2%)
Male: 53,719 (49.8%)
The racial composition of Dallas County includes 83.92% White, 4.87% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 90,607 | 83.92% |
| Two or more races | 6,742 | 6.24% |
| Asian | 5,263 | 4.87% |
| Black or African American | 3,189 | 2.95% |
| Other race | 1,949 | 1.81% |
| Native American | 186 | 0.17% |
| Native Hawaiian or Pacific Islander | 32 | 0.03% |
Dallas County 's average per capita income is $65,003. Household income levels show a median of $102,379. The poverty rate stands at 6.26%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $150,504 | $181,870 |
| Families | $136,078 | $165,735 |
| Households | $102,379 | $137,324 |
| Non Families | $59,953 | $79,468 |
Average Income
Median Household Income
Poverty Rate
