Union County's estimated 2025 population is 11,997 with a growth rate of 0.35% in the past year according to the most recent United States census data. Union County is the 63rd largest county in Iowa. The 2010 population was 12,513 and has seen a growth of -4.12% since that time.
Data after 2023 is projected based on recent change
The racial composition of Union County includes 94.19% White, and smaller percentages for other race, Black or African American, Native American and multiracial populations.
White (94.19%)
Two or more races (3.61%)
Other race (1.74%)
Black or African American (0.46%)
Native American (0.01%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,339 | 94.19% |
| Two or more races | 434 | 3.61% |
| Other race | 209 | 1.74% |
| Black or African American | 55 | 0.46% |
| Native American | 1 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Union County's average per capita income is $40,841. Household income levels show a median of $56,813. The poverty rate stands at 12.6%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,182 | - |
| Families | $80,000 | $92,935 |
| Households | $56,813 | $73,974 |
| Non Families | $35,743 | $44,447 |
Average Income
Median Household Income
Poverty Rate
