Union County's 2026 population is estimated at 41,985, reflecting a -0.78% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Union County is the 50th largest county in Pennsylvania. The 2010 population was 45,005 and has grown -6.71% since 2010.
Overall: 41 years
Female: 42.5 years
Male: 39.1 years
There are 35,086 adults, (8,439 of whom are seniors) in Union County.
Female: 19,590 (46.1%)
Male: 22,866 (53.9%)
The racial composition of Union County includes 88.64% White, 5.95% Black or African American, and smaller percentages for Two or more races, Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 37,633 | 88.64% |
| Black or African American | 2,526 | 5.95% |
| Two or more races | 971 | 2.29% |
| Asian | 846 | 1.99% |
| Other race | 422 | 0.99% |
| Native American | 58 | 0.14% |
Union County 's average per capita income is $45,339. Household income levels show a median of $76,404. The poverty rate stands at 8.96%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $104,600 | $132,662 |
| Families | $97,793 | $122,916 |
| Households | $76,404 | $105,957 |
| Non Families | $37,713 | $68,885 |
Average Income
Median Household Income
Poverty Rate