Union township
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 15.288
- State:
- Pennsylvania
Union township is located in Washington County, Pennsylvania. Union township has a 2026 population of 5,492. Union township is currently growing at a rate of 1.37% annually and its population has increased by 1.95% since the most recent census, which recorded a population of 5,387 in 2020.
The median household income in Union township is $61,071 with a poverty rate of 14.98%. The median age in Union township is 48.8 years: 43.9 years for males, and 53.3 years for females. For every 100 females there are 85.1 males.