
Union Valley
- County:
- Collin County
- County Seat:
- No
- Area (mi²):
- 2.458
- State:
- Texas
Union Valley is a city located in Collin County, Texas. Union Valley has a 2025 population of 559. Union Valley is currently growing at a rate of 6.88% annually and its population has increased by 47.49% since the most recent census, which recorded a population of 379 in 2020.
The average household income in Union Valley is $123,708 with a poverty rate of 19.44%. The median age in Union Valley is 41 years: 46 years for males, and 39.6 years for females.