
Union
- County:
- Northeastern CT Planning Region
- County Seat:
- No
- Area (mi²):
- 28.85
- State:
- Connecticut
Union is located in Northeastern CT Planning Region, Connecticut. Union has a 2025 population of 805. Union is currently growing at a rate of 0.5% annually and its population has increased by 2.94% since the most recent census, which recorded a population of 782 in 2020.
The average household income in Union is $121,786 with a poverty rate of 7.16%. The median age in Union is 49.4 years: 51.7 years for males, and 46.5 years for females.