
Union
- County:
- Carroll County
- County Seat:
- No
- Area (mi²):
- 0.311
- State:
- New Hampshire
Union is a CDP located in Carroll County, New Hampshire. Union has a 2025 population of 429. Union is currently growing at a rate of 3.62% annually and its population has increased by 77.27% since the most recent census, which recorded a population of 242 in 2020.
The average household income in Union is $93,871 with a poverty rate of 3.67%. The median age in Union is 24.9 years: 27.6 years for males, and 23.6 years for females.