
Gilsum
- County:
- Cheshire County
- County Seat:
- No
- Area (mi²):
- 16.669
- State:
- New Hampshire
Gilsum is located in Cheshire County, New Hampshire. Gilsum has a 2025 population of 802. Gilsum is currently growing at a rate of 1.01% annually and its population has increased by 6.23% since the most recent census, which recorded a population of 755 in 2020.
The average household income in Gilsum is $88,867 with a poverty rate of 7.79%. The median age in Gilsum is 44.1 years: 40 years for males, and 49.9 years for females.