
Seconsett Island
- County:
- Barnstable County
- County Seat:
- No
- Area (mi²):
- 0.103
- State:
- Massachusetts
Seconsett Island is a CDP located in Barnstable County, Massachusetts. Seconsett Island has a 2025 population of 146. Seconsett Island is currently growing at a rate of 2.1% annually and its population has increased by 294.59% since the most recent census, which recorded a population of 37 in 2020.
The average household income in Seconsett Island is $92,257 with a poverty rate of 0%. The median age in Seconsett Island is 52.2 years: 49.9 years for males, and 75.1 years for females.