
Dayville
- County Seat:
- No
- Area (mi²):
- 0.932
- State:
- Connecticut
Dayville is a CDP located in . Dayville has a 2025 population of 363. Dayville is currently growing at a rate of 7.4% annually but its population has decreased by -17.5% since the most recent census, which recorded a population of 440 in 2020.
The average household income in Dayville is $69,589 with a poverty rate of 0.26%. The median age in Dayville is 36.5 years: 40.3 years for males, and 35 years for females.