
Spencer
- County:
- Worcester County
- County Seat:
- No
- Area (mi²):
- 2.109
- State:
- Massachusetts
Spencer is a CDP located in Worcester County, Massachusetts. Spencer has a 2025 population of 5,621. Spencer is currently declining at a rate of -0.09% annually and its population has decreased by -3.25% since the most recent census, which recorded a population of 5,810 in 2020.
The average household income in Spencer is $71,108 with a poverty rate of 11.41%. The median age in Spencer is 50.8 years: 49 years for males, and 52.3 years for females.