
Shirley
- County:
- Middlesex County
- County Seat:
- No
- Area (mi²):
- 1.318
- State:
- Massachusetts
Shirley is a CDP located in Middlesex County, Massachusetts. Shirley has a 2025 population of 1,339. Shirley is currently declining at a rate of -0.45% annually and its population has decreased by -21.97% since the most recent census, which recorded a population of 1,716 in 2020.
The average household income in Shirley is $101,274 with a poverty rate of 4.22%. The median age in Shirley is 44.2 years: 40.9 years for males, and 44.6 years for females.