
South Ashburnham
- County:
- Worcester County
- County Seat:
- No
- Area (mi²):
- 2.984
- State:
- Massachusetts
South Ashburnham is a CDP located in Worcester County, Massachusetts. South Ashburnham has a 2025 population of 1,046. South Ashburnham is currently declining at a rate of -0.1% annually but its population has increased by 18.46% since the most recent census, which recorded a population of 883 in 2020.
The average household income in South Ashburnham is $107,985 with a poverty rate of 16.01%. The median age in South Ashburnham is 41.8 years: 45.2 years for males, and 41.2 years for females.