
Millsboro
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 0.788
- State:
- Pennsylvania
Millsboro is a CDP located in Washington County, Pennsylvania. Millsboro has a 2025 population of 221. Millsboro is currently declining at a rate of -11.95% annually and its population has decreased by -56.06% since the most recent census, which recorded a population of 503 in 2020.
The average household income in Millsboro is $90,286 with a poverty rate of 18.21%. The median age in Millsboro is 37.1 years: 19.9 years for males, and 38.4 years for females.