
Monaca
- County:
- Beaver County
- County Seat:
- No
- Area (mi²):
- 2.027
- State:
- Pennsylvania
Monaca is a borough located in Beaver County, Pennsylvania. Monaca has a 2025 population of 5,405. Monaca is currently declining at a rate of -0.75% annually and its population has decreased by -3.65% since the most recent census, which recorded a population of 5,610 in 2020.
The average household income in Monaca is $80,673 with a poverty rate of 15.93%. The median age in Monaca is 39 years: 40.8 years for males, and 36.9 years for females.