
Etna
- County:
- Allegheny County
- County Seat:
- No
- Area (mi²):
- 0.736
- State:
- Pennsylvania
Etna is a borough located in Allegheny County, Pennsylvania. Etna has a 2025 population of 3,227. Etna is currently declining at a rate of -1.25% annually and its population has decreased by -5.97% since the most recent census, which recorded a population of 3,432 in 2020.
The average household income in Etna is $64,867 with a poverty rate of 15.84%. The median age in Etna is 43 years: 41.3 years for males, and 49.2 years for females.