Blawnox
- County:
- Allegheny County
- County Seat:
- No
- Area (mi²):
- 0.296
- State:
- Pennsylvania
Blawnox is a borough located in Allegheny County, Pennsylvania. Blawnox has a 2026 population of 1,400. Blawnox is currently declining at a rate of -0.43% annually and its population has decreased by -3.71% since the most recent census, which recorded a population of 1,454 in 2020.
The median household income in Blawnox is $60,333 with a poverty rate of 16.68%. The median age in Blawnox is 53.8 years: 50.6 years for males, and 59.3 years for females. For every 100 females there are 107.6 males.