
Marlin
- County:
- Schuylkill County
- County Seat:
- No
- Area (mi²):
- 0.128
- State:
- Pennsylvania
Marlin is a CDP located in Schuylkill County, Pennsylvania. Marlin has a 2025 population of 266. Marlin is currently declining at a rate of -8.9% annually and its population has decreased by -31.62% since the most recent census, which recorded a population of 389 in 2020.
The average household income in Marlin is $139,427 with a poverty rate of 0%. The median age in Marlin is 26.3 years: 26.6 years for males, and 24.7 years for females.