
New Athens
- County:
- St. Clair County
- County Seat:
- No
- Area (mi²):
- 2.112
- State:
- Illinois
New Athens is a village located in St. Clair County, Illinois. New Athens has a 2025 population of 1,823. New Athens is currently declining at a rate of -1.35% annually and its population has decreased by -6.37% since the most recent census, which recorded a population of 1,947 in 2020.
The average household income in New Athens is $78,798 with a poverty rate of 9.81%. The median age in New Athens is 41.7 years: 40.3 years for males, and 41.9 years for females.