
Bethlehem
- County:
- Naugatuck Valley Planning Region
- County Seat:
- No
- Area (mi²):
- 19.375
- State:
- Connecticut
Bethlehem is located in Naugatuck Valley Planning Region, Connecticut. Bethlehem has a 2025 population of 3,445. Bethlehem is currently growing at a rate of 0.35% annually and its population has increased by 1.71% since the most recent census, which recorded a population of 3,387 in 2020.
The average household income in Bethlehem is $137,925 with a poverty rate of 8.22%. The median age in Bethlehem is 45.4 years: 45.8 years for males, and 45 years for females.