
Springfield township
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 29.512
- State:
- New Jersey
Springfield township is located in Union County, New Jersey. Springfield township has a 2025 population of 3,263. Springfield township is currently growing at a rate of 0.18% annually and its population has increased by 0.77% since the most recent census, which recorded a population of 3,238 in 2020.
The average household income in Springfield township is $157,957 with a poverty rate of 6.8%. The median age in Springfield township is 44.5 years: 43.3 years for males, and 46 years for females.