Summit
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 5.994
- State:
- New Jersey
Summit is a city located in Union County, New Jersey. Summit has a 2026 population of 23,102. Summit is currently growing at a rate of 1.72% annually and its population has increased by 2.05% since the most recent census, which recorded a population of 22,639 in 2020.