Rahway
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 3.896
- State:
- New Jersey
Rahway is a city located in Union County, New Jersey. Rahway has a 2026 population of 30,763. Rahway is currently growing at a rate of 1.52% annually and its population has increased by 3.68% since the most recent census, which recorded a population of 29,671 in 2020.