Kenilworth
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 2.147
- State:
- New Jersey
Kenilworth is a borough located in Union County, New Jersey. Kenilworth has a 2026 population of 8,527. Kenilworth is currently growing at a rate of 1.58% annually and its population has increased by 1.61% since the most recent census, which recorded a population of 8,392 in 2020.