Butler
- County:
- Morris County
- County Seat:
- No
- Area (mi²):
- 2.034
- State:
- New Jersey
Butler is a borough located in Morris County, New Jersey. Butler has a 2026 population of 8,196. Butler is currently growing at a rate of 0.21% annually and its population has increased by 2.17% since the most recent census, which recorded a population of 8,022 in 2020.