Geographic reference
Mountainside borough, New Jersey
Mountainside borough is a Census place in New Jersey.
Reference details
- State
- New Jersey (NJ)
- Census GEOID
- 3448510
- Land area
- 10.351 km²
- Water area
- 0.117 km²
- Representative point
- 40.680722, -74.360292
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.