East Rocky Hill, NJ Elevation & Topographic Map
Elevation
330 ft 100 m250 ft 75 m200 ft 60 m120 ft 35 m41 ft 13 m0 ft 0 m
Contours every 100 ft, bold every 500 ft
USGS 3DEP · U.S. Census Bureau
How to use this mapviews, tools and data
- Elevation
- Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
- Satellite
- A 2016 satellite photo at 33 ft (10 m) detail; contours off.
- 3D
- Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
- Click or tap anywhere
- The exact elevation of that spot in ft and m.
- Measure
- Pick two points for the climb, descent and grade along a straight line.
- Area
- Fades everything outside the official CDP boundary (US Census).
Elevation Data
East Rocky Hill sits at about 220 ft (65 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
220 ft 65 m
most residents: 140–290 ft
Lowest
0 ft 0 m
on the southeast side
Highest
330 ft 100 m
on the east side
Average
180 ft 55 m
all land inside the CDP boundary
East Rocky Hill spans about 330 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 220 ft65 m |
| Highest point Inside the CDP boundary, on the east side | 330 ft100 m |
| Lowest point Inside the CDP boundary, on the southeast side | 0 ft0 m |
| Airport (TTN) FAA airport elevation, the highest point of its runways, 13 mi southwest of the CDP boundary | 213 ft65 m |
| Average of all land | 180 ft55 m |
Elevation profile, west to east
2.5 mi west to east through the middle of East Rocky Hill.
Topographic Map
- Location
- Unincorporated community (census-designated place) in Somerset County, New Jersey, United States
- Population
- 468 2020 Census
- Land area
- 4.2 sq mi + 0.1 sq mi water
- Density
- 112 per sq mi
- Coordinates
- 40.4037° N, 74.6182° W
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Piedmont
- Drains to
- Atlantic Ocean
- Airport
- Trenton Mercer (TTN) 213 ft
- ZIP codes 1
- 08540
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- East Rocky Hill220 ft
- Kendall Park200 ft
- Ten Mile Run190 ft
- Heathcote180 ft
- South Brunswick Township110 ft
- Griggstown110 ft
- Montgomery Township100 ft
- Kingston100 ft
- Rocky Hill99 ft
- Monmouth Junction95 ft
- Harlingen86 ft
Rankings by typical elevation
- Towns in New Jersey244th highest of 941
- Towns in Somerset County14th highest of 57
Peaks and hills nearest, by height
- Pheasant Hill450 ft
- Mount Rose418 ft
- Rocky Hill410 ft
- Tenmile Run Mountain320 ft
- Bunker Hill190 ft
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the CDP boundary, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
- Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census CDP boundary (TIGER, Jan 1 2026).
- Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, −77 ft at 40.3971° N, 74.6079° W, is in such a hollow or patch and is not counted.
- Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
- Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (FAA airport elevation, NGS survey heights) are shown as their publisher gives them.
- Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
- East Rocky Hill is an unincorporated community; figures cover the census-designated place, a statistical area.
- Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones; NOAA NGS survey heights. All public domain.