Middlesex County, NJ Elevation & Topographic Map
Elevation
290 ft 90 m220 ft 65 m180 ft 55 m110 ft 35 m36 ft 11 m0 ft 0 m
Contours every 500 ft, bold every 2,500 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.
- County area
- Fades everything outside the official county boundary (US Census).
Elevation Data
Middlesex County averages about 81 ft (25 m) above sea level across all its land. Its ground runs from sea level on Raritan Bay to 290 ft on the west side.
Average elevation
81 ft 25 m
all land inside the county
Highest
290 ft 90 m
on the west side
Lowest
0 ft 0 m
at sea level on Raritan Bay
Middlesex County spans about 290 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Average of all land | 81 ft25 m |
| Highest point Inside the county, on the west side | 290 ft90 m |
| Lowest point Where the land meets Raritan Bay | 0 ft0 m |
Elevation profile, south to north
23 mi south to north through Edison Township.
Topographic Map
- Location
- County in New Jersey, United States
- Population
- 890,119 2024 est.
- Land area
- 309.3 sq mi + 13.6 sq mi water
- Density
- 2,878 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform regions
- Coastal Plain 80%, Piedmont 20%
- Drains to
- Atlantic Ocean
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Somerset County200 ft
- Mercer County140 ft
- Union County120 ft
- Monmouth County100 ft
- Middlesex County81 ft
- Richmond County, NY70 ft
Rankings by average elevation
- Counties in New Jersey14th highest of 21
- Counties in the United States2,958th highest of 3,151
All 61 towns in Middlesex County by typical elevation
- Kendall Park200 ft
- Heathcote180 ft
- Whittingham160 ft
- Forsgate140 ft
- Concordia140 ft
- Regency at Monroe140 ft
- Rossmoor130 ft
- Fords130 ft
- Encore at Monroe130 ft
- Stonebridge130 ft
- The Ponds120 ft
- Clearbrook120 ft
- Monroe Township120 ft
- Rutgers University-Livingston Campus120 ft
- Menlo Park Terrace110 ft
- Madison Park110 ft
- Monroe Manor110 ft
- North Brunswick Township110 ft
- South Brunswick Township110 ft
- Renaissance at Monroe110 ft
- Hopelawn110 ft
- East Brunswick Township110 ft
- Cranbury110 ft
- Metuchen100 ft
- Dayton100 ft
- Kingston100 ft
- Rutgers University-Busch Campus100 ft
- Edison Township100 ft
- Cranbury Township99 ft
- Monmouth Junction95 ft
- Brownville91 ft
- Keasbey89 ft
- Plainsboro Township84 ft
- Princeton Meadows84 ft
- Deans84 ft
- Colonia83 ft
- South Plainfield79 ft
- Piscataway Township76 ft
- Iselin76 ft
- Plainsboro Center75 ft
- Highland Park73 ft
- New Brunswick73 ft
- Woodbridge Township71 ft
- Jamesburg69 ft
- Old Bridge Township66 ft
- Milltown63 ft
- Sayreville60 ft
- Dunellen55 ft
- Old Bridge50 ft
- South Amboy50 ft
- Perth Amboy49 ft
- Woodbridge49 ft
- Middlesex46 ft
- South River45 ft
- Avenel41 ft
- Helmetta39 ft
- Laurence Harbor35 ft
- Spotswood31 ft
- Port Reading22 ft
- Sewaren21 ft
- Carteret20 ft
How we measure
- Average: every USGS 3DEP bare-earth cell of land inside the Census county boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
- Highest and lowest: the highest land cell. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
- 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, −4 ft at 40.4751° N, 74.3665° W, is in such a hollow or patch and is not counted; this coastal land's lowest point is sea level on the coast.
- Nearby Places: neighboring counties and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the county with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it 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).
- Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the county.
- 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 (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.
- Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones. All public domain.