Mercer County, NJ Elevation & Topographic Map

Topographic elevation map of Mercer County, New Jersey, shaded from 0 ft on the south side to 480 ft on Strawberry Hill
Elevation
480 ft 145 m360 ft 110 m300 ft 90 m180 ft 55 m60 ft 18 m0 ft 0 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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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

Mercer County averages about 140 ft (40 m) above sea level across all its land. Its ground runs from 0 ft on the south side to 480 ft on Strawberry Hill.

Average elevation
140 ft 40 m
all land inside the county
Highest
480 ft 145 m
on Strawberry Hill
Lowest
0 ft 0 m
on the south side

Mercer County spans about 480 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.

FigureElevation
Average of all land140 ft40 m
Highest point
Inside the county, on Strawberry Hill (3DEP terrain model; no NGS survey height)
480 ft145 m
Lowest point
Inside the county, on the south side
0 ft0 m

Elevation profile, south to north

14 mi south to north through Hamilton Township.

Topographic Map

Topographic elevation map of Mercer County, New Jersey, shaded from 0 ft on the south side to 480 ft on Strawberry Hill
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in New Jersey, United States
Population
392,138 2024 est.
Land area
224.5 sq mi + 4.4 sq mi water
Density
1,747 per sq mi
Time zone
Eastern UTC−5 / −4
Landform regions
Coastal Plain 68%, Piedmont 33%
Drains to
Atlantic Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Hunterdon County410 ft
  2. Bucks County, PA340 ft
  3. Somerset County200 ft
  4. Mercer County140 ft
  5. Monmouth County100 ft
  6. Middlesex County81 ft
  7. Burlington County69 ft

Rankings by average elevation

Peaks and hills highest inside

  • Strawberry Hill480 ft
  • Baldpate Mountain, Mercer County480 ft
  • Pennington Mountain450 ft
  • Mount Canoe430 ft
  • Mount Rose418 ft
All 25 towns in Mercer County by typical elevation
  1. Pennington200 ft
  2. Hopewell200 ft
  3. Hopewell Township190 ft
  4. Lawrenceville180 ft
  5. Princeton170 ft
  6. Washington Crossing150 ft
  7. The College of New Jersey120 ft
  8. Ewing Township120 ft
  9. Twin Rivers110 ft
  10. Robbinsville Center110 ft
  11. East Windsor Township110 ft
  12. Hightstown100 ft
  13. Robbinsville Township100 ft
  14. Titusville98 ft
  15. Windsor97 ft
  16. Princeton Junction97 ft
  17. Lawrence Township97 ft
  18. Hamilton Square94 ft
  19. West Windsor Township90 ft
  20. White Horse82 ft
  21. Mercerville75 ft
  22. Hamilton Township65 ft
  23. Yardville60 ft
  24. Trenton55 ft
  25. Groveville50 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; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. 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, −120 ft at 40.3249° N, 74.9093° W, is in such a hollow or patch and is not counted.
  • 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.