Somerset County, NJ Elevation & Topographic Map

Topographic elevation map of Somerset County, New Jersey, shaded from 0 ft on the south side to 850 ft on Mine Mountain
Elevation
850 ft 260 m640 ft 195 m530 ft 165 m320 ft 100 m110 ft 35 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

Somerset County averages about 200 ft (60 m) above sea level across all its land. Its ground runs from 0 ft on the south side to 850 ft on Mine Mountain.

Average elevation
200 ft 60 m
all land inside the county
Highest
850 ft 260 m
on Mine Mountain
Lowest
0 ft 0 m
on the south side

Somerset County spans about 850 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 land200 ft60 m
Highest point
Inside the county, on Mine Mountain (3DEP terrain model; no NGS survey height)
850 ft260 m
Lowest point
Inside the county, on the south side
0 ft0 m

Elevation profile, south to north

17 mi south to north through Franklin Township.

Topographic Map

Topographic elevation map of Somerset County, New Jersey, shaded from 0 ft on the south side to 850 ft on Mine Mountain
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in New Jersey, United States
Population
357,467 2024 est.
Land area
301.9 sq mi + 3.1 sq mi water
Density
1,184 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Piedmont 92%
Drains to
Atlantic Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Morris County640 ft
  2. Hunterdon County410 ft
  3. Somerset County200 ft
  4. Mercer County140 ft
  5. Union County120 ft
  6. Middlesex County81 ft

Rankings by average elevation

Peaks and hills highest inside

  • Mine Mountain850 ft
  • Sourland Mountain570 ft
  • Pheasant Hill450 ft
  • Tenmile Run Mountain320 ft
  • Bunker Hill190 ft
All 59 towns in Somerset County by typical elevation
  1. Bernardsville460 ft
  2. The Hills410 ft
  3. Warren Township370 ft
  4. Watchung320 ft
  5. Basking Ridge320 ft
  6. Martinsville300 ft
  7. Bernards Township300 ft
  8. Peapack and Gladstone300 ft
  9. Lyons280 ft
  10. Pottersville partly270 ft
  11. Liberty Corner250 ft
  12. Far Hills250 ft
  13. Pluckemin220 ft
  14. Bedminster Township220 ft
  15. East Rocky Hill220 ft
  16. Bedminster210 ft
  17. Ten Mile Run190 ft
  18. Lamington180 ft
  19. Neshanic160 ft
  20. Green Brook Township160 ft
  21. Green Knoll150 ft
  22. Branchburg Township140 ft
  23. Neshanic Station140 ft
  24. Bridgewater Center130 ft
  25. Franklin Park130 ft
  26. Flagtown130 ft
  27. Skillman130 ft
  28. Bridgewater Township120 ft
  29. Blawenburg120 ft
  30. Voorhees120 ft
  31. Clyde120 ft
  32. Middlebush110 ft
  33. Griggstown110 ft
  34. Six Mile Run110 ft
  35. Montgomery Township100 ft
  36. Kingston partly100 ft
  37. Bradley Gardens100 ft
  38. Hillsborough100 ft
  39. Pleasant Plains100 ft
  40. Hillsborough Township100 ft
  41. North Plainfield99 ft
  42. Rocky Hill99 ft
  43. Blackwells Mills98 ft
  44. Franklin Township98 ft
  45. Belle Mead94 ft
  46. Somerset88 ft
  47. Harlingen86 ft
  48. East Franklin85 ft
  49. Weston84 ft
  50. Franklin Center79 ft
  51. Finderne79 ft
  52. East Millstone77 ft
  53. Millstone72 ft
  54. Raritan71 ft
  55. Somerville68 ft
  56. Manville53 ft
  57. South Bound Brook48 ft
  58. Bound Brook45 ft
  59. Zarephath41 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, −77 ft at 40.3971° N, 74.6079° 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.