Sussex County, NJ Elevation & Topographic Map

Topographic elevation map of Sussex County, New Jersey, shaded from 320 ft on the west side to 1,800 ft on Kittatinny Mountain
Elevation
1,800 ft 550 m1,430 ft 435 m1,240 ft 380 m880 ft 265 m510 ft 155 m320 ft 100 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

Sussex County averages about 790 ft (240 m) above sea level across all its land. Its ground runs from 320 ft on the west side to 1,800 ft on Kittatinny Mountain.

Average elevation
790 ft 240 m
all land inside the county
Highest
1,800 ft 550 m
on Kittatinny Mountain
Lowest
320 ft 100 m
on the west side

Sussex County spans about 1,480 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 land790 ft240 m
Highest point
Inside the county, on Kittatinny Mountain
1,800 ft550 m
Lowest point
Inside the county, on the west side
320 ft100 m

Elevation profile, west to east

26 mi west to east through Vernon Township.

Topographic Map

Topographic elevation map of Sussex County, New Jersey, shaded from 320 ft on the west side to 1,800 ft on Kittatinny Mountain
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in New Jersey, United States
Population
147,444 2024 est.
Land area
518.5 sq mi + 16.9 sq mi water
Density
284 per sq mi
Time zone
Eastern UTC−5 / −4
Landform regions
Valley and Ridge 81%, New England 19%
Drains to
Atlantic Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Pike County, PA1,260 ft
  2. Monroe County, PA1,240 ft
  3. Sussex County790 ft
  4. Morris County640 ft
  5. Orange County, NY630 ft
  6. Warren County610 ft
  7. Passaic County600 ft

Rankings by average elevation

Peaks and hills highest inside

  • Kittatinny Mountain1,797 ft
  • Sunrise Mountain1,653 ft
  • Rattlesnake Mountain1,490 ft
  • Wawayanda Mountain1,470 ft
  • Maple Hill1,260 ft
All 33 towns in Sussex County by typical elevation
  1. Highland Lakes1,280 ft
  2. Upper Greenwood Lake partly1,140 ft
  3. Hopatcong1,030 ft
  4. Stanhope910 ft
  5. Sparta Township900 ft
  6. Crandon Lakes890 ft
  7. Vernon Township880 ft
  8. Lake Mohawk850 ft
  9. Byram Township810 ft
  10. Frankford Township810 ft
  11. Byram Center730 ft
  12. Fredon Township730 ft
  13. Sandyston Township730 ft
  14. Layton710 ft
  15. Walpack Township710 ft
  16. Wantage Township670 ft
  17. Montague Township670 ft
  18. Andover Township670 ft
  19. Andover670 ft
  20. Ogdensburg670 ft
  21. Vernon Center650 ft
  22. Hampton Township650 ft
  23. Newton630 ft
  24. Hardyston Township630 ft
  25. Franklin620 ft
  26. Stillwater Township620 ft
  27. Green Township620 ft
  28. Lafayette Township600 ft
  29. Branchville560 ft
  30. Ross Corner510 ft
  31. Hamburg500 ft
  32. Sussex470 ft
  33. Vernon Valley440 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.
  • 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.