Coos County, NH Elevation & Topographic Map

Topographic elevation map of Coos County, New Hampshire, shaded from 680 ft on the southeast side to 6,287 ft on Mount Washington
Elevation
6,290 ft 1,915 m4,890 ft 1,490 m4,180 ft 1,275 m2,780 ft 850 m1,380 ft 420 m680 ft 205 m
Zoom in for contour lines
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

Coos County averages about 1,880 ft (570 m) above sea level across all its land. Its ground runs from 680 ft on the southeast side to 6,287 ft on Mount Washington.

Average elevation
1,880 ft 570 m
all land inside the county
Highest
6,287 ft 1,916 m
on Mount Washington
Lowest
680 ft 205 m
on the southeast side

Coos County spans about 5,610 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 land1,880 ft570 m
Highest point
Inside the county, on Mount Washington (NGS survey height)
6,287 ft1,916 m
Lowest point
Inside the county, on the southeast side
680 ft205 m

Elevation profile, south to north

69 mi south to north through Berlin.

Topographic Map

Topographic elevation map of Coos County, New Hampshire, shaded from 680 ft on the southeast side to 6,287 ft on Mount Washington
County boundary (dashed) over shaded terrain, with contours every 500 ft (152 m).
Location
County in New Hampshire, United States
Population
31,094 2024 est.
Land area
1,794.6 sq mi + 35.7 sq mi water
Density
17 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
New England
Drains to
Atlantic Ocean 54%, Long Island Sound 46%
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Coos County1,880 ft
  2. Essex County, VT1,600 ft
  3. Grafton County1,510 ft
  4. Oxford County, ME1,190 ft
  5. Carroll County1,060 ft

Rankings by average elevation

Peaks and hills highest inside

  • Mount Washington6,287 ft
  • Carter Dome4,830 ft
  • Mount Cabot4,160 ft
  • Bunnell Mountain3,720 ft
  • Long Mountain3,660 ft
All 22 towns in Coos County by typical elevation
  1. Clarksville1,650 ft
  2. Pittsburg1,630 ft
  3. Errol1,590 ft
  4. Columbia1,540 ft
  5. Randolph1,530 ft
  6. Carroll1,440 ft
  7. Stewartstown1,340 ft
  8. Dummer1,260 ft
  9. Milan1,230 ft
  10. Jefferson1,160 ft
  11. Berlin1,130 ft
  12. West Stewartstown1,120 ft
  13. Colebrook1,070 ft
  14. Whitefield1,050 ft
  15. Stark1,040 ft
  16. Dalton1,020 ft
  17. Stratford970 ft
  18. Lancaster930 ft
  19. Northumberland900 ft
  20. Groveton890 ft
  21. Gorham820 ft
  22. Shelburne760 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 2 arc-second (≈200 ft, 62 m) grid, coarsened from 1 arc-second so the whole area fits one run. Land means the boundary minus Census area water (on this grid, water areas of at least half a cell).
  • Highest and lowest: the highest land cell, re-read at 1 arc-second around the 25 highest grid cells; 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, re-read at 1 arc-second around the 25 lowest grid cells; 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.