Fergus County, MT Elevation & Topographic Map

Topographic elevation map of Fergus County, Montana, shaded from 2,250 ft on the northeast side to 8,690 ft on Greathouse Peak
Elevation
8,690 ft 2,650 m7,080 ft 2,155 m6,270 ft 1,910 m4,660 ft 1,420 m3,050 ft 930 m2,250 ft 685 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

Fergus County averages about 3,800 ft (1,160 m) above sea level across all its land. Its ground runs from 2,250 ft on the northeast side to 8,690 ft on Greathouse Peak.

Average elevation
3,800 ft 1,160 m
all land inside the county
Highest
8,690 ft 2,650 m
on Greathouse Peak
Lowest
2,250 ft 685 m
on the northeast side

Fergus County spans about 6,440 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 land3,800 ft1,160 m
Highest point
Inside the county, on Greathouse Peak (3DEP terrain model; no NGS survey height)
8,690 ft2,650 m
Lowest point
Inside the county, on the northeast side
2,250 ft685 m

Elevation profile, south to north

71 mi south to north through Lewistown.

Topographic Map

Topographic elevation map of Fergus County, Montana, shaded from 2,250 ft on the northeast side to 8,690 ft on Greathouse Peak
County boundary (dashed) over shaded terrain, with contours every 500 ft (152 m).
Location
County in Montana, United States
Population
11,862 2024 est.
Land area
4,339.3 sq mi + 10.7 sq mi water
Density
2.7 per sq mi
Time zone
Mountain UTC−7 / −6
Landform region
Great Plains
Drains to
Gulf of America
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Judith Basin County5,050 ft
  2. Wheatland County4,830 ft
  3. Golden Valley County4,190 ft
  4. Fergus County3,800 ft
  5. Musselshell County3,520 ft
  6. Chouteau County3,250 ft
  7. Blaine County3,070 ft
  8. Petroleum County2,960 ft
  9. Phillips County2,660 ft

Rankings by average elevation

Peaks and hills highest inside

  • Greathouse Peak8,690 ft
  • Old Baldy8,640 ft
  • West Peak, Fergus County8,180 ft
  • Judith Peak6,420 ft
  • Black Butte5,550 ft
All 17 towns in Fergus County by typical elevation
  1. Warm Spring Creek4,490 ft
  2. Moore4,170 ft
  3. Hilger4,070 ft
  4. Brooks3,960 ft
  5. Lewistown3,960 ft
  6. Lewistown Heights3,950 ft
  7. King Ranch Colony3,940 ft
  8. Coffee Creek3,610 ft
  9. Denton3,600 ft
  10. Ayers Ranch Colony3,600 ft
  11. Fords Creek Colony3,570 ft
  12. Danvers3,550 ft
  13. Spring Creek Colony3,530 ft
  14. Roy3,490 ft
  15. Grass Range3,480 ft
  16. Deerfield Colony3,460 ft
  17. Winifred3,270 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.