Gregory County, SD Elevation & Topographic Map

Topographic elevation map of Gregory County, South Dakota, shaded from 1,230 ft on the southeast side to 2,360 ft on the southwest side
Elevation
2,360 ft 720 m2,080 ft 635 m1,940 ft 590 m1,650 ft 505 m1,370 ft 420 m1,230 ft 375 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

Gregory County averages about 1,950 ft (595 m) above sea level across all its land. Its ground runs from 1,230 ft on the southeast side to 2,360 ft on the southwest side.

Average elevation
1,950 ft 595 m
all land inside the county
Highest
2,360 ft 720 m
on the southwest side
Lowest
1,230 ft 375 m
on the southeast side

Gregory County spans about 1,130 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 land1,950 ft595 m
Highest point
Inside the county, on the southwest side
2,360 ft720 m
Lowest point
Inside the county, on the southeast side
1,230 ft375 m

Elevation profile, west to east

33 mi west to east through Gregory.

Topographic Map

Topographic elevation map of Gregory County, South Dakota, shaded from 1,230 ft on the southeast side to 2,360 ft on the southwest side
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in South Dakota, United States
Population
4,110 2024 est.
Land area
1,014.9 sq mi + 38.6 sq mi water
Density
4.0 per sq mi
Time zone
Central UTC−6 / −5
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. Keya Paha County, NE2,270 ft
  2. Tripp County2,090 ft
  3. Gregory County1,950 ft
  4. Lyman County1,780 ft
  5. Boyd County, NE1,740 ft
  6. Charles Mix County1,560 ft

Rankings by average elevation

Peaks and hills highest inside

  • Buffalo Buttes2,210 ft
  • The Burnt Rock (historical)2,050 ft
  • Devils Grave Hill1,960 ft
  • Scalp Butte1,890 ft
  • Red Rock1,800 ft
All 15 towns in Gregory County by typical elevation
  1. Dallas2,220 ft
  2. Burke2,190 ft
  3. Gregory2,170 ft
  4. Herrick2,160 ft
  5. Edens Township2,120 ft
  6. Jones Township2,070 ft
  7. St. Charles2,070 ft
  8. Pleasant Valley Township, Gregory County1,980 ft
  9. Bonesteel1,960 ft
  10. Fairfax1,940 ft
  11. Dixon Township, Gregory County1,930 ft
  12. Fairfax Township1,910 ft
  13. Schriever Township1,870 ft
  14. Star Valley Township1,820 ft
  15. Landing Creek Township1,770 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.