Sully County, SD Elevation & Topographic Map
Elevation
2,080 ft 635 m1,960 ft 595 m1,900 ft 580 m1,780 ft 540 m1,660 ft 505 m1,600 ft 485 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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
Sully County averages about 1,810 ft (550 m) above sea level across all its land. Its ground runs from 1,600 ft on the west side to 2,080 ft on the west side.
Average elevation
1,810 ft 550 m
all land inside the county
Highest
2,080 ft 635 m
on the west side
Lowest
1,600 ft 485 m
on the west side
Sully County spans about 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.
| Figure | Elevation |
|---|---|
| Average of all land | 1,810 ft550 m |
| Highest point Inside the county, on the west side | 2,080 ft635 m |
| Lowest point Inside the county, on the west side | 1,600 ft485 m |
Elevation profile, west to east
46 mi west to east through Onida.
Topographic Map
- Location
- County in South Dakota, United States
- Population
- 1,468 2024 est.
- Land area
- 1,006.7 sq mi + 63.5 sq mi water
- Density
- 1.5 per sq mi
- Time zone
- Central UTC−6 / −5
- Landform region
- Great Plains
- Drains to
- Gulf of America
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Dewey County2,010 ft
- Potter County1,950 ft
- Stanley County1,890 ft
- Hyde County1,860 ft
- Sully County1,810 ft
- Hughes County1,730 ft
Rankings by average elevation
- Counties in South Dakota27th highest of 66
- Counties in the United States685th highest of 3,151
Peaks and hills highest inside
- Artichoke Butte2,012 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.