Yankton County, SD Elevation & Topographic Map

Topographic elevation map of Yankton County, South Dakota, shaded from 1,140 ft on the southeast side to 1,680 ft on the northeast side
Elevation
1,680 ft 515 m1,550 ft 470 m1,480 ft 450 m1,340 ft 410 m1,210 ft 370 m1,140 ft 345 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

Yankton County averages about 1,330 ft (405 m) above sea level across all its land. Its ground runs from 1,140 ft on the southeast side to 1,680 ft on the northeast side.

Average elevation
1,330 ft 405 m
all land inside the county
Highest
1,680 ft 515 m
on the northeast side
Lowest
1,140 ft 345 m
on the southeast side

Yankton County spans about 540 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 land1,330 ft405 m
Highest point
Inside the county, on the northeast side
1,680 ft515 m
Lowest point
Inside the county, on the southeast side
1,140 ft345 m

Elevation profile, west to east

24 mi west to east through Yankton.

Topographic Map

Topographic elevation map of Yankton County, South Dakota, shaded from 1,140 ft on the southeast side to 1,680 ft on the northeast side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in South Dakota, United States
Population
23,509 2024 est.
Land area
521.2 sq mi + 11.1 sq mi water
Density
45 per sq mi
Time zone
Central UTC−6 / −5
Landform region
Central Lowland
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. Knox County, NE1,610 ft
  2. Cedar County, NE1,490 ft
  3. Bon Homme County1,440 ft
  4. Hutchinson County1,390 ft
  5. Turner County1,380 ft
  6. Yankton County1,330 ft
  7. Clay County1,230 ft

Rankings by average elevation

All 17 towns in Yankton County by typical elevation
  1. Turkey Valley Township1,470 ft
  2. Mayfield Township1,420 ft
  3. Irene partly1,390 ft
  4. Lesterville1,390 ft
  5. Marindahl Township1,380 ft
  6. Utica1,370 ft
  7. Utica Township1,310 ft
  8. Walshtown Township1,310 ft
  9. Yankton1,240 ft
  10. Mission Hill Township1,240 ft
  11. Volin Township1,210 ft
  12. Jamesville Township1,210 ft
  13. Volin1,210 ft
  14. Jamesville Colony1,190 ft
  15. Mission Hill1,180 ft
  16. Gayville1,170 ft
  17. Gayville Township1,160 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.