Sanilac County, MI Elevation & Topographic Map

Topographic elevation map of Sanilac County, Michigan, shaded from 580 ft on the north side to 910 ft on the west side
Elevation
910 ft 275 m820 ft 250 m780 ft 240 m700 ft 215 m620 ft 190 m580 ft 175 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

Sanilac County averages about 770 ft (235 m) above sea level across all its land. Its ground runs from 580 ft on the north side to 910 ft on the west side.

Average elevation
770 ft 235 m
all land inside the county
Highest
910 ft 275 m
on the west side
Lowest
580 ft 175 m
on the north side

Sanilac County spans about 330 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 land770 ft235 m
Highest point
Inside the county, on the west side
910 ft275 m
Lowest point
Inside the county, on the north side
580 ft175 m

Elevation profile, west to east

36 mi west to east through Lexington Township.

Topographic Map

Topographic elevation map of Sanilac County, Michigan, shaded from 580 ft on the north side to 910 ft on the west side
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Michigan, United States
Population
40,293 2024 est.
Land area
962.6 sq mi + 627.4 sq mi water
Density
42 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Central Lowland
Drains to
Great Lakes
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Lapeer County870 ft
  2. Sanilac County770 ft
  3. Tuscola County710 ft
  4. St. Clair County700 ft
  5. Huron County690 ft

Rankings by average elevation

All 40 towns in Sanilac County by typical elevation
  1. Marlette840 ft
  2. Minden City830 ft
  3. Minden Township820 ft
  4. Melvin820 ft
  5. Deckerville820 ft
  6. Marion Township, Sanilac County820 ft
  7. Brown City810 ft
  8. Marlette Township810 ft
  9. Speaker Township810 ft
  10. Maple Valley Township, Sanilac County800 ft
  11. Carsonville790 ft
  12. Bridgehampton Township790 ft
  13. Flynn Township790 ft
  14. Elmer Township, Sanilac County780 ft
  15. Austin Township, Sanilac County780 ft
  16. Argyle Township780 ft
  17. Peck780 ft
  18. Wheatland Township, Sanilac County780 ft
  19. Moore Township780 ft
  20. Elk Township770 ft
  21. Snover770 ft
  22. Sandusky770 ft
  23. Custer Township, Sanilac County770 ft
  24. Lamotte Township770 ft
  25. Watertown Township, Sanilac County770 ft
  26. Evergreen Township, Sanilac County770 ft
  27. Buel Township760 ft
  28. Washington Township, Sanilac County760 ft
  29. Greenleaf Township760 ft
  30. Fremont Township, Sanilac County750 ft
  31. Applegate750 ft
  32. Croswell730 ft
  33. Delaware Township700 ft
  34. Lexington Township650 ft
  35. Worth Township650 ft
  36. Forester Township650 ft
  37. Forestville640 ft
  38. Sanilac Township640 ft
  39. Lexington630 ft
  40. Port Sanilac620 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.