Clinton County, IL Elevation & Topographic Map

Topographic elevation map of Clinton County, Illinois, shaded from 380 ft on the southwest side to 590 ft near the middle
Elevation
590 ft 180 m540 ft 165 m510 ft 155 m460 ft 140 m410 ft 125 m380 ft 115 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

Clinton County averages about 450 ft (140 m) above sea level across all its land. Its ground runs from 380 ft on the southwest side to 590 ft near the middle.

Average elevation
450 ft 140 m
all land inside the county
Highest
590 ft 180 m
near the middle
Lowest
380 ft 115 m
on the southwest side

Clinton County spans about 210 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 land450 ft140 m
Highest point
Inside the county, near the middle
590 ft180 m
Lowest point
Inside the county, on the southwest side
380 ft115 m

Elevation profile, south to north

15 mi south to north through Sugar Creek Township.

Topographic Map

Topographic elevation map of Clinton County, Illinois, shaded from 380 ft on the southwest side to 590 ft near the middle
County boundary (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
County in Illinois, United States
Population
37,087 2024 est.
Land area
473.9 sq mi + 29.2 sq mi water
Density
78 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. Fayette County550 ft
  2. Bond County540 ft
  3. Marion County530 ft
  4. Madison County520 ft
  5. Washington County480 ft
  6. St. Clair County470 ft
  7. Clinton County450 ft

Rankings by average elevation

Peaks and hills highest inside

  • Browns Hill550 ft
  • Corcoran Hill539 ft
  • Schaeffer Hill530 ft
  • Heimanns Hill420 ft
All 31 towns in Clinton County by typical elevation
  1. St. Rose500 ft
  2. St. Rose Township500 ft
  3. Centralia partly500 ft
  4. Wamac partly500 ft
  5. Trenton500 ft
  6. Brookside Township480 ft
  7. Sugar Creek Township480 ft
  8. Meridian Township470 ft
  9. Irishtown Township470 ft
  10. East Fork Township, Clinton County470 ft
  11. Aviston470 ft
  12. New Baden460 ft
  13. Wheatfield Township460 ft
  14. Keyesport partly460 ft
  15. Carlyle460 ft
  16. Carlyle Township460 ft
  17. Hoffman460 ft
  18. Beckemeyer450 ft
  19. Wade Township, Clinton County450 ft
  20. Breese450 ft
  21. Breese Township450 ft
  22. Lake Township450 ft
  23. Clement Township450 ft
  24. Huey450 ft
  25. Looking Glass Township450 ft
  26. Bartelso450 ft
  27. Santa Fe Township450 ft
  28. Albers440 ft
  29. Germantown430 ft
  30. Germantown Township430 ft
  31. Damiansville430 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.
  • Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 380 ft at 38.7329° N, 89.4018° W, is in such a hollow or patch and is not counted.
  • 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.