Coles County, IL Elevation & Topographic Map

Topographic elevation map of Coles County, Illinois, shaded from 540 ft on the south side to 790 ft on the southwest side
Elevation
790 ft 240 m730 ft 220 m700 ft 210 m640 ft 195 m570 ft 175 m540 ft 165 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

Coles County averages about 680 ft (205 m) above sea level across all its land. Its ground runs from 540 ft on the south side to 790 ft on the southwest side.

Average elevation
680 ft 205 m
all land inside the county
Highest
790 ft 240 m
on the southwest side
Lowest
540 ft 165 m
on the south side

Coles County spans about 250 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 land680 ft205 m
Highest point
Inside the county, on the southwest side
790 ft240 m
Lowest point
Inside the county, on the south side
540 ft165 m

Elevation profile, west to east

27 mi west to east through Charleston Township.

Topographic Map

Topographic elevation map of Coles County, Illinois, shaded from 540 ft on the south side to 790 ft on the southwest side
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Illinois, United States
Population
46,423 2024 est.
Land area
508.3 sq mi + 1.8 sq mi water
Density
91 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. Coles County680 ft
  2. Moultrie County670 ft
  3. Edgar County670 ft
  4. Douglas County660 ft
  5. Shelby County640 ft
  6. Cumberland County610 ft
  7. Clark County590 ft

Rankings by average elevation

All 20 towns in Coles County by typical elevation
  1. Lerna750 ft
  2. Mattoon Township720 ft
  3. Mattoon720 ft
  4. Lafayette Township710 ft
  5. Pleasant Grove Township710 ft
  6. Janesville690 ft
  7. Hutton Township690 ft
  8. Paradise Township690 ft
  9. Ashmore690 ft
  10. Ashmore Township680 ft
  11. Charleston680 ft
  12. Charleston Township680 ft
  13. Seven Hickory Township680 ft
  14. Humboldt Township670 ft
  15. Morgan Township670 ft
  16. Humboldt660 ft
  17. East Oakland Township650 ft
  18. North Okaw Township650 ft
  19. Oakland650 ft
  20. Trilla650 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, 530 ft at 39.3907° N, 88.1646° 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.