Piatt County, IL Elevation & Topographic Map

Topographic elevation map of Piatt County, Illinois, shaded from 620 ft on the southwest side to 810 ft on the northeast side
Elevation
810 ft 245 m760 ft 230 m740 ft 225 m690 ft 210 m640 ft 195 m620 ft 190 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

Piatt County averages about 700 ft (210 m) above sea level across all its land. Its ground runs from 620 ft on the southwest side to 810 ft on the northeast side.

Average elevation
700 ft 210 m
all land inside the county
Highest
810 ft 245 m
on the northeast side
Lowest
620 ft 190 m
on the southwest side

Piatt County spans about 190 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 land700 ft210 m
Highest point
Inside the county, on the northeast side
810 ft245 m
Lowest point
Inside the county, on the southwest side
620 ft190 m

Elevation profile, west to east

15 mi west to east through Monticello Township.

Topographic Map

Topographic elevation map of Piatt County, Illinois, shaded from 620 ft on the southwest side to 810 ft on the northeast side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Illinois, United States
Population
16,628 2024 est.
Land area
439.2 sq mi + 0.3 sq mi water
Density
38 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. McLean County770 ft
  2. De Witt County720 ft
  3. Champaign County710 ft
  4. Piatt County700 ft
  5. Macon County670 ft
  6. Moultrie County670 ft
  7. Douglas County660 ft

Rankings by average elevation

All 18 towns in Piatt County by typical elevation
  1. Cerro Gordo740 ft
  2. Cerro Gordo Township730 ft
  3. Mansfield730 ft
  4. Blue Ridge Township730 ft
  5. De Land700 ft
  6. LaPlace700 ft
  7. White Heath700 ft
  8. Goose Creek Township700 ft
  9. Cisco690 ft
  10. Sangamon Township680 ft
  11. Willow Branch Township680 ft
  12. Bement680 ft
  13. Bement Township680 ft
  14. Hammond670 ft
  15. Monticello670 ft
  16. Unity Township670 ft
  17. Monticello Township670 ft
  18. Atwood670 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.