Tazewell County, IL Elevation & Topographic Map

Topographic elevation map of Tazewell County, Illinois, shaded from 430 ft on the west side to 850 ft on the northeast side
Elevation
850 ft 260 m740 ft 225 m690 ft 210 m580 ft 180 m480 ft 145 m420 ft 130 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

Tazewell County averages about 620 ft (190 m) above sea level across all its land. Its ground runs from 430 ft on the west side to 850 ft on the northeast side.

Average elevation
620 ft 190 m
all land inside the county
Highest
850 ft 260 m
on the northeast side
Lowest
430 ft 130 m
on the west side

Tazewell County spans about 420 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 land620 ft190 m
Highest point
Inside the county, on the northeast side
850 ft260 m
Lowest point
Inside the county, on the west side
430 ft130 m

Elevation profile, west to east

20 mi west to east through Pekin.

Topographic Map

Topographic elevation map of Tazewell County, Illinois, shaded from 430 ft on the west side to 850 ft on the northeast side
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Illinois, United States
Population
129,821 2024 est.
Land area
646.5 sq mi + 11.5 sq mi water
Density
201 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. Woodford County720 ft
  3. Peoria County650 ft
  4. Tazewell County620 ft
  5. Fulton County600 ft
  6. Logan County600 ft
  7. Mason County510 ft

Rankings by average elevation

Peaks and hills highest inside

  • The Mound, Tazewell County530 ft
  • Little Mound490 ft
All 37 towns in Tazewell County by typical elevation
  1. Washington760 ft
  2. Deer Creek760 ft
  3. Washington Township750 ft
  4. Deer Creek Township750 ft
  5. Goodfield partly740 ft
  6. Morton Township710 ft
  7. Morton710 ft
  8. Heritage Lake690 ft
  9. Groveland Township680 ft
  10. Mackinaw Township680 ft
  11. East Peoria670 ft
  12. Mackinaw670 ft
  13. Boynton Township670 ft
  14. Creve Coeur660 ft
  15. Tremont Township660 ft
  16. Tremont650 ft
  17. Elm Grove Township650 ft
  18. Hopedale640 ft
  19. Little Mackinaw Township640 ft
  20. Minier640 ft
  21. Hopedale Township630 ft
  22. Marquette Heights630 ft
  23. Hittle Township630 ft
  24. Armington630 ft
  25. Dillon Township620 ft
  26. Fondulac Township620 ft
  27. Delavan600 ft
  28. Delavan Township600 ft
  29. Green Valley540 ft
  30. Sand Prairie Township530 ft
  31. Cincinnati Township530 ft
  32. Pekin530 ft
  33. Malone Township520 ft
  34. Pekin Township520 ft
  35. South Pekin510 ft
  36. Spring Lake Township490 ft
  37. North Pekin460 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, 420 ft at 40.4396° N, 89.9087° 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.