Will County, IL Elevation & Topographic Map
Elevation
840 ft 255 m750 ft 230 m710 ft 215 m620 ft 190 m530 ft 160 m490 ft 150 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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
Will County averages about 660 ft (200 m) above sea level across all its land. Its ground runs from 490 ft on the northwest side to 840 ft on the southeast side.
Average elevation
660 ft 200 m
all land inside the county
Highest
840 ft 255 m
on the southeast side
Lowest
490 ft 150 m
on the northwest side
Will County spans about 350 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.
| Figure | Elevation |
|---|---|
| Average of all land | 660 ft200 m |
| Highest point Inside the county, on the southeast side | 840 ft255 m |
| Lowest point Inside the county, on the northwest side | 490 ft150 m |
Elevation profile, south to north
36 mi south to north through Joliet.
Topographic Map
- Location
- County in Illinois, United States
- Population
- 708,583 2024 est.
- Land area
- 835.9 sq mi + 13.3 sq mi water
- Density
- 848 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
- DuPage County730 ft
- Will County660 ft
- Cook County660 ft
- Lake County, IN660 ft
- Kendall County650 ft
- Kankakee County650 ft
- Grundy County590 ft
Rankings by average elevation
- Counties in Illinois35th highest of 102
- Counties in the United States2,107th highest of 3,151
All 81 towns in Will County by typical elevation
- Monee790 ft
- Monee Township780 ft
- University Park770 ft
- Green Garden Township750 ft
- Goodenow750 ft
- Woodridge partly750 ft
- Frankfort740 ft
- Beecher740 ft
- Homer Glen730 ft
- Washington Township, Will County730 ft
- Arbury Hills730 ft
- Eagle Lake730 ft
- Lockport Heights730 ft
- Lemont partly730 ft
- Homer Township720 ft
- Andres720 ft
- Crete720 ft
- Crete Township720 ft
- Frankfort Township720 ft
- Will Township710 ft
- Park Forest partly710 ft
- Steger710 ft
- Mokena710 ft
- Frankfort Square710 ft
- Peotone710 ft
- Peotone Township710 ft
- Tinley Park partly700 ft
- Orland Park partly700 ft
- Plum Valley700 ft
- Naperville partly700 ft
- Aurora partly700 ft
- Willowbrook, Will County690 ft
- Bolingbrook690 ft
- Lockport690 ft
- Marley690 ft
- Manhattan Township690 ft
- New Lenox Township690 ft
- New Lenox690 ft
- Du Page Township680 ft
- Manhattan680 ft
- Wilton Township670 ft
- Wheatland Township670 ft
- Wilton Center670 ft
- Bonnie Brae660 ft
- Ridgewood650 ft
- Elwood640 ft
- Lockport Township640 ft
- Jackson Township640 ft
- Symerton640 ft
- Fairmont640 ft
- Joliet Township630 ft
- Plainfield630 ft
- Crest Hill630 ft
- Ingalls Park630 ft
- Romeoville630 ft
- Preston Heights630 ft
- Joliet620 ft
- Plainfield Township620 ft
- Sunnyland620 ft
- Shorewood610 ft
- Troy Township610 ft
- Minooka partly610 ft
- Crystal Lawns610 ft
- Channahon590 ft
- Godley590 ft
- Custer Township590 ft
- Rockdale580 ft
- Reed Township570 ft
- Braidwood570 ft
- Rest Haven570 ft
- Florence Township, Will County570 ft
- Wesley Township570 ft
- Coal City partly570 ft
- Ritchie560 ft
- Diamond partly560 ft
- Lakewood Shores560 ft
- Custer Park560 ft
- Wilmington560 ft
- Wilmington Township560 ft
- Channahon Township540 ft
- Lorenzo530 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 41.5026° N, 88.1421° 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.