Troy Grove Township, IL Elevation & Topographic Map
Elevation
800 ft 245 m750 ft 230 m730 ft 225 m680 ft 210 m640 ft 195 m610 ft 185 m
Contours every 200 ft, bold every 1,000 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.
- Township area
- Fades everything outside the official township boundaries (US Census).
Elevation Data
Troy Grove Township sits at about 720 ft (220 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
720 ft 220 m
most residents: 660–740 ft
Lowest
610 ft 185 m
on the south side
Highest
800 ft 245 m
on the northwest side
Average
700 ft 210 m
all land inside township boundaries
Troy Grove Township spans about 190 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 720 ft220 m |
| Highest point Inside township boundaries, on the northwest side | 800 ft245 m |
| Lowest point Inside township boundaries, on the south side | 610 ft185 m |
| Town center USGS map point for Troy Grove Township | 670 ft205 m |
| Airport (VYS) FAA airport elevation, the highest point of its runways, 7.2 mi southwest of the township boundaries | 654 ft199 m |
| Average of all land | 700 ft210 m |
Elevation profile, south to north
5.8 mi south to north through the town center.
Topographic Map
- Location
- Township in LaSalle County, Illinois, United States
- Population
- 1,270 2024 est.
- Land area
- 35.7 sq mi
- Density
- 36 per sq mi
- Coordinates
- 41.4678° N, 89.0831° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Illinois River → Mississippi River → Gulf of America
- Airport
- Illinois Valley Regional-Walter A Duncan Field (VYS) 654 ft
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Clarion Township800 ft
- Mendota Township750 ft
- Mendota740 ft
- Troy Grove Township720 ft
- Westfield Township690 ft
- Cherry680 ft
- Ophir Township670 ft
- Triumph670 ft
- Troy Grove660 ft
- Dimmick Township640 ft
- Waltham Township630 ft
Rankings by typical elevation
- Towns in Illinois712th highest of 2,872
- Towns in LaSalle County3rd highest of 67
Peaks and hills nearest, by height
- Starved Rock660 ft
- Buffalo Rock570 ft
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the township boundaries, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
- Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census township boundaries (TIGER, Jan 1 2026).
- 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 41.4785° N, 89.0643° W, is in such a hollow or patch and is not counted.
- Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
- 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 (FAA airport elevation, 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 (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas); FAA airport data; BTS time zones. All public domain.