Salem Township, Knox County, IL Elevation & Topographic Map
Elevation
760 ft 230 m710 ft 220 m690 ft 210 m650 ft 195 m600 ft 180 m580 ft 175 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
Salem Township, Knox County sits at about 670 ft (205 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
670 ft 205 m
most residents: 640–680 ft
Lowest
580 ft 175 m
on the northwest side
Highest
760 ft 230 m
on the south side
Average
670 ft 205 m
all land inside township boundaries
Salem Township, Knox County spans about 180 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 | 670 ft205 m |
| Highest point Inside township boundaries, on the south side | 760 ft230 m |
| Lowest point Inside township boundaries, on the northwest side | 580 ft175 m |
| Average of all land | 670 ft205 m |
Elevation profile, south to north
6.0 mi south to north through the middle of Salem Township, Knox County.
Topographic Map
- Location
- Township in Knox County, Illinois, United States
- Population
- 922 2024 est.
- Land area
- 35.8 sq mi + 0.6 sq mi water
- Density
- 26 per sq mi
- Coordinates
- 40.7760° N, 90.0199° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Spoon River → Illinois River → Mississippi River → Gulf of America
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Sources: U.S. Census Bureau, USGS
Nearby Places
Nearby towns by typical elevation
- Farmington750 ft
- Farmington Township740 ft
- Brimfield710 ft
- Brimfield Township710 ft
- Elba Township670 ft
- Yates City670 ft
- Salem Township, Knox County670 ft
- Elmwood Township640 ft
- Elmwood630 ft
- Maquon630 ft
- Maquon Township630 ft
Rankings by typical elevation
- Towns in Illinois1,195th highest of 2,872
- Towns in Knox County32nd highest of 36
Peaks and hills nearest, by height
- Haney Hill760 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).
- 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); BTS time zones. All public domain.