Saline County, IL Elevation & Topographic Map

Topographic elevation map of Saline County, Illinois, shaded from 340 ft on the east side to 1,000 ft on Horton Hill
Elevation
1,000 ft 305 m830 ft 255 m750 ft 230 m580 ft 180 m420 ft 130 m340 ft 105 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

Saline County averages about 420 ft (125 m) above sea level across all its land. Its ground runs from 340 ft on the east side to 1,000 ft on Horton Hill.

Average elevation
420 ft 125 m
all land inside the county
Highest
1,000 ft 305 m
on Horton Hill
Lowest
340 ft 105 m
on the east side

Saline County spans about 660 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 land420 ft125 m
Highest point
Inside the county, on Horton Hill (3DEP terrain model; no NGS survey height)
1,000 ft305 m
Lowest point
Inside the county, on the east side
340 ft105 m

Elevation profile, south to north

21 mi south to north through Harrisburg Township.

Topographic Map

Topographic elevation map of Saline County, Illinois, shaded from 340 ft on the east side to 1,000 ft on Horton Hill
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Illinois, United States
Population
22,826 2024 est.
Land area
380.0 sq mi + 6.9 sq mi water
Density
60 per sq mi
Time zone
Central UTC−6 / −5
Landform regions
Central Lowland 69%, Interior Low Plateaus 31%
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. Pope County510 ft
  2. Johnson County500 ft
  3. Hardin County480 ft
  4. Williamson County470 ft
  5. Hamilton County440 ft
  6. Franklin County440 ft
  7. Saline County420 ft
  8. Gallatin County390 ft

Rankings by average elevation

Peaks and hills highest inside

  • Horton Hill1,000 ft
  • Wamble Mountain940 ft
  • Cave Hill930 ft
  • Colbert Hill580 ft
All 20 towns in Saline County by typical elevation
  1. Mountain Township520 ft
  2. Tate Township460 ft
  3. Independence Township430 ft
  4. Long Branch Township430 ft
  5. Brushy Township430 ft
  6. Stonefort Township420 ft
  7. Stonefort partly420 ft
  8. Galatia Township420 ft
  9. Galatia420 ft
  10. Raleigh Township420 ft
  11. Raleigh410 ft
  12. East Eldorado Township400 ft
  13. Eldorado400 ft
  14. Carrier Mills Township400 ft
  15. Carrier Mills400 ft
  16. Harrisburg Township380 ft
  17. Harrisburg380 ft
  18. Muddy370 ft
  19. Rector Township370 ft
  20. Cottage Township370 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; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. 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, 200 ft at 37.6843° N, 88.5201° 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.