Harrisburg, IL Elevation & Topographic Map

Topographic elevation map of Harrisburg, Illinois, shaded from 340 ft on the northeast side to 430 ft on the southwest side
Elevation
430 ft 130 m410 ft 125 m400 ft 120 m380 ft 115 m360 ft 110 m340 ft 105 m
Contours every 100 ft, bold every 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.
City area
Fades everything outside the official city limits (US Census).

Elevation Data

Harrisburg sits at about 380 ft (115 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
380 ft 115 m
most residents: 360–400 ft
Lowest
340 ft 105 m
on the northeast side
Highest
430 ft 130 m
on the southwest side
Average
380 ft 115 m
all land inside city limits

Harrisburg spans about 90 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.

FigureElevation
Typical
Where people live: half of residents higher, half lower
380 ft115 m
Highest point
Inside city limits, on the southwest side
430 ft130 m
Lowest point
Inside city limits, on the northeast side
340 ft105 m
Town center
USGS map point for Harrisburg
390 ft120 m
Airport (HSB)
FAA airport elevation, the highest point of its runways, 3.5 mi north of the city limits
398 ft121 m
Average of all land380 ft115 m

Elevation profile, west to east

3.1 mi west to east through the town center.

Topographic Map

Topographic elevation map of Harrisburg, Illinois, shaded from 340 ft on the northeast side to 430 ft on the southwest side
City limits (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
City in Saline County, Illinois, United States
Population
7,937 2024 est.
Land area
6.6 sq mi + 0.2 sq mi water
Density
1,200 per sq mi
Coordinates
37.7384° N, 88.5406° W
Time zone
Central UTC−6 / −5
Landform region
Central Lowland
Drains to
Ohio River → Mississippi River → Gulf of America
Airport
Harrisburg-Raleigh (HSB) 398 ft
ZIP codes 1
62946
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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

  1. Independence Township430 ft
  2. Brushy Township430 ft
  3. Raleigh Township420 ft
  4. Raleigh410 ft
  5. East Eldorado Township400 ft
  6. Carrier Mills Township400 ft
  7. Carrier Mills400 ft
  8. Harrisburg Township380 ft
  9. Harrisburg380 ft
  10. Muddy370 ft
  11. Cottage Township370 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • Bald Knob, Saline County1,000 ft
  • Wamble Mountain940 ft
  • Cave Hill930 ft
  • Colbert Hill580 ft
  • Sand Hill570 ft
How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the city limits, 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 city limits (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, 340 ft at 37.7587° N, 88.5182° 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, ZIP code areas); FAA airport data; BTS time zones. All public domain.