Grafton, IL Elevation & Topographic Map

Topographic elevation map of Grafton, Illinois, shaded from 420 ft near the middle to 810 ft on the north side
Elevation
810 ft 245 m710 ft 215 m660 ft 200 m570 ft 170 m470 ft 145 m420 ft 130 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

Grafton sits at about 680 ft (205 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
680 ft 205 m
most residents: 430–760 ft
Lowest
420 ft 130 m
near the middle
Highest
810 ft 245 m
on the north side
Average
620 ft 190 m
all land inside city limits

Grafton spans about 390 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
680 ft205 m
Highest point
Inside city limits, on the north side
810 ft245 m
Lowest point
Inside city limits, near the middle
420 ft130 m
Town center
USGS map point for Grafton
450 ft135 m
Airport (SET)
FAA airport elevation, the highest point of its runways, 2.6 mi south of the city limits
437 ft133 m
Average of all land620 ft190 m

Elevation profile, west to east

2.8 mi west to east through the town center.

Topographic Map

Topographic elevation map of Grafton, Illinois, shaded from 420 ft near the middle to 810 ft on the north side
City limits (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
City in Jersey County, Illinois, United States
Population
772 2024 est.
Land area
3.7 sq mi
Density
208 per sq mi
Coordinates
38.9700° N, 90.4315° W
Time zone
Central UTC−6 / −5
Landform region
Central Lowland
Drains to
Mississippi River → Gulf of America
Airport
St Charles County Regional/Smartt Field (SET) 437 ft
ZIP codes 1
62037
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Sources: U.S. Census Bureau, USGS, FAA

Nearby Places

Nearby towns by typical elevation

  1. Fieldon690 ft
  2. Grafton680 ft
  3. Quarry Township670 ft
  4. Mississippi Township620 ft
  5. Otterville620 ft
  6. Otter Creek Township, Jersey County610 ft
  7. Elsah610 ft
  8. Elsah Township610 ft
  9. Rosedale Township540 ft
  10. Brussels490 ft
  11. Portage Des Sioux, MO440 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • Tucker Knob890 ft
  • McAdams Peak850 ft
  • McCoy Hill800 ft
  • Dug Hill740 ft
  • Lone Tree Indian Mound580 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).
  • 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.