Johnson County, IN Elevation & Topographic Map

Topographic elevation map of Johnson County, Indiana, shaded from 630 ft on the northwest side to 1,020 ft on the south side
Elevation
1,020 ft 310 m920 ft 280 m870 ft 265 m780 ft 235 m680 ft 205 m630 ft 195 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

Johnson County averages about 770 ft (235 m) above sea level across all its land. Its ground runs from 630 ft on the northwest side to 1,020 ft on the south side.

Average elevation
770 ft 235 m
all land inside the county
Highest
1,020 ft 310 m
on the south side
Lowest
630 ft 195 m
on the northwest side

Johnson County spans about 390 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 land770 ft235 m
Highest point
Inside the county, on the south side
1,020 ft310 m
Lowest point
Inside the county, on the northwest side
630 ft195 m

Elevation profile, west to east

16 mi west to east through Greenwood.

Topographic Map

Topographic elevation map of Johnson County, Indiana, shaded from 630 ft on the northwest side to 1,020 ft on the south side
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Indiana, United States
Population
170,614 2024 est.
Land area
320.4 sq mi + 1.4 sq mi water
Density
532 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Central Lowland
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. Shelby County790 ft
  2. Marion County790 ft
  3. Johnson County770 ft
  4. Brown County760 ft
  5. Morgan County720 ft
  6. Bartholomew County680 ft

Rankings by average elevation

Peaks and hills highest inside

  • Polk Hill, Johnson County870 ft
  • Kelly Hill860 ft
  • Donalds Knoll850 ft
  • Turkey Hill, Johnson County840 ft
  • Sally Doty Hill830 ft
All 20 towns in Johnson County by typical elevation
  1. Trafalgar830 ft
  2. Hensley Township820 ft
  3. Union Township, Johnson County820 ft
  4. Nineveh Township810 ft
  5. Prince's Lakes810 ft
  6. New Whiteland800 ft
  7. Pleasant Township800 ft
  8. Bargersville800 ft
  9. Greenwood800 ft
  10. Whiteland800 ft
  11. Clark Township800 ft
  12. Nineveh790 ft
  13. White River Township750 ft
  14. Franklin750 ft
  15. Franklin Township, Johnson County750 ft
  16. Needham Township740 ft
  17. Needham730 ft
  18. Amity690 ft
  19. Blue River Township670 ft
  20. Edinburgh670 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. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
  • 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.