Johnson County, KS Elevation & Topographic Map
Elevation
1,140 ft 350 m1,040 ft 320 m990 ft 300 m890 ft 270 m790 ft 240 m740 ft 225 m
Contours every 500 ft, bold every 2,500 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.
- County area
- Fades everything outside the official county boundary (US Census).
Elevation Data
Johnson County averages about 990 ft (300 m) above sea level across all its land. Its ground runs from 740 ft on the north side to 1,140 ft on the southeast side.
Average elevation
990 ft 300 m
all land inside the county
Highest
1,140 ft 350 m
on the southeast side
Lowest
740 ft 225 m
on the north side
Johnson County spans about 400 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.
| Figure | Elevation |
|---|---|
| Average of all land | 990 ft300 m |
| Highest point Inside the county, on the southeast side | 1,140 ft350 m |
| Lowest point Inside the county, on the north side | 740 ft225 m |
Elevation profile, west to east
22 mi west to east through Overland Park.
Topographic Map
- Location
- County in Kansas, United States
- Population
- 632,276 2024 est.
- Land area
- 473.6 sq mi + 6.3 sq mi water
- Density
- 1,335 per sq mi
- Time zone
- Central UTC−6 / −5
- 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
- Johnson County990 ft
- Douglas County970 ft
- Miami County970 ft
- Leavenworth County940 ft
- Cass County, MO910 ft
- Jackson County, MO890 ft
- Wyandotte County890 ft
Rankings by average elevation
- Counties in Kansas91st highest of 104
- Counties in the United States1,422nd highest of 3,151
Peaks and hills highest inside
- Observation Bluff930 ft
All 25 towns in Johnson County by typical elevation
- Spring Hill Township1,070 ft
- Spring Hill1,060 ft
- Aubry Township1,060 ft
- Gardner1,050 ft
- Gardner Township1,040 ft
- Olathe1,040 ft
- Lenexa1,010 ft
- McCamish Township1,010 ft
- Edgerton1,000 ft
- Overland Park1,000 ft
- Mission1,000 ft
- Merriam990 ft
- Prairie Village980 ft
- Oxford Township980 ft
- Roeland Park980 ft
- Shawnee970 ft
- Westwood970 ft
- Mission Hills950 ft
- Leawood950 ft
- Lexington Township950 ft
- Fairway940 ft
- Lake Quivira940 ft
- Westwood Hills930 ft
- Mission Woods910 ft
- De Soto860 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.