Clayton County, IA Elevation & Topographic Map

Topographic elevation map of Clayton County, Iowa, shaded from 600 ft on the southeast side to 1,270 ft on the southwest side
Elevation
1,270 ft 390 m1,110 ft 335 m1,020 ft 310 m860 ft 260 m690 ft 210 m600 ft 185 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

Clayton County averages about 980 ft (300 m) above sea level across all its land. Its ground runs from 600 ft on the southeast side to 1,270 ft on the southwest side.

Average elevation
980 ft 300 m
all land inside the county
Highest
1,270 ft 390 m
on the southwest side
Lowest
600 ft 185 m
on the southeast side

Clayton County spans about 670 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 land980 ft300 m
Highest point
Inside the county, on the southwest side
1,270 ft390 m
Lowest point
Inside the county, on the southeast side
600 ft185 m

Elevation profile, south to north

16 mi south to north through Guttenberg.

Topographic Map

Topographic elevation map of Clayton County, Iowa, shaded from 600 ft on the southeast side to 1,270 ft on the southwest side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Iowa, United States
Population
16,931 2024 est.
Land area
778.5 sq mi + 14.2 sq mi water
Density
22 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

  1. Fayette County1,100 ft
  2. Delaware County1,010 ft
  3. Allamakee County1,010 ft
  4. Clayton County980 ft
  5. Dubuque County970 ft
  6. Crawford County, WI950 ft
  7. Grant County, WI950 ft

Rankings by average elevation

  • Counties in Iowa68th highest of 99
  • Counties in the United States1,434th highest of 3,151

Peaks and hills highest inside

  • Chicken Ridge1,180 ft
  • Pilot Knob, Clayton County1,080 ft
All 18 towns in Clayton County by typical elevation
  1. Monona1,190 ft
  2. Strawberry Point1,190 ft
  3. Postville partly1,180 ft
  4. Edgewood partly1,160 ft
  5. Luana1,100 ft
  6. Garnavillo1,050 ft
  7. Farmersburg930 ft
  8. St. Olaf910 ft
  9. Clayton900 ft
  10. McGregor830 ft
  11. Marquette820 ft
  12. Volga820 ft
  13. North Buena Vista810 ft
  14. Elkader770 ft
  15. Garber710 ft
  16. Elkport660 ft
  17. Osterdock640 ft
  18. Guttenberg630 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.