Dubuque County, IA Elevation & Topographic Map

Topographic elevation map of Dubuque County, Iowa, shaded from 590 ft on the southeast side to 1,250 ft on the northwest side
Elevation
1,250 ft 380 m1,090 ft 330 m1,000 ft 305 m840 ft 255 m670 ft 205 m590 ft 180 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

Dubuque County averages about 970 ft (295 m) above sea level across all its land. Its ground runs from 590 ft on the southeast side to 1,250 ft on the northwest side.

Average elevation
970 ft 295 m
all land inside the county
Highest
1,250 ft 380 m
on the northwest side
Lowest
590 ft 180 m
on the southeast side

Dubuque County spans about 660 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 land970 ft295 m
Highest point
Inside the county, on the northwest side
1,250 ft380 m
Lowest point
Inside the county, on the southeast side
590 ft180 m

Elevation profile, west to east

25 mi west to east through Dubuque.

Topographic Map

Topographic elevation map of Dubuque County, Iowa, shaded from 590 ft on the southeast side to 1,250 ft on the northwest side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Iowa, United States
Population
99,242 2024 est.
Land area
608.3 sq mi + 8.2 sq mi water
Density
163 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. Delaware County1,010 ft
  2. Clayton County980 ft
  3. Dubuque County970 ft
  4. Grant County, WI950 ft
  5. Jones County880 ft
  6. Jo Daviess County, IL840 ft
  7. Jackson County810 ft

Rankings by average elevation

  • Counties in Iowa69th highest of 99
  • Counties in the United States1,464th highest of 3,151

Peaks and hills highest inside

  • Sherrill Mound1,220 ft
All 21 towns in Dubuque County by typical elevation
  1. Holy Cross1,210 ft
  2. Balltown1,180 ft
  3. Luxemburg1,170 ft
  4. Bankston1,120 ft
  5. Farley1,110 ft
  6. Centralia1,100 ft
  7. Peosta1,050 ft
  8. Rickardsville1,040 ft
  9. Epworth1,030 ft
  10. New Vienna1,020 ft
  11. Sherrill970 ft
  12. Dyersville960 ft
  13. Zwingle940 ft
  14. Bernard920 ft
  15. Worthington920 ft
  16. Asbury890 ft
  17. Cascade850 ft
  18. Graf840 ft
  19. Dubuque800 ft
  20. Durango660 ft
  21. Sageville660 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.