Dallas County, IA Elevation & Topographic Map
Elevation
1,160 ft 355 m1,070 ft 325 m1,030 ft 315 m940 ft 285 m860 ft 260 m810 ft 250 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
Dallas County averages about 990 ft (305 m) above sea level across all its land. Its ground runs from 810 ft on the southeast side to 1,160 ft on the southwest side.
Average elevation
990 ft 305 m
all land inside the county
Highest
1,160 ft 355 m
on the southwest side
Lowest
810 ft 250 m
on the southeast side
Dallas County spans about 350 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 ft305 m |
| Highest point Inside the county, on the southwest side | 1,160 ft355 m |
| Lowest point Inside the county, on the southeast side | 810 ft250 m |
Elevation profile, west to east
24 mi west to east through Waukee.
Topographic Map
- Location
- County in Iowa, United States
- Population
- 115,343 2024 est.
- Land area
- 588.2 sq mi + 3.4 sq mi water
- Density
- 196 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
- Guthrie County1,200 ft
- Greene County1,100 ft
- Madison County1,070 ft
- Boone County1,060 ft
- Dallas County990 ft
- Polk County910 ft
Rankings by average elevation
- Counties in Iowa63rd highest of 99
- Counties in the United States1,410th highest of 3,151
All 18 towns in Dallas County by typical elevation
- Dexter1,150 ft
- Linden1,120 ft
- Woodward1,060 ft
- Dallas Center1,050 ft
- Minburn1,040 ft
- Dawson1,030 ft
- Waukee1,030 ft
- Perry970 ft
- Redfield970 ft
- Grimes partly950 ft
- Adel950 ft
- De Soto940 ft
- Urbandale partly940 ft
- West Des Moines partly940 ft
- Bouton940 ft
- Van Meter940 ft
- Clive partly930 ft
- Granger890 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.