Washington County, IA Elevation & Topographic Map
Elevation
830 ft 250 m770 ft 235 m740 ft 225 m680 ft 205 m620 ft 190 m590 ft 180 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
Washington County averages about 730 ft (220 m) above sea level across all its land. Its ground runs from 590 ft on the south side to 830 ft on the northwest side.
Average elevation
730 ft 220 m
all land inside the county
Highest
830 ft 250 m
on the northwest side
Lowest
590 ft 180 m
on the south side
Washington County spans about 240 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 | 730 ft220 m |
| Highest point Inside the county, on the northwest side | 830 ft250 m |
| Lowest point Inside the county, on the south side | 590 ft180 m |
Elevation profile, south to north
24 mi south to north through Washington.
Topographic Map
- Location
- County in Iowa, United States
- Population
- 22,631 2024 est.
- Land area
- 568.8 sq mi + 2.1 sq mi water
- Density
- 40 per sq mi
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Gulf of America
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Iowa County820 ft
- Keokuk County770 ft
- Johnson County740 ft
- Jefferson County730 ft
- Washington County730 ft
- Henry County690 ft
- Louisa County640 ft
Rankings by average elevation
- Counties in Iowa91st highest of 99
- Counties in the United States1,976th highest of 3,151
All 9 towns in Washington County by typical elevation
- West Chester770 ft
- Wellman760 ft
- Washington750 ft
- Brighton740 ft
- Crawfordsville730 ft
- Ainsworth720 ft
- Kalona670 ft
- Riverside670 ft
- Coppock650 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.
- Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 480 ft at 41.1943° N, 91.6993° W, is in such a hollow or patch and is not counted.
- 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.