Marion County, IA Elevation & Topographic Map
Elevation
1,010 ft 310 m930 ft 280 m880 ft 270 m800 ft 245 m720 ft 220 m680 ft 205 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
Marion County averages about 840 ft (255 m) above sea level across all its land. Its ground runs from 680 ft on the southeast side to 1,010 ft on the southwest side.
Average elevation
840 ft 255 m
all land inside the county
Highest
1,010 ft 310 m
on the southwest side
Lowest
680 ft 205 m
on the southeast side
Marion County spans about 330 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 | 840 ft255 m |
| Highest point Inside the county, on the southwest side | 1,010 ft310 m |
| Lowest point Inside the county, on the southeast side | 680 ft205 m |
Elevation profile, south to north
24 mi south to north through Pella.
Topographic Map
- Location
- County in Iowa, United States
- Population
- 34,048 2024 est.
- Land area
- 554.5 sq mi + 16.0 sq mi water
- Density
- 61 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
- Lucas County980 ft
- Warren County910 ft
- Polk County910 ft
- Jasper County890 ft
- Monroe County890 ft
- Marion County840 ft
- Mahaska County790 ft
Rankings by average elevation
- Counties in Iowa81st highest of 99
- Counties in the United States1,734th highest of 3,151
All 9 towns in Marion County by typical elevation
- Melcher-Dallas940 ft
- Pleasantville920 ft
- Knoxville900 ft
- Hamilton900 ft
- Bussey870 ft
- Pella860 ft
- Swan800 ft
- Marysville740 ft
- Harvey720 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.