Sioux County, IA Elevation & Topographic Map
Elevation
1,490 ft 455 m1,400 ft 430 m1,360 ft 415 m1,270 ft 390 m1,180 ft 360 m1,140 ft 345 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
Sioux County averages about 1,370 ft (415 m) above sea level across all its land. Its ground runs from 1,140 ft on the southwest side to 1,490 ft on the northwest side.
Average elevation
1,370 ft 415 m
all land inside the county
Highest
1,490 ft 455 m
on the northwest side
Lowest
1,140 ft 345 m
on the southwest side
Sioux 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 | 1,370 ft415 m |
| Highest point Inside the county, on the northwest side | 1,490 ft455 m |
| Lowest point Inside the county, on the southwest side | 1,140 ft345 m |
Elevation profile, west to east
30 mi west to east through Sioux Center.
Topographic Map
- Location
- County in Iowa, United States
- Population
- 36,554 2024 est.
- Land area
- 767.9 sq mi + 1.1 sq mi water
- Density
- 48 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
- O'Brien County1,450 ft
- Lyon County1,410 ft
- Lincoln County, SD1,380 ft
- Sioux County1,370 ft
- Plymouth County1,320 ft
- Union County, SD1,240 ft
Rankings by average elevation
- Counties in Iowa7th highest of 99
- Counties in the United States940th highest of 3,151
All 14 towns in Sioux County by typical elevation
- Granville1,450 ft
- Sioux Center1,440 ft
- Hull1,430 ft
- Sheldon partly1,430 ft
- Boyden1,420 ft
- Orange City1,420 ft
- Ireton1,410 ft
- Matlock1,400 ft
- Hospers1,350 ft
- Alton1,330 ft
- Maurice1,310 ft
- Rock Valley1,260 ft
- Hawarden1,180 ft
- Chatsworth1,160 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.