Iosco County, MI Elevation & Topographic Map
Elevation
1,090 ft 330 m960 ft 295 m900 ft 275 m770 ft 235 m640 ft 195 m580 ft 175 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
Iosco County averages about 730 ft (225 m) above sea level across all its land. Its ground runs from 580 ft on the west side to 1,090 ft on the west side.
Average elevation
730 ft 225 m
all land inside the county
Highest
1,090 ft 330 m
on the west side
Lowest
580 ft 175 m
on the west side
Iosco County spans about 510 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 ft225 m |
| Highest point Inside the county, on the west side | 1,090 ft330 m |
| Lowest point Inside the county, on the west side | 580 ft175 m |
Elevation profile, west to east
78 mi west to east through Oscoda Township.
Topographic Map
- Location
- County in Michigan, United States
- Population
- 25,361 2024 est.
- Land area
- 549.5 sq mi + 1,340.6 sq mi water
- Density
- 46 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Central Lowland 99%
- Drains to
- Great Lakes
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Ogemaw County1,020 ft
- Alcona County830 ft
- Iosco County730 ft
- Huron County690 ft
- Arenac County670 ft
Rankings by average elevation
- Counties in Michigan63rd highest of 83
- Counties in the United States1,952nd highest of 3,151
All 17 towns in Iosco County by typical elevation
- Plainfield Township, Iosco County870 ft
- Reno Township800 ft
- Sand Lake780 ft
- Grant Township, Iosco County780 ft
- Whittemore770 ft
- Burleigh Township750 ft
- Wilber Township720 ft
- Sherman Township, Iosco County640 ft
- Tawas Township630 ft
- Oscoda Township610 ft
- Au Sable600 ft
- Baldwin Township600 ft
- Au Sable Township590 ft
- Alabaster Township590 ft
- Oscoda590 ft
- East Tawas590 ft
- Tawas City590 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, 570 ft at 44.2032° N, 83.5929° 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.