Portland Township, MI Elevation & Topographic Map
Elevation
830 ft 255 m800 ft 240 m780 ft 235 m740 ft 225 m700 ft 215 m680 ft 210 m
Contours every 200 ft, bold every 1,000 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.
- Township area
- Fades everything outside the official township boundaries (US Census).
Elevation Data
Portland Township sits at about 770 ft (235 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
770 ft 235 m
most residents: 730–800 ft
Lowest
680 ft 210 m
on the north side
Highest
830 ft 255 m
on the southwest side
Average
770 ft 235 m
all land inside township boundaries
Portland Township spans about 150 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 770 ft235 m |
| Highest point Inside township boundaries, on the southwest side | 830 ft255 m |
| Lowest point Inside township boundaries, on the north side | 680 ft210 m |
| Airport (Y70) FAA airport elevation, the highest point of its runways, 5.3 mi northwest of the township boundaries | 818 ft249 m |
| Average of all land | 770 ft235 m |
Elevation profile, south to north
6.0 mi south to north through the middle of Portland Township.
Topographic Map
- Location
- Township in Ionia County, Michigan, United States
- Population
- 3,945 2024 est.
- Land area
- 32.2 sq mi + 1.1 sq mi water
- Density
- 123 per sq mi
- Coordinates
- 42.8870° N, 84.9162° W
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Central Lowland
- Drains to
- Grand River
- Airport
- Ionia County (Y70) 818 ft
- ZIP codes 4
- 48851 48873 48875 48894
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Eagle830 ft
- Sebewa Township830 ft
- Orange Township, Ionia County800 ft
- Danby Township790 ft
- Portland Township770 ft
- Portland760 ft
- Westphalia Township760 ft
- Westphalia760 ft
- Lyons Township720 ft
- Muir700 ft
- Lyons670 ft
Rankings by typical elevation
- Towns in Michigan1,092nd highest of 1,985
- Towns in Ionia County17th highest of 27
Peaks and hills nearest, by height
- The Island720 ft
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the township boundaries, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
- Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census township boundaries (TIGER, Jan 1 2026).
- Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
- 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 (FAA airport elevation, 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 (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones. All public domain.