South Portland, ME Elevation & Topographic Map

Topographic elevation map of South Portland, Maine, shaded from sea level level on Casco Bay to 160 ft on the southwest side
Elevation
160 ft 50 m120 ft 35 m100 ft 30 m60 ft 18 m20 ft 6 m0 ft 0 m
Contours every 100 ft, bold every 500 ft
USGS 3DEP · U.S. Census Bureau
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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.
City area
Fades everything outside the official city limits (US Census).

Elevation Data

South Portland sits at about 45 ft (14 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
45 ft 14 m
most residents: 16–84 ft
Lowest
0 ft 0 m
at sea level on Casco Bay
Highest
160 ft 50 m
on the southwest side
Average
52 ft 16 m
all land inside city limits

South Portland spans about 160 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.

FigureElevation
Typical
Where people live: half of residents higher, half lower
45 ft14 m
Highest point
Inside city limits, on the southwest side
160 ft50 m
Lowest point
Where the land meets Casco Bay
0 ft0 m
Town center
USGS map point for South Portland
26 ft8 m
Airport (PWM)
FAA airport elevation, the highest point of its runways
76 ft23 m
Average of all land52 ft16 m

Elevation profile, west to east

7.6 mi west to east through the town center.

Topographic Map

Topographic elevation map of South Portland, Maine, shaded from sea level level on Casco Bay to 160 ft on the southwest side
City limits (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
City in Cumberland County, Maine, United States
Population
26,994 2024 est.
Land area
12.0 sq mi + 2.0 sq mi water
Density
2,241 per sq mi
Coordinates
43.6415° N, 70.2409° W
Time zone
Eastern UTC−5 / −4
Landform region
New England
Drains to
Atlantic Ocean
Airport
Portland International Jetport (PWM) 76 ft
ZIP codes 1
04106
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WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.

Sources: U.S. Census Bureau, USGS, FAA

Nearby Places

Nearby towns by typical elevation

  1. Falmouth110 ft
  2. Falmouth Foreside110 ft
  3. Westbrook85 ft
  4. Portland74 ft
  5. Cape Elizabeth73 ft
  6. Oak Hill56 ft
  7. Scarborough50 ft
  8. South Portland45 ft
  9. Dunstan40 ft
  10. Cousins Island37 ft
  11. Long Island28 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • Pleasant Mountain2,017 ft
  • Green Mountain1,910 ft
  • Copple Crown Mountain1,870 ft
  • Cragged Mountain1,810 ft
  • Bill Merrill Mountain1,611 ft
How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the city limits, 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 city limits (TIGER, Jan 1 2026).
  • 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, −5 ft at 43.6529° N, 70.2313° W, is in such a hollow or patch and is not counted; this coastal land's lowest point is sea level on the coast.
  • 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; NOAA NGS survey heights. All public domain.