South Portland, ME GIS Map
South Portland is a city in Cumberland County, Maine, with a population of about 25,665. The map below shows its location, boundary and surrounding roads, with federal GIS layers you can turn on for the area.
- County
- Cumberland County
- Population
- 25,665
- Elevation
- 25 ft
- Coordinates
- 43.6415, -70.2409
- ZIP codes (2)
- 04106, 04116
- Land area
- 12 sq mi
- Time zone
- America/New York
About South Portland, ME
South Portland is a city in Cumberland County, Maine, United States, and is the fourth-most populous city in the state, incorporated in 1898. At the 2020 census, the city population was 26,498. Known for its working waterfront, South Portland is situated on Portland Harbor and overlooks the skyline of Portland and the islands of Casco Bay. Due to South Portland's close proximity to air, marine, rail, and highway transportation options, the city has become a center for retail and industry in the region. The Maine Mall, the largest shopping mall in the state, is located in South Portland. It is also a designated Tree City USA community.
Source: Wikipedia (CC BY-SA 4.0)
Cities Near South Portland
- Portland, ME1 mi
- Scarborough, ME6 mi
- Westbrook, ME7 mi
- Old Orchard Beach, ME11 mi
- Saco, ME14 mi
- Biddeford, ME15 mi
- Brunswick, ME23 mi
- Kennebunk, ME23 mi
Other Cities in Cumberland County
GIS Data for South Portland, ME
The South Portland map loads live federal GIS layers in your browser, so you can check flood zones, terrain, land cover and district boundaries for any address in South Portland without a separate GIS login. Everything below is drawn from public U.S. government data.
Layers you can turn on
FEMA flood zones
National Flood Hazard Layer — flood insurance rate map zones.
Elevation contours and hillshade
USGS 3DEP terrain, so you can read slope and relief.
Land cover
NLCD land cover classes — forest, developed, wetland, water.
School districts
Census TIGER unified and elementary school district boundaries.
ZIP code and county boundaries
Census TIGER ZCTA and county boundary lines.
Map tools
Measure distance and area
Draw a line or polygon to get length in miles or area in acres.
Sketch and annotate
Add points, lines and shapes on top of the map.
Inspect any point
Click the map to read coordinates, elevation and the layers under your cursor.
Download the map
Save the current view as a PNG image.
South Portland Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
26,930
Households
12,152
Median household income
$86,838
Median age
40.9 years
Median home value
$441,200
Median gross rent
$1,812/mo
Owner-occupied homes
58.1%
Bachelor's degree or higher
51.7%
Below poverty level
6.9%
Land area
12 sq mi
Population density
2,236 / sq mi
County
ZIP codes in South Portland
South Portland Population Growth
Source: U.S. Census Bureau, 2010 Census and Population Estimates Program (Vintage 2024: April 2020 estimates base and July 1, 2024 estimate).
2010 Census
25,002
April 2020 (estimates base)
26,500
July 2024 estimate
26,994
Change 2010-2020
+6.0%
Change 2020-2024
+1.9%
Photos of South Portland
Hover over a photo to see it larger. Tap on mobile.
Photos from Wikimedia Commons, taken in or near South Portland. Credits and licenses are shown in the larger view.
Federal Buildings & Leases in South Portland
GSA-managed federal properties in and around South Portland.
| Property | Address | Status | Sq ft | Lease ends |
|---|---|---|---|---|
| CBP - South Portland | 155 Gannett Dr, 04106 | Leased | 23,420 | Aug 2037 |
| 207 Gannett Drive | 207 Gannett Dr, 04106 | Leased | 15,500 | Jun 2036 |
| 440 Western Ave | 440 Western Ave, 04106 | Leased | 8,424 | Dec 2029 |
| John Roberts Road | 75 John Roberts Rd Building C Suite C 75, 04106 | Leased | 7,644 | Jan 2039 |
| 707 Sable Oaks Drive | 707 Sable Oaks Dr, 04106 | Leased | 5,316 | May 2039 |
Source: U.S. GSA Inventory of Owned and Leased Properties (data.gov), September 2026.
Soils of South Portland
General soil map unit at the city center: Naumburg-Croghan-Adams
Soil Properties
- Drainage class
- Moderately well drained
- Hydrologic soil group
- A (high infiltration, low runoff)
- Available water storage (0–150 cm)
- 12.6 cm
- Typical slope
- 2%
- Flooding frequency
- None
- Min. annual water table depth
- 31 cm
Soil Components
- Naumburg26%
Spodosols · Typic Endoaquods
- Croghan23%
Spodosols · Aquic Haplorthods
- Adams23%
Spodosols · Typic Haplorthods
- Chocorua8%
Histosols · Terric Haplohemists
- Colton7%
Spodosols · Typic Haplorthods
- Elmwood3%
Inceptisols · Aquic Dystric Eutrudepts
Source: USDA NRCS U.S. General Soil Map (STATSGO2). General soil map data (1:250,000 scale) is not suitable for site-specific decisions.
Climate of South Portland
30-year averages (1991–2020) from the Portland Intl Jetport, Me weather station, elevation 45 ft, 3 miles from the city center.
Warmest month
Jul · avg high 80°F
Coldest month
Jan · avg low 16°F
Annual precipitation
48.1 in
Annual snowfall
68.7 in
Average Monthly Temperatures (°F)
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 35 | 42 | 54 | 64 | 74 | 80 | 79 | 71 | 60 | 48 | 38 |
| Avg low °F | 16 | 17 | 26 | 35 | 46 | 55 | 61 | 60 | 52 | 41 | 32 | 22 |
| Precip. in | 3.50 | 3.54 | 4.08 | 4.41 | 3.67 | 4.15 | 3.43 | 3.57 | 3.77 | 5.25 | 4.25 | 4.50 |
| Snow in | 18.6 | 16.6 | 13.6 | 2.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.3 | 14.6 |
Source: NOAA NCEI U.S. Climate Normals, 1991–2020. Conditions at the station may differ from other parts of the city.
Natural Hazard Risk in South Portland
FEMA National Risk Index ratings for Cumberland County, compared with all U.S. counties.
Overall risk
Score 77 of 100
Expected annual loss
Buildings, population & agriculture
Social vulnerability
Susceptibility to hazard impacts
Community resilience
Ability to prepare & recover
Risk by Hazard
- Winter WeatherVery High
- Ice StormVery High
- HurricaneRelatively Moderate
- LightningRelatively High
- EarthquakeRelatively Low
- Coastal FloodingRelatively Moderate
- Strong WindRelatively Moderate
- HailRelatively Moderate
- Inland FloodingRelatively Low
- LandslideRelatively Low
- Cold WaveRelatively Low
- Heat WaveRelatively Low
- DroughtRelatively Low
- WildfireVery Low
- TornadoVery Low
- AvalancheVery Low
Source: FEMA National Risk Index (December 2025 release). County-level ratings are relative to other U.S. counties and are not a property-specific assessment.
South Portland FAQ
What county is South Portland in?
+
South Portland, Maine is located in Cumberland County.
What is the population of South Portland?
+
South Portland has a population of about 25,665, making it the number 4 of the 26 Maine cities listed on GIS Map.
What is the elevation of South Portland?
+
The elevation of South Portland is approximately 25 feet (8 meters) above sea level at the city center.
What ZIP codes are in South Portland?
+
ZIP codes for South Portland include 04106, 04116.
What time zone is South Portland in?
+
South Portland is in the Eastern Time zone (America/New York).
How far is South Portland from Augusta?
+
South Portland is about 52 miles from Augusta, the capital of Maine, in a straight line.
How far is South Portland from Portland?
+
South Portland is about 1 miles from Portland, the largest city in Maine listed on GIS Map, in a straight line.
What cities are near South Portland?
+
Cities near South Portland include Portland, ME (1 miles); Scarborough, ME (6 miles); Westbrook, ME (7 miles); Old Orchard Beach, ME (11 miles); Saco, ME (14 miles).
Local notes for South Portland, ME
Questions and local knowledge from people who know the area. Every note is read before it appears here.