South Portland, Maine

South Portland population, 2020 to 2024

South Portland added 413 residents from July 2020 to July 2024, a change of +1.6%. In the latest year it moved by +44. Among 20 Maine places of 5,000 or more, that growth ranks 12th; the median place changed by +1.6%. The median place of 5,000+ in Maine has 18,252 people, so South Portland is 1.5 times that size.

South Portland covers 12.05 square miles of land and 1.97 of water, for 2,240 people per square mile of land. The median Maine place of 5,000+ has 548, so South Portland is denser than the typical town.

What county South Portland is in

All of South Portland's residents live in Cumberland County, which had 313,809 residents in 2024. South Portland holds 8.6% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in South Portland

1 ZIP Code Tabulation Area (ZCTA) overlaps South Portland by at least 10% of the ZCTA's or the city's land: 04106. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where South Portland is

The Census internal point of South Portland is at 43.631400, -70.286000. Augusta, the capital, is 53.0 miles NNE in a straight line. The nearest larger place is Portland, ME (69,568 people), 5.0 miles away. The nearest city of 100,000 or more is Manchester, NH, 73.4 miles away.

Daylight in South Portland

At 43.63° N, South Portland gets about 15 h 27 min of daylight around the June solstice and 8 h 56 min around the December solstice, a swing of 6 h 31 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near South Portland

The eight nearest incorporated places of 1,000+ in Maine, measured between internal points. The closest is Portland, 5.0 miles away, with 69,568 people.