South Portland, Maine BoomTown Score & Growth Data (2026)

Q: Is South Portland a good place to invest in real estate?

South Portland has a BoomTown Score of 45/100 (Emerging).

Q: Is South Portland growing fast?

South Portland has 2.4% population growth year-over-year.

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49

Population Growth

+2.4%

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23

Building Permits

-3.66%

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50

Job Growth

+2.52%

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60

Net Migration

+408

What's Driving Growth in South Portland

South Portland is an emerging market worth watching. With a BoomTown Score of 45/100, early indicators suggest this Maine city could be on the verge of a growth spurt. The most promising signal is migration (+408 net migration). Watch this space - cities at this stage often accelerate quickly once a tipping point is reached.