RANKING · 2025 ESTIMATES · 20 SHOWN OF 20

Largest by population, Maine cities

The most populous Maine cities as of the 2025 population estimates. This list covers the 20 cities in Maine that qualify, ranked against each other statewide. The median across all 20 is 19,155. Biggest climber in the top 100 since 2020: Gardiner, ME, up 7 places to #20.

MaineAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Portland, MEME69,911+9%

02Lewiston, MEME38,866+9%

03Bangor, MEME32,518+3%

04South Portland, MEME27,007+16%

05Auburn, MEME25,441+10%

06▲1Sanford, MEME22,663+124%

07▼1Biddeford, MEME22,399+7%

08Westbrook, MEME21,565+34%

09Saco, MEME21,159+26%

10Augusta, MEME19,155+3%

11▲1Waterville, MEME17,579+13%

12▲2Brewer, MEME9,636+7%

13▲5Ellsworth, MEME8,862+37%

14▲3Bath, MEME8,835−5%

15▲1Presque Isle, MEME8,694−9%

16▲4Old, MEME7,589−7%

17▲4Caribou, MEME7,321−12%

18▲5Rockland, MEME7,142−6%

19▲3Belfast, MEME6,988+10%

20▲7Gardiner, MEME6,2060%

SHOWING 1–20 OF 20

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES