Maine has 1.3 million residents, making it the 42nd most populated state in the United States. There are no cities in this state that have more than 100,000 residents. According to estimates, Portland has more than 66,000 people, making it the most populated city in Maine. With a total population of 36,202, Lewiston, the second most populated city, has a little more than half that. Bangor, which has more than 32,000 inhabitants, completes the top three. With an estimated population of just 18,471, Augusta, the state capital, is the eighth most populous city in the state.
List of Top 10 Largest Cities by Population in Maine
- Portland
- Lewiston
- Bangor
- South Portland
- Auburn
- Scarborough
- Brunswick
- Biddeford
- Sanford
- Saco
1. Portland
Portland—the biggest city in Maine—remains a thriving center of culture, commerce, and history. Having a population of over 69,847, this energetic seaside city, which is tucked away along Casco Bay, is Maine’s metropolitan center without sacrificing its small-town charm. Portland is well-known for its rich history, vibrant food scene, and charming waterfront.
Among its cobblestone lanes and 19th-century buildings, the Old Port neighborhood is still a popular destination for tourists and locals alike, offering a wide range of shops, galleries, and well-known eateries. Portland is known as a gastronomy hotspot because of its bountiful seafood and farm-to-table philosophy.
A thriving arts sector is also supported in the city, and its cultural energy is enhanced by establishments like the Portland Museum of Art and other theaters. Portland’s busy waterfront reflects its significance in trade and tourism, while the East End’s parks and trails provide nature enthusiasts with recreational choices.
Particularly in fields like medical treatment, technology, and renewable energy, Portland, the economic hub of Maine, encourages innovation and entrepreneurship. Together with its diverse cultural heritage, Portland’s dedication to sustainability makes it a shining example of how to advance while maintaining a strong feeling of community and history.
2. Lewiston
Lewiston, the second-biggest city in Maine, is a vibrant, culturally diverse town of around 38,296 people. The city is characterized by its industrial past, thriving arts scene, and expanding economic variety. It is situated along the Androscoggin River.
Lewiston was formerly a mill town, but it has since changed its image to become a center for small company growth, healthcare, and education. Bates College is a prominent liberal arts university in the city that contributes academically, culturally, and athletically to the surrounding community. Additionally, Lewiston is home to Central Maine Medical Center, a vital component of the area’s healthcare system.
The city’s festivals, food, and cultural organizations all proudly honor its Franco-American heritage. The downtown section of Lewiston is still developing, combining new construction with old buildings to provide a variety of dining options, art galleries, and performance venues. A thriving arts scene may be seen at the Franco Center and other locations.
The thriving Somali-American community in Lewiston, which has contributed new enterprises, cultural traditions, and vitality, is a clear example of the city’s embracing of diversity.
3. Bangor
Bangor, the third-largest city in Maine, continues to develop as a regional hub for trade, culture, and outdoor recreation. It is home to around 31,645 people and is the cultural and economic hub of most of northern and eastern Maine. Its long history as a previous timber hub and its current role in trade and tourism are both enhanced by its advantageous position along the Penobscot River.
Downtown Bangor is a bustling neighborhood with a variety of old buildings, unique stores, and a developing food scene. Both families and art lovers are drawn to landmarks like the old Bangor Opera House and the Maine Discovery Museum. In addition, the city honors its history through the Bangor State Fair and its ties to Stephen King, whose writing frequently mentions the city.
Bangor International Airport facilitates travel for business as well as pleasure by linking the area to both domestic and foreign locations. With organizations like Husson University and Northern Light Eastern Maine Medical Center serving as the city’s anchors, healthcare and education continue to be vital sectors.
4. South Portland
South Portland is a vibrant seaside hamlet and one of Maine’s biggest communities, with a population of around 26,661. It is a gateway between urban bustle and natural beauty, combining a strong business presence with residential attractiveness, and is located across the Fore River from Portland.
The city is renowned for its thriving commercial and retail areas, which include the largest shopping mall in the state, the Maine Mall. Retail, shipping, and technology are just a few of the businesses that drive its economy, and commerce and logistics are strengthened by its close proximity to Portland’s port.
The beautiful coastline of South Portland, which includes well-known spots like Willard Beach and Bug Light Park, is another reason for its fame. These locations are well liked by locals and tourists looking for outdoor activity because they provide breathtaking views of Casco Bay. The city’s dedication to sustainable living is strengthened by the Greenbelt Walkway, a multipurpose walkway that links several communities.
5. Auburn
A flourishing city renowned for its rich history, varied businesses, and strong sense of community, Auburn is one of Maine’s largest cities, with a projected population of 25,217 in 2024. Forming the second half of the Lewiston-Auburn (L-A) metropolitan area, it is situated on the Androscoggin River, sharing resources and promoting regional development.
Originally an industrial city, Auburn has developed into a center for small company growth, manufacturing, and retail. A blend of contemporary establishments, lively communal areas, and historic buildings can be seen in its restored downtown. Local stores and Auburn Mall offer a variety of shopping choices, while the city’s culinary culture combines traditional and foreign flavors.
Auburn places a high importance on education and leisure, with parks, libraries, and schools acting as the cornerstones of local society. The Auburn Riverwalk draws bikers, joggers, and walkers with its scenic paths alongside the Androscoggin River. Boating, aquaculture, and picnicking are all possible at Lake Auburn, a magnificent body of water.
6. Scarborough
Scarborough, which has a population of about 24,093, is one of the biggest and fastest-growing towns in Maine. Known for its breathtaking coastline, booming economy, and welcoming environment for families, Scarborough is a lively fusion of contemporary life and the natural world. It is situated just south of Portland and, while retaining its own seaside beauty, provides convenient access to metropolitan facilities.
Some of the most beautiful beaches in Maine may be found near Scarborough, such as Pine Point Beach and Scarborough Beach State Park, which attract tourists all year round for swimming, strolling, and birding. The neighboring Scarborough Marsh, the biggest saltwater marsh in Maine, is a nature lover’s paradise, offering kayaking, hiking, and animal observation.
A combination of commerce, healthcare, and tourism drives the town’s economy, with a rising focus on sustainable development. Parts of the town have been turned into lively residential and commercial areas by the Scarborough Downs redevelopment project, drawing in both new people and companies.
7. Brunswick
Brunswick is one of the biggest and most culturally active towns in Maine in 2024, with a population of over 22,393. Brunswick, which is situated between the Androscoggin River and the picturesque midcoast of the state, combines a wealth of natural beauty, scholarly distinction, and a rich history.
Brunswick benefits from the presence of Bowdoin College, a prominent liberal arts university that delivers top-notch academics, art, and society to the region. Two cultural treasures that draw tourists and benefit the neighborhood are the Maine State Music Theatre and the Bowdoin College Museum of Art.
Brunswick’s historic downtown is a center of innovation and business, with a variety of locally owned stores, eateries, and art galleries. The community embraces a contemporary, forward-thinking approach to development while honoring its industrial and marine past. The old naval air station, Brunswick Landing, has been converted into a bustling economic and creative park that now houses both new and existing businesses.
Given its closeness to the shore, Brunswick appeals to outdoor lovers who may boat, fish, and explore beautiful trails at neighboring Harpswell and Bailey Island.
8. Biddeford
Biddeford is estimated to have 22,271 residents and has become a thriving center for innovation. Biddeford, which lies south of Portland along the Saco River, is a city that expertly combines its heritage as a mill town with a forward-thinking outlook.
Biddeford’s rebuilt mill sector is at the center of the city’s development. In place of textile mills, modern buildings now house restaurants, offices, breweries, and residences. The city has seen economic development as a result of this revival, which has also drawn young professionals, artists, and entrepreneurs. Locally owned stores, restaurants, and cultural attractions abound on Biddeford’s Main Street, reflecting the diversity and inventiveness of the neighborhood.
The city’s allure as a seaside resort is increased by its close proximity to stunning beaches like Fortunes Rocks and Biddeford Pool. Outdoor pursuits, including kayaking, hiking, and fishing, are popular among locals and tourists alike along the Atlantic shoreline and Saco River.
Biddeford is renowned for its strong feeling of community, which is reinforced by top-notch educational institutions, vibrant civic associations, and yearly celebrations like the River Jam Festival.
9. Sanford
Sanford is one of the state’s major communities, with a projected population of 22,259 in 2024. It is renowned for its diverse economy, rich history, and friendly attitude. Once a thriving mill town, Sanford has maintained its historic elegance while evolving into a regional center for manufacturing, education, and leisure.
The restored downtown of Sanford is home to a variety of neighborhood eateries, shops, and public areas that combine to create a vibrant and cohesive environment. Modern construction continues to draw in new companies and inhabitants, while the Sanford-Springvale Historical Society and museums honor the city’s past. Additionally, Sanford is adjacent to the Sanford Seacoast Regional Airport, which facilitates commercial and regional travel.
The city’s parks, trails, and neighboring lakes provide a wealth of outdoor recreation opportunities. A focal point of the neighborhood, Number One Pond is the site of occasions like WinterFest and the yearly Fourth of July fireworks. Hiking, riding, and taking in the scenery are all made possible by the Mousam Way Trails.
Sanford’s outstanding educational institutions, such as the cutting-edge Sanford High School and Regional Technical Center, highlight the city’s dedication to workforce development and education. Sanford, which strikes a balance between development and historic preservation, is still an important and prosperous area in southern Maine.
10. Saco
Saco, an energetic and attractive village located between the Saco River and the southern Maine coastline, is one of the state’s biggest communities, with a projected population of 21,037. Known for its vibrant downtown, stunning beaches, and lengthy history, Saco provides the ideal balance of small-town charm and contemporary conveniences.
Locally owned stores, a variety of culinary options, and historic buildings can all be found in the city’s renovated downtown. Seasonal farmers’ markets and community gatherings like the Saco Sidewalk Arts Festival contribute to its lively vibe. In addition, Saco has embraced sustainable development, working to protect green areas and advance renewable energy.
Saco’s natural beauty attracts outdoor lovers. Miles of sandy beaches, hiking trails, kayaking, and birding are all available at the neighboring Ferry Beach State Park. Other recreational opportunities on the Saco River include fishing and boating.
Manufacturing, small enterprises, and tourism all contribute to Saco’s robust economy, and the area’s close proximity to popular destinations like Old Orchard Beach encourages local trade.
| Rank | City | Population (2025) | Area (mi2) |
| 1 | Portland | 69,847 | 21.5 |
| 2 | Lewiston | 38,296 | 34.1 |
| 3 | Bangor | 31,645 | 34.3 |
| 4 | South Portland | 26,661 | 12.0 |
| 5 | Auburn | 25,217 | 59.3 |
| 6 | Scarborough | 24,093 | 47.7 |
| 7 | Brunswick | 22,393 | 46.8 |
| 8 | Biddeford | 22,271 | 30.1 |
| 9 | Sanford | 22,259 | 47.8 |
| 10 | Saco | 21,037 | 38.6 |
Conclusion
The biggest cities in Maine, such as Portland, Bangor, South Portland, and others, offer a vibrant blend of culture, history, and economic development. Each city adds to Maine’s allure as a vibrant and diversified state by providing a distinctive fusion of modern development and historic beauty.
These cities are centers of innovation, healthcare, and education, from Lewiston and Auburn developing industrial sectors to Portland’s vibrant waterfront and cultural scene. While towns like Scarborough and Saco are renowned for their natural beauty and coastline appeal, cities like Bangor and Brunswick attract tourists with their cultural offerings. These cities continue to be essential to the economy, way of life, and feeling of the community of Maine as it grows.
FAQs
Which Maine City is the Largest?
In 2025, Portland has 69,847 residents, making it the largest city in Maine.
Which Maine City is Expanding the Fastest?
Having an annual growth rate of 5.45% since 2020, Greenville has been the fastest-growing city in Maine for the last four years.
Which Ten Cities in Maine Are the Largest?
Here’s the list of the top 10 largest cities in Maine:
- Portland
- Lewiston
- Bangor
- South Portland
- Auburn
- Scarborough
- Brunswick
- Biddeford
- Sanford
- Saco
Which Maine Town is the Smallest?
In terms of area, Randolph is the smallest town in Maine. Randolph, Massachusetts, named for the first President of the Continental Congress, Peyton Randolph, inspired the town’s name.
Is the State of Maine Friendly?
Arguably, some of the friendliest individuals in the United States reside in Maine. They are compassionate neighbors, industrious longshoremen, modest store owners, and brilliant cooks.
