South Berwick, Maine Demographics & Population 2026
During the 2020–2024 ACS period, South Berwick, Maine had a total population of 3,381, the 43rd largest community in Maine, with a median household income of $90,972, which is 22% higher than the state average. The poverty rate is 4.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 4.8% — among the lowest in Maine.
South Berwick Quick Facts
How South Berwick Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 3,441 | 3,381 | -1.7% |
| Median household income | $77,493 | $90,972 | +17.4% |
| Median home value | $340,800 | $396,700 | +16.4% |
How South Berwick Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 19 | National average: 61
Education
Educational Attainment (Adults 25+)
South Berwick Rankings in Maine
Explore Maine Rankings
Other Cities in York County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Biddeford | 22,498 | $72,333 | 15.5% | $396,600 |
| Sanford | 22,247 | $72,524 | 10.3% | $280,200 |
| Saco | 20,819 | $92,241 | 6.4% | $413,100 |
| Old Orchard Beach | 9,244 | $60,050 | 14.9% | $366,600 |
| Kennebunk | 6,221 | $95,169 | 11.2% | $452,800 |
| Kittery | 5,110 | $84,730 | 4.0% | $461,400 |
| York Harbor | 4,240 | $100,625 | 5.3% | $627,700 |
| South Eliot | 4,203 | $99,299 | 5.5% | $475,600 |
| Lake Arrowhead | 3,322 | $98,654 | 2.5% | $267,300 |
| Cape Neddick | 2,453 | $108,412 | 12.0% | $684,400 |
Cities Similar to South Berwick
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lake Arrowhead | 3,322 | $98,654 | $267,300 | 27.0% | 2.5% |
| Lisbon | 3,612 | $86,221 | $237,200 | 27.1% | 7.1% |
| Camden | 3,682 | $78,788 | $498,800 | 58.0% | 9.6% |
| South Eliot | 4,203 | $99,299 | $475,600 | 49.9% | 5.5% |
| Calais | 3,097 | $64,096 | $111,100 | 25.3% | 21.4% |
Population Overview
South Berwick is a small community located in Maine, within York County. The total population is 3,381. It ranks as the 43rd most populous out of 155 Census-designated places in Maine.
Age Demographics
The median age in South Berwick is 41.4 years. This is 8% lower than the state median of 44.8 years.
Economy, Income & Housing
The median household income in South Berwick is $90,972. This is 22% higher than the state median of $74,733. It is also 13% higher than the national median of $80,734. The poverty rate stands at 4.8%. This is 55% lower than the state poverty rate of 10.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.6%. This is 22% higher than the state rate of 3.8%. The median home value is $396,700. Housing costs are 34% higher than the state median of $296,600. The home-value-to-income ratio is 4.4x. 67.0% of occupied housing units are owner-occupied. This homeownership rate is 10% lower than the state average of 74.3%.
Race & Ethnicity
South Berwick has a predominantly White (non-Hispanic) population, comprising 90.6% of all residents. Hispanic or Latino residents account for 2.7%.
Education
47.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 30% higher than the state rate of 36.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.7%. Notably, 17.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for South Berwick, Maine is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Maine state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 155 Census-designated places in Maine. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of South Berwick, Maine?
South Berwick, Maine has a population of 3,381 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in South Berwick, ME?
The median household income in South Berwick is $90,972, which is 13% higher than the national median of $80,734.
What is the poverty rate in South Berwick, ME?
The poverty rate in South Berwick is 4.8%. This means approximately 162 residents live below the federal poverty line.
What is the racial makeup of South Berwick, Maine?
South Berwick's population is 90.6% White, 0.0% Black, 2.7% Hispanic/Latino, and 0.6% Asian.
What is the median home value in South Berwick, ME?
The median home value in South Berwick is $396,700. The home-value-to-income ratio is 4.4x.
How educated is South Berwick, Maine?
47.2% of adults (25+) in South Berwick hold a bachelor's degree or higher, and 17.3% hold a graduate or professional degree.