Newcastle, Maine Demographics & Population 2026
During the 2020–2024 ACS period, Newcastle, Maine had a total population of 664, the 122nd largest community in Maine, with a median household income of $80,833, which is 8% higher than the state average. The poverty rate is 5.9%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Newcastle Quick Facts
How Newcastle 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 | 621 | 664 | +6.9% |
| Median household income | $76,389 | $80,833 | +5.8% |
| Median home value | $417,700 | $420,500 | +0.7% |
How Newcastle 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+)
Newcastle Rankings in Maine
Explore Maine Rankings
Other Cities in Lincoln County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Waldoboro | 1,459 | $68,895 | 10.6% | $291,600 |
| Damariscotta | 1,100 | $67,647 | 15.7% | $419,100 |
| Boothbay Harbor | 1,047 | $49,861 | 25.6% | $327,800 |
| Wiscasset | 898 | $90,147 | 6.5% | $288,700 |
Cities Similar to Newcastle
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Alfred | 661 | N/A | $365,000 | 19.1% | 6.3% |
| Mapleton | 705 | $81,146 | $137,900 | 25.9% | 12.2% |
| Anson | 680 | $87,770 | $100,400 | 5.3% | 8.7% |
| Casco | 618 | N/A | $248,500 | 37.3% | 26.2% |
| Bowdoinham | 766 | N/A | $419,400 | 65.2% | 21.8% |
A note before these figures: with a population of 664, Newcastle's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Newcastle is a small community located in Maine, within Lincoln County. The total population is 664. It ranks as the 122nd most populous out of 155 Census-designated places in Maine.
Age Demographics
The median age in Newcastle is 54.8 years. This is 22% higher than the state median of 44.8 years. Only 10.4% of residents are under 18, indicating fewer families with children. 19.9% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Newcastle is $80,833. This is 8% higher than the state median of $74,733. It is also about the same as the national median of $80,734. The poverty rate stands at 5.9%. This is 45% lower than the state poverty rate of 10.8%. The survey records no unemployed residents in Newcastle, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $420,500. Housing costs are 42% higher than the state median of $296,600. The home-value-to-income ratio is 5.2x. 84.9% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 74.3%.
Race & Ethnicity
Newcastle has a predominantly White (non-Hispanic) population, comprising 95.3% of all residents. Hispanic or Latino residents account for 2.4%.
Education
40.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 11% 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 92.9%. Notably, 24.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Newcastle, 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 Newcastle, Maine?
Newcastle, Maine has a population of 664 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Newcastle, ME?
The median household income in Newcastle is $80,833, which is about the same as the national median of $80,734.
What is the poverty rate in Newcastle, ME?
The poverty rate in Newcastle is 5.9%. This means approximately 39 residents live below the federal poverty line.
What is the racial makeup of Newcastle, Maine?
Newcastle's population is 95.3% White, 0.0% Black, 2.4% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Newcastle, ME?
The median home value in Newcastle is $420,500. The home-value-to-income ratio is 5.2x.
How educated is Newcastle, Maine?
40.4% of adults (25+) in Newcastle hold a bachelor's degree or higher, and 24.9% hold a graduate or professional degree.