Castine CDP, Maine Demographics & Population 2026
As of 2026, Castine CDP, Maine has a total population of 926, the 111th largest city in Maine, with a median household income of $143,229, which is 100% higher than the state average. The poverty rate is 0.8%.
Key Takeaways
- Household income is 100% above the state average — one of the wealthiest communities in Maine.
- An exceptionally low poverty rate of 0.8% — among the lowest in Maine.
- 86.2% of adults hold a bachelor's degree or higher — top 10% in Maine.
- Near full employment with an unemployment rate of just 2.2%.
Castine CDP Quick Facts
How Castine CDP Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
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: 17 | National average: 60
Education
Educational Attainment (Adults 25+)
Castine CDP Rankings in Maine
Explore Maine Rankings
Cities Similar to Castine CDP
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Kittery Point CDP | 1,008 | $138,185 | $454,900 | 63.9% | 1.8% |
| Blue Hill CDP | 1,066 | N/A | $343,000 | 50.2% | 13.2% |
| South Windham CDP | 1,047 | $128,108 | $325,700 | 33.0% | 11.8% |
| Greene CDP | 882 | $110,417 | $232,500 | 4.2% | 26.6% |
| Bowdoinham CDP | 768 | N/A | $352,900 | 51.5% | 24.0% |
Population Overview
Castine CDP is a small community located in Maine. The total population is 926. It ranks as the 111th most populous out of 155 cities and towns in Maine.
Age Demographics
The median age in Castine CDP is 20.5 years. This is 54% lower than the state median of 44.8 years. Only 8.2% of residents are under 18, indicating fewer families with children.
Economy, Income & Housing
The median household income in Castine CDP is $143,229. This is 100% higher than the state median of $71,773. Compared to the national median of $78,538, household income here is 82% higher. The poverty rate stands at 0.8%. This is 93% 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 2.2%. This is 44% lower than the state rate of 3.9%. The median home value is $658,200. Housing costs are 147% higher than the state median of $266,400. The home-value-to-income ratio is 4.6x. 87.3% of occupied housing units are owner-occupied. This homeownership rate is 18% higher than the state average of 74.0%.
Race & Ethnicity
Castine CDP has a predominantly White (non-Hispanic) population, comprising 89.6% of all residents. Hispanic or Latino residents account for 3.8%. The Hispanic or Latino population is significantly higher than the state average (3.8% vs 2.1%).
Education
86.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Castine CDP in the top 10% of all cities in the state for educational attainment. This is 144% higher than the state rate of 35.3%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 100.0%. Notably, 57.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Castine CDP, Maine is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Castine CDP, Maine?
Castine CDP, Maine has a population of 926 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Castine CDP, ME?
The median household income in Castine CDP is $143,229, which is 82% higher the national median of $78,538.
What is the poverty rate in Castine CDP, ME?
The poverty rate in Castine CDP is 0.8%. This means approximately 3 residents live below the federal poverty line.
What is the racial makeup of Castine CDP, Maine?
Castine CDP's population is 89.6% White, 1.9% Black, 3.8% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Castine CDP, ME?
The median home value in Castine CDP is $658,200. The home-value-to-income ratio is 4.6x.
How educated is Castine CDP, Maine?
86.2% of adults (25+) in Castine CDP hold a bachelor's degree or higher, and 57.4% hold a graduate or professional degree.