Population 45 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Seal Harbor
Household size in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 1.89 | 2.37 | 2.68 |
| 2010–14 | 1.88 | 2.36 | 2.73 |
| 2015–19 | 1.94 | 2.35 | 2.71 |
| 2020–24 | 1.95 | 2.30 | 2.65 |
| Change | +0.06 | −0.07 | −0.03 |
Households in Seal Harbor are small: just 1.95 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 51.0 | 42.1 | 37.7 |
| 2010–14 | 58.1 | 43.5 | 38.6 |
| 2015–19 | 52.2 | 45.0 | 39.6 |
| 2020–24 | 56.4 | 45.0 | 40.1 |
| Change | +5.4 | +2.9 | +2.3 |
Seal Harbor skews older: half of its residents are older than 56.4, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. The median age has climbed from 51.0 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 6.5% | 10.1% | 12.3% |
| 2010–14 | 1.1% | 10.1% | 12.3% |
| 2015–19 | 3.1% | 9.4% | 11.6% |
| 2020–24 | 2.6% | 8.8% | 11.6% |
| Change | −3.9 pts | −1.4 pts | −0.6 pts |
Single parents head only 2.6% of households in Seal Harbor, well below the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Seal Harbor
Renters in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 32.1% | 26.9% | 33.3% |
| 2010–14 | 33.1% | 28.6% | 35.6% |
| 2015–19 | 32.9% | 27.7% | 36.0% |
| 2020–24 | 29.7% | 25.7% | 34.8% |
| Change | −2.3 pts | −1.2 pts | +1.5 pts |
Most households in Seal Harbor own their homes; 29.7% rent, a little below the national share of 34.8%. Still, renters make up a bigger share here than in Maine overall (25.7%). Just over six in ten owners (62.2%) have paid off their mortgages, well above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 56.4% | 17.8% | 11.4% |
| 2010–14 | 50.4% | 18.1% | 11.4% |
| 2015–19 | 64.0% | 19.0% | 11.1% |
| 2020–24 | 65.1% | 16.4% | 9.6% |
| Change | +8.7 pts | −1.4 pts | −1.8 pts |
Vacancy is high in Seal Harbor: 65.1% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 1941 | 1969 | 1974 |
| 2010–14 | 1943 | 1971 | 1975 |
| 2015–19 | 1950 | 1973 | 1977 |
| 2020–24 | 1958 | 1975 | 1980 |
| Change | +17 | +6 | +6 |
Seal Harbor is a place of older homes: half were built before 1958, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | $627 | $766 | $965 |
| 2010–14 | $835 | $831 | $1,040 |
| 2015–19 | $985 | $919 | $1,213 |
| 2020–24 | $1,328 | $1,230 | $1,571 |
| Change | +$701 | +$464 | +$606 |
A typical rental in Seal Harbor costs $1,328 a month with utilities, below the national median of $1,571. Even so, rents here are higher than in Maine overall ($1,230). The typical renter here spends 18.8% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Seal Harbor
Bachelor's degrees in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 30.4% | 27.0% | 28.4% |
| 2010–14 | 40.6% | 28.7% | 29.6% |
| 2015–19 | 44.5% | 32.0% | 32.1% |
| 2020–24 | 69.3% | 36.5% | 35.6% |
| Change | +38.9 pts | +9.5 pts | +7.2 pts |
College graduates are unusually common in Seal Harbor: 69.3% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 97.3% | 89.9% | 84.9% |
| 2010–14 | 97.9% | 91.4% | 86.1% |
| 2015–19 | 98.2% | 92.6% | 87.7% |
| 2020–24 | 100.0% | 94.8% | 89.3% |
| Change | +2.7 pts | +4.8 pts | +4.3 pts |
Finishing high school is nearly universal in Seal Harbor: 100.0% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Seal Harbor
| Period | Seal Harbor | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 1.0% | 6.6% | 8.1% |
| 2010–14 | 2.2% | 7.6% | 9.4% |
| 2015–19 | 5.2% | 4.2% | 5.6% |
| 2020–24 | 0.0% | 3.9% | 5.4% |
| Change | −1.0 pts | −2.7 pts | −2.7 pts |
The survey found almost no one in Seal Harbor out of work and looking, against 5.4% of the labor force nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Seal Harbor compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Seal Harbor | 1.95 | 56.4 | 2.6% | 29.7% | 65.1% | 1958 | $1,328 | 69.3% | 100.0% | 0.0% |
| Islesford | 2.41 | 43.9 | 12.7% | 30.6% | 58.2% | 1982 | $1,250 | 44.1% | 94.7% | 1.2% |
| Frenchboro | 2.30 | 47.7 | 4.5% | 17.9% | 41.4% | 1983 | $1,195 | 35.4% | 95.1% | 5.6% |
| Cranberry Isles | 2.41 | 43.9 | 12.7% | 30.6% | 58.2% | 1982 | $1,250 | 44.1% | 94.7% | 1.2% |
| Southwest Harbor | 1.98 | 53.3 | 6.8% | 46.3% | 53.7% | 1979 | $989 | 34.2% | 97.9% | 5.8% |
| Bar Harbor | 1.93 | 50.3 | 5.3% | 28.5% | 36.6% | 1975 | $1,161 | 67.6% | 98.6% | 5.2% |
| Seawall | 2.41 | 43.9 | 12.7% | 30.6% | 58.2% | 1982 | $1,250 | 44.1% | 94.7% | 1.2% |
| Mount Desert | 2.13 | 49.6 | 2.8% | 11.4% | 53.5% | 1979 | $1,256 | 59.9% | 100.0% | 2.1% |
| Bass Harbor | 2.33 | 48.7 | 3.0% | 16.3% | 53.6% | 1982 | $1,465 | 42.8% | 94.2% | 2.6% |
| Salsbury Cove | 2.16 | 44.9 | 5.0% | 3.0% | 20.2% | 1997 | $1,106 | 71.6% | 100.0% | 0.0% |
| Indian Point | 2.16 | 48.2 | 2.9% | 9.2% | 51.9% | 1982 | $1,251 | 58.3% | 100.0% | 2.5% |
All figures 2020–24.
Cities with similar populations: Fruto, CA · West Andover, OH · West Davenport, NY · West Windsor, VT · Goodlake, OK · Goldville, AL · Glenrio, TX · Garrison, PA · Garfield, IA · Gann Valley, SD
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Seal Harbor. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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