Population 1,355 · Census ACS 2020–24
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Population and households in Castine
Household size in Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 2.59 | 2.37 | 2.68 |
| 2010–14 | 2.10 | 2.36 | 2.73 |
| 2015–19 | 2.44 | 2.35 | 2.71 |
| 2020–24 | 2.22 | 2.30 | 2.65 |
| Change | −0.37 | −0.07 | −0.03 |
Households in Castine are small: just 2.22 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. Since 2006–10, household size has dropped from 2.59, but in a place this small, much of that may be survey noise rather than real change.
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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 22.1 | 42.1 | 37.7 |
| 2010–14 | 21.5 | 43.5 | 38.6 |
| 2015–19 | 21.0 | 45.0 | 39.6 |
| 2020–24 | 21.2 | 45.0 | 40.1 |
| Change | −0.9 | +2.9 | +2.3 |
Castine is young: half of its residents are under 21.2, compared with a national median of 40.1. The population tilts toward young adults in their twenties.
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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 3.3% | 10.1% | 12.3% |
| 2010–14 | 3.1% | 10.1% | 12.3% |
| 2015–19 | 6.2% | 9.4% | 11.6% |
| 2020–24 | 4.3% | 8.8% | 11.6% |
| Change | +0.9 pts | −1.4 pts | −0.6 pts |
Single-parent households are relatively rare in Castine: 4.3% of households, against 11.6% nationally.
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 Castine
Renters in Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 32.8% | 26.9% | 33.3% |
| 2010–14 | 31.8% | 28.6% | 35.6% |
| 2015–19 | 42.2% | 27.7% | 36.0% |
| 2020–24 | 19.6% | 25.7% | 34.8% |
| Change | −13.2 pts | −1.2 pts | +1.5 pts |
Only 19.6% of households in Castine rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Nearly half of owners (48.1%) have paid off their mortgages, 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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 49.7% | 17.8% | 11.4% |
| 2010–14 | 48.0% | 18.1% | 11.4% |
| 2015–19 | 64.3% | 19.0% | 11.1% |
| 2020–24 | 51.1% | 16.4% | 9.6% |
| Change | +1.5 pts | −1.4 pts | −1.8 pts |
Vacant homes make up 51.1% of the housing in Castine, 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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 1938 | 1969 | 1974 |
| 2010–14 | 1957 | 1971 | 1975 |
| 2015–19 | 1973 | 1973 | 1977 |
| 2020–24 | 1974 | 1975 | 1980 |
| Change | +36 | +6 | +6 |
Housing in Castine leans a little older: the median home dates to 1974, against 1980 nationally. Maine as a whole looks much the same.
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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | $925 | $766 | $965 |
| 2010–14 | $685 | $831 | $1,040 |
| 2015–19 | $1,073 | $919 | $1,213 |
| 2020–24 | $1,105 | $1,230 | $1,571 |
| Change | +$180 | +$464 | +$606 |
A typical rental in Castine costs $1,105 a month with utilities, well below the national median of $1,571. The typical renter here spends 51.0% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 Castine
Bachelor's degrees in Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 67.5% | 27.0% | 28.4% |
| 2010–14 | 61.0% | 28.7% | 29.6% |
| 2015–19 | 52.5% | 32.0% | 32.1% |
| 2020–24 | 74.5% | 36.5% | 35.6% |
| Change | +7.0 pts | +9.5 pts | +7.2 pts |
Castine is highly educated: about three-quarters of adults 25 and older (74.5%) hold at least a bachelor's degree, far above the national share of 35.6%.
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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 99.2% | 89.9% | 84.9% |
| 2010–14 | 97.3% | 91.4% | 86.1% |
| 2015–19 | 98.4% | 92.6% | 87.7% |
| 2020–24 | 99.8% | 94.8% | 89.3% |
| Change | +0.7 pts | +4.8 pts | +4.3 pts |
Finishing high school is nearly universal in Castine: 99.8% 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 Castine
| Period | Castine | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 5.8% | 6.6% | 8.1% |
| 2010–14 | 9.4% | 7.6% | 9.4% |
| 2015–19 | 3.1% | 4.2% | 5.6% |
| 2020–24 | 2.7% | 3.9% | 5.4% |
| Change | −3.1 pts | −2.7 pts | −2.7 pts |
Unemployment in Castine has been low: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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).
Castine 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Castine | 2.22 | 21.2 | 4.3% | 19.6% | 51.1% | 1974 | $1,105 | 74.5% | 99.8% | 2.7% |
| West Brooksville | 1.91 | 61.2 | 3.1% | 14.8% | 52.1% | 1982 | $1,306 | 52.7% | 96.5% | 4.7% |
| Harborside | 1.91 | 60.6 | 4.3% | 13.5% | 52.2% | 1981 | $1,240 | 51.7% | 96.5% | 6.5% |
| West Penobscot | 2.12 | 56.8 | 5.7% | 14.0% | 26.9% | 1986 | $1,252 | 31.5% | 97.2% | 3.3% |
| Brooksville | 1.91 | 61.4 | 3.1% | 14.8% | 52.0% | 1982 | $1,306 | 52.6% | 96.5% | 4.7% |
| Norumbega | 1.91 | 61.4 | 3.1% | 14.8% | 52.1% | 1982 | $1,307 | 52.6% | 96.5% | 4.7% |
| South Penobscot | 2.17 | 53.4 | 10.8% | 15.8% | 32.4% | 1979 | $1,137 | 32.2% | 97.2% | 4.3% |
| Penobscot | 2.17 | 52.5 | 10.6% | 15.5% | 31.8% | 1980 | $1,126 | 33.0% | 96.6% | 4.1% |
| Islesboro | 1.90 | 57.0 | 9.4% | 8.2% | 52.9% | 1974 | $938 | 47.8% | 96.7% | 14.3% |
| Stockton Springs | 2.20 | 48.5 | 8.0% | 16.7% | 14.5% | 1988 | $1,375 | 26.8% | 96.2% | 5.7% |
| Sedgwick | 2.01 | 51.7 | 4.1% | 17.6% | 26.4% | 1983 | $1,063 | 44.3% | 96.0% | 2.2% |
All figures 2020–24.
Cities with similar populations: Lightfoot, VA · Edgar Springs, MO · Oil City, LA · Odessa, WA · North Charleroi, PA · New Germany, MN · Ursa, IL · Geary, OK · Elwood, NE · Opdyke, IL
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 Castine. 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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