Population 827 · Census ACS 2020–24
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Population and households in New Castle
Household size in New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 1.89 | 2.54 | 2.52 | 2.68 |
| 2010–14 | 2.14 | 2.59 | 2.50 | 2.73 |
| 2015–19 | 1.92 | 2.60 | 2.49 | 2.71 |
| 2020–24 | 2.06 | 2.55 | 2.51 | 2.65 |
| Change | +0.17 | +0.01 | −0.01 | −0.03 |
New Castle is a place of small households, averaging 2.06 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has climbed from 1.89 in 2006–10, 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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 55.1 | 38.9 | 40.6 | 37.7 |
| 2010–14 | 55.9 | 39.7 | 42.1 | 38.6 |
| 2015–19 | 61.6 | 40.4 | 43.3 | 39.6 |
| 2020–24 | 62.8 | 40.8 | 44.2 | 40.1 |
| Change | +7.7 | +1.9 | +3.5 | +2.3 |
New Castle skews older: half of its residents are older than 62.8, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.5% | 10.4% | 9.4% | 12.3% |
| 2010–14 | 6.2% | 10.2% | 9.5% | 12.3% |
| 2015–19 | 3.7% | 9.6% | 8.9% | 11.6% |
| 2020–24 | 0.7% | 9.7% | 8.5% | 11.6% |
| Change | −1.7 pts | −0.7 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in New Castle: 0.7% 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 New Castle
Renters in New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.4% | 36.8% | 27.4% | 33.3% |
| 2010–14 | 23.1% | 38.5% | 29.0% | 35.6% |
| 2015–19 | 10.3% | 38.3% | 28.9% | 36.0% |
| 2020–24 | 7.0% | 38.4% | 27.2% | 34.8% |
| Change | −10.4 pts | +1.6 pts | −0.1 pts | +1.5 pts |
Only 7.0% of households in New Castle rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. More than half of owners (55.0%) 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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.4% | 8.1% | 12.6% | 11.4% |
| 2010–14 | 17.2% | 7.4% | 12.5% | 11.4% |
| 2015–19 | 23.1% | 7.3% | 12.7% | 11.1% |
| 2020–24 | 13.9% | 6.7% | 11.7% | 9.6% |
| Change | −1.4 pts | −1.4 pts | −0.9 pts | −1.8 pts |
Vacant homes make up 13.9% of the housing in New Castle, 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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 1954 | 1958 | 1971 | 1974 |
| 2010–14 | 1970 | 1959 | 1972 | 1975 |
| 2015–19 | 1964 | 1961 | 1973 | 1977 |
| 2020–24 | 1975 | 1964 | 1976 | 1980 |
| Change | +21 | +6 | +5 | +6 |
Housing in New Castle leans a little older: the median home dates to 1975, against 1980 nationally. Locally, though, homes here are newer than in the wider Boston area, where the median home dates to 1964.
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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,500 | $1,171 | $1,018 | $965 |
| 2010–14 | $1,699 | $1,251 | $1,094 | $1,040 |
| 2015–19 | $2,567 | $1,537 | $1,224 | $1,213 |
| 2020–24 | $3,501 | $2,051 | $1,597 | $1,571 |
| Change | +$2,001 | +$881 | +$580 | +$606 |
The median renter in New Castle pays $3,501 a month for rent and utilities, well above the national median of $1,571. The typical renter here spends 25.0% 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 New Castle
Bachelor's degrees in New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 71.5% | 42.2% | 33.5% | 28.4% |
| 2010–14 | 66.7% | 44.1% | 35.0% | 29.6% |
| 2015–19 | 65.2% | 48.2% | 37.6% | 32.1% |
| 2020–24 | 68.8% | 51.9% | 41.1% | 35.6% |
| Change | −2.7 pts | +9.7 pts | +7.6 pts | +7.2 pts |
College graduates are unusually common in New Castle: 68.8% 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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 99.1% | 89.8% | 91.0% | 84.9% |
| 2010–14 | 99.4% | 90.6% | 92.0% | 86.1% |
| 2015–19 | 99.6% | 91.5% | 93.1% | 87.7% |
| 2020–24 | 95.0% | 91.8% | 94.5% | 89.3% |
| Change | −4.1 pts | +2.1 pts | +3.5 pts | +4.3 pts |
High school completion is high in New Castle: 95.0% 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 New Castle
| Period | New Castle | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.4% | 7.0% | 5.9% | 8.1% |
| 2010–14 | 5.6% | 8.0% | 6.6% | 9.4% |
| 2015–19 | 1.0% | 4.6% | 3.6% | 5.6% |
| 2020–24 | 0.0% | 4.9% | 3.4% | 5.4% |
| Change | −3.4 pts | −2.1 pts | −2.5 pts | −2.7 pts |
The survey found almost no one in New Castle 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).
New Castle 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| New Castle | 2.06 | 62.8 | 0.7% | 7.0% | 13.9% | 1975 | $3,501 | 68.8% | 95.0% | 0.0% |
| Kittery | 2.11 | 43.0 | 5.2% | 36.6% | 8.9% | 1961 | $1,841 | 45.1% | 95.3% | 4.6% |
| Kittery Point | 2.09 | 57.2 | 5.4% | 20.7% | 11.3% | 1968 | $2,103 | 52.3% | 98.6% | 7.3% |
| Portsmouth | 2.14 | 44.1 | 5.4% | 47.2% | 5.6% | 1959 | $1,977 | 64.6% | 97.5% | 2.4% |
| Rye | 2.40 | 54.3 | 3.5% | 14.7% | 21.1% | 1974 | $1,797 | 62.9% | 97.6% | 4.3% |
| Eliot | 2.32 | 50.8 | 11.1% | 20.1% | 4.7% | 1973 | $1,854 | 45.0% | 99.6% | 3.8% |
| York | 2.56 | 48.3 | 3.1% | 18.7% | 27.7% | 1976 | $1,491 | 55.1% | 98.8% | 2.3% |
| West Rye | 2.30 | 49.9 | 2.2% | 9.3% | 4.1% | 1988 | $2,121 | 48.4% | 96.9% | 1.7% |
| Rye Beach | 2.44 | 56.5 | 3.4% | 6.6% | 17.3% | 1981 | $1,775 | 55.9% | 96.6% | 5.5% |
| Greenland | 2.50 | 48.8 | 3.4% | 7.0% | 4.5% | 1987 | $2,442 | 61.4% | 98.1% | 2.4% |
| Newington | 2.71 | 44.1 | 2.8% | 11.0% | 1.8% | 1980 | $2,430 | 77.1% | 99.5% | 1.4% |
All figures 2020–24.
Cities with similar populations: Wausa, NE · Brownlow, WV · Brownville, NY · Cades, SC · Campton, GA · Clarkson, NE · Cokesbury, NC · Crabtree, OR · Dale, PA · Dares Beach, MD
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 New Castle. 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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