Population 7,510 · Census ACS 2020–24
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Population and households in Seabrook
Household size in Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.18 | 2.54 | 2.52 | 2.68 |
| 2010–14 | 2.28 | 2.59 | 2.50 | 2.73 |
| 2015–19 | 2.32 | 2.60 | 2.49 | 2.71 |
| 2020–24 | 2.20 | 2.55 | 2.51 | 2.65 |
| Change | +0.02 | +0.01 | −0.01 | −0.03 |
Seabrook is a place of small households, averaging 2.20 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Households are largest in the west and smallest in the northeast. Seabrook has smaller households than at least four in five New Hampshire cities.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 47.1 | 38.9 | 40.6 | 37.7 |
| 2010–14 | 47.9 | 39.7 | 42.1 | 38.6 |
| 2015–19 | 51.9 | 40.4 | 43.3 | 39.6 |
| 2020–24 | 53.2 | 40.8 | 44.2 | 40.1 |
| Change | +6.2 | +1.9 | +3.5 | +2.3 |
With a median age of 53.2, Seabrook is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. The median age has climbed from 47.1 in 2006–10, in line with the national trend. Of the 68 New Hampshire cities with 5,000+ people, only four are older.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.5% | 10.4% | 9.4% | 12.3% |
| 2010–14 | 6.5% | 10.2% | 9.5% | 12.3% |
| 2015–19 | 6.5% | 9.6% | 8.9% | 11.6% |
| 2020–24 | 5.7% | 9.7% | 8.5% | 11.6% |
| Change | −6.8 pts | −0.7 pts | −0.9 pts | −0.6 pts |
Single parents head only 5.7% of households in Seabrook, well below the national share of 11.6%. The single-parent share has fallen 6.8 points since 2006–10, a much bigger shift than 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 Seabrook
Renters in Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.3% | 36.8% | 27.4% | 33.3% |
| 2010–14 | 35.1% | 38.5% | 29.0% | 35.6% |
| 2015–19 | 30.4% | 38.3% | 28.9% | 36.0% |
| 2020–24 | 31.1% | 38.4% | 27.2% | 34.8% |
| Change | +2.8 pts | +1.6 pts | −0.1 pts | +1.5 pts |
Just over three in ten households in Seabrook rent their homes (31.1%), a little below the national share of 34.8%; the rest own. More than four in ten owners (43.3%) have paid off their mortgages, above the national share of 39.8%. Renting is most common in the northwest and least common in the east. The renter share has risen 2.8 points since 2006–10, as it has nationally.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.4% | 8.1% | 12.6% | 11.4% |
| 2010–14 | 19.6% | 7.4% | 12.5% | 11.4% |
| 2015–19 | 18.9% | 7.3% | 12.7% | 11.1% |
| 2020–24 | 12.8% | 6.7% | 11.7% | 9.6% |
| Change | −2.6 pts | −1.4 pts | −0.9 pts | −1.8 pts |
Vacancy runs high in Seabrook: 12.8% of homes are empty, against 9.6% nationally. The count includes vacation homes and homes between owners or tenants, not just abandoned ones. Vacancy is down 2.6 points from 2006–10, in line with the national trend.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 1979 | 1958 | 1971 | 1974 |
| 2010–14 | 1979 | 1959 | 1972 | 1975 |
| 2015–19 | 1979 | 1961 | 1973 | 1977 |
| 2020–24 | 1985 | 1964 | 1976 | 1980 |
| Change | +6 | +6 | +5 | +6 |
The housing in Seabrook is a little younger than the country's: half of it was built after 1985, against 1980 nationally. The median year built has moved up from 1979 in 2006–10, a sign of steady new building. Newer construction is concentrated in the south, while the east has the oldest housing.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,046 | $1,171 | $1,018 | $965 |
| 2010–14 | $1,078 | $1,251 | $1,094 | $1,040 |
| 2015–19 | $1,309 | $1,537 | $1,224 | $1,213 |
| 2020–24 | $1,549 | $2,051 | $1,597 | $1,571 |
| Change | +$503 | +$881 | +$580 | +$606 |
Rent in Seabrook runs $1,549 a month at the median, utilities included, close to the U.S. median of $1,571. Rents here are lower than in the Boston area overall ($2,051). Rent has climbed $503 a month since 2006–10, up 48%, a slower climb than the nation's. Rent takes 34.7% of the typical renter's income, 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 Seabrook
Bachelor's degrees in Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.8% | 42.2% | 33.5% | 28.4% |
| 2010–14 | 14.0% | 44.1% | 35.0% | 29.6% |
| 2015–19 | 18.5% | 48.2% | 37.6% | 32.1% |
| 2020–24 | 27.5% | 51.9% | 41.1% | 35.6% |
| Change | +9.7 pts | +9.7 pts | +7.6 pts | +7.2 pts |
More than a quarter of adults 25 and older in Seabrook (27.5%) have a bachelor's degree or higher, below the national share of 35.6%. Since 2006–10, the share with a degree has risen 9.7 points, mirroring the country. College graduates are most concentrated in the east and least in the south.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 85.9% | 89.8% | 91.0% | 84.9% |
| 2010–14 | 90.7% | 90.6% | 92.0% | 86.1% |
| 2015–19 | 90.8% | 91.5% | 93.1% | 87.7% |
| 2020–24 | 93.1% | 91.8% | 94.5% | 89.3% |
| Change | +7.2 pts | +2.1 pts | +3.5 pts | +4.3 pts |
High school completion in Seabrook is above the national rate: 93.1% of adults have a diploma, against 89.3%. That is in line with the rest of the Boston area. The share with a diploma is up 7.2 points from 2006–10, as it has nationally.
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 Seabrook
| Period | Seabrook | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.6% | 7.0% | 5.9% | 8.1% |
| 2010–14 | 8.3% | 8.0% | 6.6% | 9.4% |
| 2015–19 | 4.9% | 4.6% | 3.6% | 5.6% |
| 2020–24 | 8.6% | 4.9% | 3.4% | 5.4% |
| Change | +4.0 pts | −2.1 pts | −2.5 pts | −2.7 pts |
Unemployment in Seabrook runs well above the national rate: 8.6% of the labor force was out of work and looking, against 5.4%. Only one other New Hampshire city with 5,000+ people has higher unemployment. Since 2006–10, unemployment has risen 4.0 points, even as the national rate fell.
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).
Seabrook 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Seabrook | 2.20 | 53.2 | 5.7% | 31.1% | 12.8% | 1985 | $1,549 | 27.5% | 93.1% | 8.6% |
| Salisbury | 2.29 | 50.2 | 5.5% | 28.6% | 10.2% | 1979 | $1,858 | 45.1% | 93.6% | 5.7% |
| Hampton Falls | 2.55 | 47.2 | 3.6% | 19.9% | 6.4% | 1983 | $1,606 | 48.8% | 96.5% | 3.0% |
| Hampton | 2.10 | 55.4 | 5.5% | 26.0% | 16.1% | 1978 | $1,725 | 43.6% | 95.2% | 5.6% |
| Amesbury Town | 2.31 | 44.4 | 10.2% | 31.4% | 6.1% | 1968 | $1,761 | 44.9% | 95.8% | 3.1% |
| Newburyport | 2.30 | 49.7 | 4.7% | 22.6% | 8.2% | 1957 | $1,553 | 67.7% | 97.7% | 5.3% |
| South Hampton | 2.96 | 45.1 | 4.5% | 11.4% | 1.8% | 1976 | $1,889 | 52.4% | 98.6% | 2.5% |
| Plum Island | 1.77 | 60.2 | 4.6% | 27.3% | 38.1% | 1974 | $1,548 | 50.9% | 89.1% | 9.9% |
| North Hampton Center | 2.66 | 46.8 | 6.1% | 10.1% | 5.8% | 1980 | $1,805 | 58.0% | 91.9% | 2.2% |
| Newbury | 2.22 | 58.6 | 3.3% | 9.8% | 24.3% | 1948 | $1,703 | 65.1% | 99.9% | 3.2% |
| Amesbury | 1.87 | 59.5 | 3.3% | 0.0% | 2.9% | 1996 | $1,352 | 42.3% | 93.7% | 0.0% |
All figures 2020–24.
Cities with similar populations: Schuyler, NE · Hilmar, CA · Hinckley, OH · Hitchcock, TX · Hobart, WA · Hodgenville, KY · Holdenville, OK · Lagrange, OH · Royston, GA · Salamanca, NY
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 Seabrook. 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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