Population 25,789 · Census ACS 2020–24
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Population and households in Londonderry
Household size in Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.90 | 2.54 | 2.52 | 2.68 |
| 2010–14 | 2.78 | 2.59 | 2.50 | 2.73 |
| 2015–19 | 2.82 | 2.60 | 2.49 | 2.71 |
| 2020–24 | 2.73 | 2.55 | 2.51 | 2.65 |
| Change | −0.16 | +0.01 | −0.01 | −0.03 |
Households in Londonderry average 2.73 people, about the same as the country as a whole (2.65). The typical household here is bigger than in the Boston area as a whole, where it has 2.55 people. Since 2006–10, household size has dropped from 2.90, a much bigger shift than nationally.
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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.4 | 38.9 | 40.6 | 37.7 |
| 2010–14 | 42.0 | 39.7 | 42.1 | 38.6 |
| 2015–19 | 42.0 | 40.4 | 43.3 | 39.6 |
| 2020–24 | 42.3 | 40.8 | 44.2 | 40.1 |
| Change | +2.9 | +1.9 | +3.5 | +2.3 |
The median resident of Londonderry is 42.3 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has climbed from 39.4, in line with the national trend. The youngest areas are in the northwest, the oldest in the southwest.
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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.6% | 10.4% | 9.4% | 12.3% |
| 2010–14 | 8.8% | 10.2% | 9.5% | 12.3% |
| 2015–19 | 8.6% | 9.6% | 8.9% | 11.6% |
| 2020–24 | 9.2% | 9.7% | 8.5% | 11.6% |
| Change | +1.6 pts | −0.7 pts | −0.9 pts | −0.6 pts |
Single-parent households are less common in Londonderry than nationally: 9.2%, against 11.6%. That is in line with the rest of the Boston area. The single-parent share has risen 1.6 points since 2006–10, even as the national share fell.
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 Londonderry
Renters in Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.8% | 36.8% | 27.4% | 33.3% |
| 2010–14 | 13.2% | 38.5% | 29.0% | 35.6% |
| 2015–19 | 14.6% | 38.3% | 28.9% | 36.0% |
| 2020–24 | 14.1% | 38.4% | 27.2% | 34.8% |
| Change | +4.3 pts | +1.6 pts | −0.1 pts | +1.5 pts |
Only 14.1% of households in Londonderry rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 31.3% have no mortgage at all, below the national share of 39.8%. Rentals cluster in the north; owners are most common in the southwest. The renter share is up 4.3 points from 2006–10, in line with the national trend.
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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.3% | 8.1% | 12.6% | 11.4% |
| 2010–14 | 4.8% | 7.4% | 12.5% | 11.4% |
| 2015–19 | 4.4% | 7.3% | 12.7% | 11.1% |
| 2020–24 | 4.6% | 6.7% | 11.7% | 9.6% |
| Change | −1.6 pts | −1.4 pts | −0.9 pts | −1.8 pts |
Only 4.6% of homes in Londonderry are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Vacancy is down 1.6 points from 2006–10, as it has nationally.
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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 1982 | 1958 | 1971 | 1974 |
| 2010–14 | 1982 | 1959 | 1972 | 1975 |
| 2015–19 | 1985 | 1961 | 1973 | 1977 |
| 2020–24 | 1988 | 1964 | 1976 | 1980 |
| Change | +6 | +6 | +5 | +6 |
Londonderry has newer housing than the country as a whole: the median home was built in 1988, versus 1980 nationally. The median year built has moved up from 1982 in 2006–10, a sign of steady new building. Newer construction is concentrated in the north, while the southeast 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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,088 | $1,171 | $1,018 | $965 |
| 2010–14 | $1,325 | $1,251 | $1,094 | $1,040 |
| 2015–19 | $1,542 | $1,537 | $1,224 | $1,213 |
| 2020–24 | $1,928 | $2,051 | $1,597 | $1,571 |
| Change | +$840 | +$881 | +$580 | +$606 |
A typical rental in Londonderry costs $1,928 a month with utilities, well above the national median of $1,571. Even so, rents here are lower than in the Boston area as a whole ($2,051). Rents are up $840 a month from 2006–10, a 77% jump, faster than rents rose nationally. The typical renter here spends 32.4% of household income on rent, just over the 30% mark often used to define affordable rent.
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 Londonderry
Bachelor's degrees in Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 40.7% | 42.2% | 33.5% | 28.4% |
| 2010–14 | 42.5% | 44.1% | 35.0% | 29.6% |
| 2015–19 | 43.1% | 48.2% | 37.6% | 32.1% |
| 2020–24 | 48.2% | 51.9% | 41.1% | 35.6% |
| Change | +7.5 pts | +9.7 pts | +7.6 pts | +7.2 pts |
College graduates are unusually common in Londonderry: 48.2% 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. Even so, the share is lower than in the wider Boston area (51.9%). Since 2006–10, the share with a degree has risen 7.5 points, as it has nationally.
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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 94.9% | 89.8% | 91.0% | 84.9% |
| 2010–14 | 95.2% | 90.6% | 92.0% | 86.1% |
| 2015–19 | 96.1% | 91.5% | 93.1% | 87.7% |
| 2020–24 | 97.1% | 91.8% | 94.5% | 89.3% |
| Change | +2.2 pts | +2.1 pts | +3.5 pts | +4.3 pts |
Finishing high school is nearly universal in Londonderry: 97.1% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 2.2 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 Londonderry
| Period | Londonderry | Boston area | New Hampshire | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.0% | 7.0% | 5.9% | 8.1% |
| 2010–14 | 6.3% | 8.0% | 6.6% | 9.4% |
| 2015–19 | 3.0% | 4.6% | 3.6% | 5.6% |
| 2020–24 | 4.8% | 4.9% | 3.4% | 5.4% |
| Change | −2.2 pts | −2.1 pts | −2.5 pts | −2.7 pts |
At 4.8%, unemployment in Londonderry is close to the national rate of 5.4%. Unemployment has fallen 2.2 points since 2006–10, mirroring the country. 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).
Londonderry 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Londonderry | 2.73 | 42.3 | 9.2% | 14.1% | 4.6% | 1988 | $1,928 | 48.2% | 97.1% | 4.8% |
| North Londonderry | 2.65 | 39.8 | 23.6% | 25.2% | 5.7% | 2005 | $1,207 | 41.8% | 98.4% | 3.3% |
| Derry | 2.71 | 40.6 | 11.7% | 30.2% | 9.7% | 1982 | $1,715 | 37.3% | 94.0% | 3.4% |
| Litchfield | 2.81 | 43.9 | 5.5% | 12.1% | 2.5% | 1990 | $1,834 | 45.8% | 94.9% | 4.4% |
| East Merrimack | 1.94 | 42.1 | 8.5% | 29.6% | 6.3% | 1986 | $2,019 | 42.3% | 95.8% | 0.1% |
| Windham | 3.06 | 41.7 | 7.7% | 6.2% | 4.9% | 1995 | $3,217 | 63.3% | 97.5% | 5.1% |
| Merrimack | 2.79 | 42.2 | 6.5% | 6.3% | 3.5% | 1984 | $1,900 | 51.6% | 97.0% | 2.5% |
| Hudson | 2.56 | 45.9 | 5.9% | 18.2% | 3.6% | 1982 | $1,790 | 33.1% | 94.9% | 4.1% |
| Bedford | 2.91 | 46.3 | 7.6% | 17.4% | 3.5% | 1989 | $2,133 | 63.9% | 97.2% | 1.6% |
| Auburn | 3.05 | 44.1 | 8.8% | 5.0% | 7.5% | 1985 | $1,823 | 54.6% | 94.5% | 1.2% |
| Manchester | 2.34 | 39.3 | 13.1% | 51.0% | 7.2% | 1963 | $1,639 | 33.5% | 89.6% | 2.9% |
All figures 2020–24.
Cities with similar populations: Perkasie, PA · Manchester, TN · Maplewood, NJ · Marietta, OH · Marion, NC · Maumelle, AR · Maywood, CA · Newport, RI · Onalaska, WI · Palatka, FL
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 Londonderry. 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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