Town · New Hampshire
Derry, New Hampshire
Derry, town, in Rockingham County, New Hampshire. Derry had 33,990 residents on July 1, 2025 by the Census Bureau's estimate, down 0.3% since 2020; the 2020 Census counted 34,317 and the ACS 2020-2024 5-year estimates put it at 34,116 (±23). GEOID 3301517940.
Residents, July 2025 estimate
33,990
Census Bureau estimate (no margin published)
2020 Census count: 34,317 · ACS 2020-2024: 34,116 ±23
Median household income
$108,944
±$6,839 (90% margin)
New Hampshire: $99,031
Median home value
$432,000
±$16,849 (90% margin)
New Hampshire: $402,500
Median gross rent
$1,547
±$138 (90% margin)
New Hampshire: $1,491
Where is Derry and what county is it in?
Derry is a town in Rockingham County, New Hampshire. It covers 35.5 square miles of land, 967 residents per square mile in 2020.
One place lies inside Derry: Derry (CDP, 22,879 in 2020).
Derry is in the Boston-Cambridge-Newton, MA-NH metropolitan statistical area, which takes in 7 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Derry, and is it growing?
The Census Bureau estimates that 33,990 people lived in Derry on July 1, 2025, down 0.3% since 2020, while New Hampshire grew 2.7%. The 2020 Census counted 34,317 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 34,116 (±23).
| Measure | Derry | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 34,116±23 | 319,082 | +668 |
| Households | 12,970±423 | 127,570 | no clear change |
| Average household size | 2.61±0.08 | 2.48 | no clear change |
| Housing units | 14,322±457 | 137,794 | +783 |
Derry's population since 2000
From 34,021 in 2000 to 33,990 in 2025: down 0.1%. The 2000, 2010 and 2020 figures are census counts, each for Derry as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Derry?
The median resident of Derry is 40.3 years old; 20.7% are under 18 and 15.2% are 65 or older. The largest group is non-Hispanic white residents at 88.6%, then Hispanic or Latino residents (of any race) at 4.7%. 4.8% of residents were born outside the United States.
| Measure | Derry | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.3±1.6 | 45.0 | no clear change |
| Under 18 years | 20.7%±1.5 pts | 18.5% | – |
| 65 years and over | 15.2%±1.2 pts | 20.4% | – |
| Male | 49.2%±1.7 pts | 49.7% | – |
| Hispanic or Latino (any race) | 4.7%±1.5 pts | 3.7% | no clear change |
| White alone, not Hispanic | 88.6%±2.0 pts | 89.5% | −3.9 pts |
| Black or African American alone, not Hispanic | 1.0%±0.7 pts | 0.7% | – |
| Asian alone, not Hispanic | 2.0%±1.1 pts | 1.9% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.4%±1.2 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.3%±0.4 pts | 0.5% | – |
| Born outside the United States | 4.8%±1.4 pts | 5.2% | no clear change |
| Speak a language other than English at home (age 5+) | 6.5%±1.9 pts | 6.5% | – |
| Civilian veterans (age 18+) | 8.0%±1.5 pts | 7.3% | – |
| With a disability | 14.2%±1.8 pts | 11.5% | – |
| No health insurance coverage | 5.1%±1.6 pts | 4.1% | no clear change |
| High school graduate or higher (age 25+) | 93.8%±1.4 pts | 96.1% | – |
| Bachelor's degree or higher (age 25+) | 37.4%±2.8 pts | 45.7% | +8.5 pts |
| Graduate or professional degree (age 25+) | 12.8%±1.9 pts | 17.2% | – |
| Lived in the same house a year earlier | 91.8%±2.1 pts | 91.5% | – |
| Moved from another state in the past year | 2.9%±1.2 pts | 3.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Derry earn?
Half of Derry's 12,970 households earn less than $108,944 a year (±$6,839), against $118,331 in Rockingham County and $99,031 in New Hampshire. In 2015-2019 the median was $94,192 in 2024 dollars, so it rose by $14,752 after inflation. 4.0% of residents live below the poverty line.
| Measure | Derry | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $108,944±$6,839 | $118,331 | +$14,752 |
| Mean household income | $129,022±$7,539 | $149,721 | – |
| Per capita income | $50,704±$2,641 | $61,558 | +$5,746 |
| People below the poverty line | 4.0%±1.3 pts | 4.8% | −4.1 pts |
| Children under 18 below the poverty line | 3.6%±2.9 pts | 4.6% | – |
| Households receiving SNAP | 5.1%±1.8 pts | 3.3% | – |
| Households with a computer | 97.0%±1.3 pts | 97.3% | – |
| Households with a broadband subscription | 94.4%±1.6 pts | 95.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Derry?
Owners occupy 70.2% of Derry's occupied homes and renters 29.8%. The median owner-occupied home is valued at $432,000 by its owner (±$16,849). The median renter pays $1,547 a month including utilities, and 41.0% of renters pay 35% or more of their income on rent.
| Measure | Derry | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $432,000±$16,849 | $497,500 | +$130,234 |
| Median gross rent | $1,547±$138 | $1,687 | no clear change |
| Renters paying 35% or more of income on rent | 41.0%±8.4 pts | 39.7% | no clear change |
| Median monthly owner costs, with a mortgage | $2,565±$96 | $2,669 | – |
| Owner-occupied homes | 70.2%±3.6 pts | 78.4% | +5.1 pts |
| Renter-occupied homes | 29.8%±3.6 pts | 21.6% | – |
| Housing units | 14,322±457 | 137,794 | +783 |
| Homeowner vacancy rate | 1.9%±1.6 pts | 0.5% | – |
| Rental vacancy rate | 11.9%±5.5 pts | 3.9% | – |
| Single-family detached homes | 53.9%±3.4 pts | 65.2% | – |
| Mobile homes | 2.3%±0.9 pts | 4.4% | – |
| Built 2020 or later | 1.4%±0.7 pts | 1.9% | – |
| Built 2010 to 2019 | 3.8%±1.4 pts | 8.6% | – |
| Built 1939 or earlier | 7.5%±2.1 pts | 12.5% | – |
| Households with no vehicle | 3.4%±1.2 pts | 3.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Derry building?
Builders took permits for 91 new housing units in Derry in 2025 (31 in single-family houses; the permit office reported 11 of 12 months), 2.7 per 1,000 residents against 3.6 across New Hampshire.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Derry work and get to work?
71.1% of Derry's workers drive alone and 16.0% work from home. The average trip to work takes 30.9 minutes. The unemployment rate in 2020-2024 averaged 4.0%.
| Measure | Derry | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 72.2%±2.4 pts | 67.9% | – |
| Unemployment rate | 4.0%±1.5 pts | 3.6% | no clear change |
| Drove alone to work | 71.1%±3.8 pts | 72.1% | – |
| Carpooled | 11.7%±2.9 pts | 5.5% | – |
| Public transportation | 0.2%±0.3 pts | 0.4% | – |
| Walked | 0.4%±0.4 pts | 1.3% | – |
| Worked from home | 16.0%±2.9 pts | 19.4% | +10.9 pts |
| Mean travel time to work | 30.9 min±1.8 | 28.9 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Derry?
6 census tracts lie mostly in Derry (2020 census blocks). Their median household incomes run from $71,367 (Tract 34) to $152,593 (Tract 36.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 36.01Rockingham County | 6,973 | $120,000 |
| Tract 36.02Rockingham County | 6,501 | $152,593 |
| Tract 33.02Rockingham County | 6,088 | $121,534 |
| Tract 35Rockingham County | 5,455 | $77,507 |
| Tract 34Rockingham County | 4,707 | $71,367 |
| Tract 33.01Rockingham County | 4,392 | $152,172 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Derry) · Census block assignment files
How does Derry compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, Derry is the 298th-most populous of the 16,079 U.S. towns and townships that have one and the most populous of 221 in New Hampshire.
Derry ranks 74th of 235 places in New Hampshire with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 1st | 221 |
| Growth 2020-2025 (PEP) | 176th | 187 |
| Residents per square mile | 31st | 241 |
| Median household income | 74th | 235 |
| Per capita income | 109th | 240 |
| Median home value | 73rd | 239 |
| Median gross rent | 68th | 221 |
| Poverty rate | 137th | 160 |
| Bachelor's degree or higher | 121st | 239 |
| Median age | 197th | 239 |
| Owner-occupied share | 171st | 241 |
| Work from home | 101st | 214 |
| Travel time to work | 78th | 241 |
Derry's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare Derry with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Derry?
8 of the 57 figures for Derry on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Derry are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.