Town · New Hampshire
Newmarket, New Hampshire
Newmarket, town, in Rockingham County, New Hampshire. Newmarket had 9,647 residents on July 1, 2025 by the Census Bureau's estimate, up 2.4% since 2020; the 2020 Census counted 9,430 and the ACS 2020-2024 5-year estimates put it at 9,463 (±18). GEOID 3301552340.
Residents, July 2025 estimate
9,647
Census Bureau estimate (no margin published)
2020 Census count: 9,430 · ACS 2020-2024: 9,463 ±18
Median household income
$100,845
±$13,234 (90% margin)
New Hampshire: $99,031
Median home value
$455,000
±$22,404 (90% margin)
New Hampshire: $402,500
Median gross rent
$1,671
±$69 (90% margin)
New Hampshire: $1,491
Where is Newmarket and what county is it in?
Newmarket is a town in Rockingham County, New Hampshire. It covers 12.6 square miles of land, 749 residents per square mile in 2020.
One place lies inside Newmarket: Newmarket (CDP, 5,797 in 2020).
Newmarket 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 Newmarket, and is it growing?
The Census Bureau estimates that 9,647 people lived in Newmarket on July 1, 2025, up 2.4% since 2020, in line with New Hampshire (+2.7%). The 2020 Census counted 9,430 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 9,463 (±18).
| Measure | Newmarket | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 9,463±18 | 319,082 | +400 |
| Households | 4,345±186 | 127,570 | +310 |
| Average household size | 2.17±0.09 | 2.48 | no clear change |
| Housing units | 4,500±219 | 137,794 | +311 |
Newmarket's population since 2000
From 8,027 in 2000 to 9,647 in 2025: up 20.2%. The 2000, 2010 and 2020 figures are census counts, each for Newmarket 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 Newmarket?
The median resident of Newmarket is 41.2 years old; 15.6% are under 18 and 16.1% are 65 or older. The largest group is non-Hispanic white residents at 91.1%, then non-Hispanic residents of two or more races at 5.3%. 5.0% of residents were born outside the United States.
| Measure | Newmarket | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.2±1.9 | 45.0 | +4.9 |
| Under 18 years | 15.6%±1.7 pts | 18.5% | – |
| 65 years and over | 16.1%±2.8 pts | 20.4% | – |
| Male | 49.4%±2.6 pts | 49.7% | – |
| Hispanic or Latino (any race) | 1.4%±0.9 pts | 3.7% | – |
| White alone, not Hispanic | 91.1%±2.8 pts | 89.5% | no clear change |
| Black or African American alone, not Hispanic | 0.6%±0.8 pts | 0.7% | – |
| Asian alone, not Hispanic | 1.3%±0.9 pts | 1.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.3%±2.2 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.2%±0.3 pts | 0.5% | – |
| Born outside the United States | 5.0%±1.8 pts | 5.2% | no clear change |
| Speak a language other than English at home (age 5+) | 5.9%±2.0 pts | 6.5% | – |
| Civilian veterans (age 18+) | 5.0%±1.6 pts | 7.3% | – |
| With a disability | 9.6%±2.4 pts | 11.5% | – |
| No health insurance coverage | 3.9%±1.9 pts | 4.1% | no clear change |
| High school graduate or higher (age 25+) | 97.6%±1.2 pts | 96.1% | – |
| Bachelor's degree or higher (age 25+) | 49.7%±4.6 pts | 45.7% | no clear change |
| Graduate or professional degree (age 25+) | 18.2%±3.7 pts | 17.2% | – |
| Lived in the same house a year earlier | 86.1%±3.0 pts | 91.5% | – |
| Moved from another state in the past year | 4.1%±1.8 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 Newmarket earn?
Half of Newmarket's 4,345 households earn less than $100,845 a year (±$13,234), against $118,331 in Rockingham County and $99,031 in New Hampshire. In 2015-2019 it was $90,744 in 2024 dollars; the margins of error cannot tell the two periods apart. 4.6% of residents live below the poverty line.
| Measure | Newmarket | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $100,845±$13,234 | $118,331 | no clear change |
| Mean household income | $122,515±$11,064 | $149,721 | – |
| Per capita income | $58,507±$5,285 | $61,558 | +$10,009 |
| People below the poverty line | 4.6%±1.8 pts | 4.8% | no clear change |
| Children under 18 below the poverty line | 0.0%±2.3 pts | 4.6% | – |
| Households receiving SNAP | 2.6%±1.4 pts | 3.3% | – |
| Households with a computer | 98.3%±1.2 pts | 97.3% | – |
| Households with a broadband subscription | 95.2%±2.3 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 Newmarket?
Owners occupy 52.9% of Newmarket's occupied homes and renters 47.1%. The median owner-occupied home is valued at $455,000 by its owner (±$22,404). The median renter pays $1,671 a month including utilities, and 37.0% of renters pay 35% or more of their income on rent.
| Measure | Newmarket | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $455,000±$22,404 | $497,500 | +$111,267 |
| Median gross rent | $1,671±$69 | $1,687 | +$151 |
| Renters paying 35% or more of income on rent | 37.0%±8.3 pts | 39.7% | no clear change |
| Median monthly owner costs, with a mortgage | $2,621±$149 | $2,669 | – |
| Owner-occupied homes | 52.9%±4.2 pts | 78.4% | no clear change |
| Renter-occupied homes | 47.1%±4.2 pts | 21.6% | – |
| Housing units | 4,500±219 | 137,794 | +311 |
| Homeowner vacancy rate | 0.0%±1.5 pts | 0.5% | – |
| Rental vacancy rate | 1.1%±1.7 pts | 3.9% | – |
| Single-family detached homes | 41.6%±4.3 pts | 65.2% | – |
| Mobile homes | 2.0%±1.1 pts | 4.4% | – |
| Built 2020 or later | 0.4%±0.7 pts | 1.9% | – |
| Built 2010 to 2019 | 5.2%±2.1 pts | 8.6% | – |
| Built 1939 or earlier | 18.5%±3.7 pts | 12.5% | – |
| Households with no vehicle | 1.6%±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 Newmarket building?
Builders took permits for 6 new housing units in Newmarket in 2025 (6 in single-family houses), 0.6 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 Newmarket work and get to work?
73.5% of Newmarket's workers drive alone and 17.3% work from home. The average trip to work takes 28.2 minutes.
| Measure | Newmarket | Rockingham County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 75.4%±3.8 pts | 67.9% | – |
| Unemployment rate | 1.0%±0.9 pts | 3.6% | – |
| Drove alone to work | 73.5%±3.9 pts | 72.1% | – |
| Carpooled | 6.1%±2.3 pts | 5.5% | – |
| Public transportation | 0.4%±0.5 pts | 0.4% | – |
| Walked | 1.5%±1.4 pts | 1.3% | – |
| Worked from home | 17.3%±3.5 pts | 19.4% | +13.7 pts |
| Mean travel time to work | 28.2 min±2.8 | 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 Newmarket?
3 census tracts lie mostly in Newmarket (2020 census blocks). Their median household incomes run from $79,646 (Tract 675.02) to $135,656 (Tract 675.04).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 675.02Rockingham County | 3,518 | $79,646 |
| Tract 675.04Rockingham County | 3,117 | $135,656 |
| Tract 675.03Rockingham County | 2,828 | $103,113 |
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 Newmarket) · Census block assignment files
How does Newmarket compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, Newmarket is the 1,268th-most populous of the 16,079 U.S. towns and townships that have one and the 19th-most populous of 221 in New Hampshire.
Newmarket ranks 101st 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 | 19th | 221 |
| Growth 2020-2025 (PEP) | 99th | 187 |
| Residents per square mile | 47th | 241 |
| Median household income | 101st | 235 |
| Per capita income | 61st | 240 |
| Median home value | 60th | 239 |
| Median gross rent | 46th | 221 |
| Poverty rate | 130th | 160 |
| Bachelor's degree or higher | 48th | 239 |
| Median age | 188th | 239 |
| Owner-occupied share | 224th | 241 |
| Work from home | 88th | 214 |
| Travel time to work | 114th | 241 |
Newmarket's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare Newmarket 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 Newmarket?
13 of the 57 figures for Newmarket 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 Newmarket 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.