Town · New Hampshire
New London, New Hampshire
New London, town, in Merrimack County, New Hampshire. New London had 4,411 residents on July 1, 2025 by the Census Bureau's estimate, up 0.2% since 2020; the 2020 Census counted 4,400 and the ACS 2020-2024 5-year estimates put it at 4,433 (±19). GEOID 3301352100.
Residents, July 2025 estimate
4,411
Census Bureau estimate (no margin published)
2020 Census count: 4,400 · ACS 2020-2024: 4,433 ±19
Median household income
$107,773
±$9,830 (90% margin)
New Hampshire: $99,031
Median home value
$554,100
±$64,493 (90% margin)
New Hampshire: $402,500
Median gross rent
$1,594
±$551 (90% margin)
New Hampshire: $1,491
Where is New London and what county is it in?
New London is a town in Merrimack County, New Hampshire. It covers 22.3 square miles of land, 197 residents per square mile in 2020.
One place lies inside New London: New London (CDP, 1,266 in 2020).
New London is in the Concord, NH micropolitan statistical area (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 New London, and is it growing?
The Census Bureau estimates that 4,411 people lived in New London on July 1, 2025, up 0.2% since 2020, slower than New Hampshire (+2.7%). The 2020 Census counted 4,400 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 4,433 (±19).
| Measure | New London | Merrimack County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,433±19 | 155,967 | +43 |
| Households | 1,669±112 | 60,901 | no clear change |
| Average household size | 2.15±0.14 | 2.46 | no clear change |
| Housing units | 2,417±164 | 66,497 | no clear change |
New London's population since 2000
From 4,116 in 2000 to 4,411 in 2025: up 7.2%. The 2000, 2010 and 2020 figures are census counts, each for New London 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 New London?
The median resident of New London is 52.8 years old; 12.0% are under 18 and 37.5% are 65 or older. The largest group is non-Hispanic white residents at 88.9%, then non-Hispanic residents of two or more races at 3.8%. 6.3% of residents were born outside the United States.
| Measure | New London | Merrimack County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 52.8±6.7 | 42.9 | +10.8 |
| Under 18 years | 12.0%±3.0 pts | 18.4% | – |
| 65 years and over | 37.5%±5.0 pts | 19.9% | – |
| Male | 47.7%±3.9 pts | 49.8% | – |
| Hispanic or Latino (any race) | 2.8%±2.3 pts | 2.7% | – |
| White alone, not Hispanic | 88.9%±4.1 pts | 90.1% | −6.0 pts |
| Black or African American alone, not Hispanic | 1.2%±0.8 pts | 1.6% | – |
| Asian alone, not Hispanic | 3.3%±2.5 pts | 1.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.8 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.8 pts | 0.1% | – |
| Two or more races, not Hispanic | 3.8%±1.8 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.0%±0.8 pts | 0.4% | – |
| Born outside the United States | 6.3%±3.0 pts | 4.4% | no clear change |
| Speak a language other than English at home (age 5+) | 4.6%±2.9 pts | 5.3% | – |
| Civilian veterans (age 18+) | 7.6%±2.6 pts | 8.1% | – |
| With a disability | 14.6%±3.5 pts | 14.7% | – |
| No health insurance coverage | 1.4%±1.0 pts | 5.1% | – |
| High school graduate or higher (age 25+) | 98.3%±1.5 pts | 94.5% | – |
| Bachelor's degree or higher (age 25+) | 65.6%±6.5 pts | 38.9% | no clear change |
| Graduate or professional degree (age 25+) | 32.7%±5.2 pts | 16.2% | – |
| Lived in the same house a year earlier | 88.2%±4.8 pts | 90.1% | – |
| Moved from another state in the past year | 7.4%±3.6 pts | 2.7% | – |
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 New London earn?
Half of New London's 1,669 households earn less than $107,773 a year (±$9,830), against $97,004 in Merrimack County and $99,031 in New Hampshire. In 2015-2019 it was $111,804 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | New London | Merrimack County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $107,773±$9,830 | $97,004 | no clear change |
| Mean household income | $138,830±$14,008 | $123,673 | – |
| Per capita income | $54,282±$5,556 | $49,044 | no clear change |
| People below the poverty line | 0.9%±0.7 pts | 7.6% | – |
| Children under 18 below the poverty line | 0.0%±6.4 pts | 7.7% | – |
| Households receiving SNAP | 0.0%±2.1 pts | 7.0% | – |
| Households with a computer | 93.8%±4.1 pts | 96.1% | – |
| Households with a broadband subscription | 92.3%±3.9 pts | 92.8% | – |
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 New London?
Owners occupy 90.8% of New London's occupied homes and renters 9.2%. The median owner-occupied home is valued at $554,100 by its owner (±$64,493). The median renter pays $1,594 a month including utilities, and 38.9% of renters pay 35% or more of their income on rent.
| Measure | New London | Merrimack County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $554,100±$64,493 | $367,600 | +$97,020 |
| Median gross rent | $1,594±$551 | $1,360 | no clear change |
| Renters paying 35% or more of income on rent | 38.9%±21.2 pts | 36.6% | no clear change |
| Median monthly owner costs, with a mortgage | $2,411±$184 | $2,324 | – |
| Owner-occupied homes | 90.8%±4.2 pts | 73.5% | +9.8 pts |
| Renter-occupied homes | 9.2%±4.2 pts | 26.5% | – |
| Housing units | 2,417±164 | 66,497 | no clear change |
| Homeowner vacancy rate | 0.3%±0.5 pts | 0.2% | – |
| Rental vacancy rate | 15.0%±14.5 pts | 4.5% | – |
| Single-family detached homes | 80.7%±4.9 pts | 63.1% | – |
| Mobile homes | 0.0%±1.4 pts | 6.8% | – |
| Built 2020 or later | 1.1%±0.9 pts | 1.2% | – |
| Built 2010 to 2019 | 6.4%±3.0 pts | 6.5% | – |
| Built 1939 or earlier | 22.1%±6.0 pts | 24.3% | – |
| Households with no vehicle | 4.5%±3.2 pts | 4.2% | – |
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 New London building?
Builders took permits for 14 new housing units in New London in 2025 (14 in single-family houses), 3.2 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 New London work and get to work?
69.4% of New London's workers drive alone and 14.7% work from home. The average trip to work takes 24.6 minutes.
| Measure | New London | Merrimack County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 44.1%±5.1 pts | 64.5% | – |
| Unemployment rate | 3.8%±2.6 pts | 3.1% | – |
| Drove alone to work | 69.4%±7.9 pts | 73.1% | – |
| Carpooled | 4.6%±2.6 pts | 8.2% | – |
| Public transportation | 0.0%±2.2 pts | 0.2% | – |
| Walked | 7.9%±4.1 pts | 2.8% | – |
| Worked from home | 14.7%±7.7 pts | 14.4% | no clear change |
| Mean travel time to work | 24.6 min±4.3 | 26.6 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 New London?
2 census tracts lie mostly in New London (2020 census blocks). Their median household incomes run from $104,167 (Tract 410.01) to $116,950 (Tract 410.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 410.02Merrimack County | 2,460 | $116,950 |
| Tract 410.01Merrimack County | 1,973 | $104,167 |
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 New London) · Census block assignment files
How does New London compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, New London is the 2,571st-most populous of the 16,079 U.S. towns and townships that have one and the 77th-most populous of 221 in New Hampshire.
New London ranks 78th 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 | 77th | 221 |
| Growth 2020-2025 (PEP) | 164th | 187 |
| Residents per square mile | 119th | 241 |
| Median household income | 78th | 235 |
| Per capita income | 82nd | 240 |
| Median home value | 22nd | 239 |
| Median gross rent | 60th | 221 |
| Bachelor's degree or higher | 11th | 239 |
| Median age | 44th | 239 |
| Owner-occupied share | 59th | 241 |
| Work from home | 119th | 214 |
| Travel time to work | 164th | 241 |
New London's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare New London 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 New London?
17 of the 57 figures for New London 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 New London 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.