Town · New Hampshire
Lyme, New Hampshire
Lyme, town, in Grafton County, New Hampshire. Lyme had 1,715 residents on July 1, 2025 by the Census Bureau's estimate, down 1.7% since 2020; the 2020 Census counted 1,745 and the ACS 2020-2024 5-year estimates put it at 1,710 (±167). GEOID 3300944260.
Residents, July 2025 estimate
1,715
Census Bureau estimate (no margin published)
2020 Census count: 1,745 · ACS 2020-2024: 1,710 ±167
Median household income
$133,906
±$15,102 (90% margin)
New Hampshire: $99,031
Median home value
$645,000
±$64,250 (90% margin)
New Hampshire: $402,500
Median gross rent
$1,418
±$130 (90% margin)
New Hampshire: $1,491
Where is Lyme and what county is it in?
Lyme is a town in Grafton County, New Hampshire. It covers 53.8 square miles of land, 32 residents per square mile in 2020.
Lyme is in the Lebanon-Claremont, NH-VT micropolitan statistical area, which takes in 4 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 Lyme, and is it growing?
The Census Bureau estimates that 1,715 people lived in Lyme on July 1, 2025, down 1.7% since 2020, while New Hampshire grew 2.7%. The 2020 Census counted 1,745 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,710 (±167).
| Measure | Lyme | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,710±167 | 92,120 | no clear change |
| Households | 687±80 | 37,107 | no clear change |
| Average household size | 2.47±0.26 | 2.29 | no clear change |
| Housing units | 832±86 | 51,920 | no clear change |
Lyme's population since 2000
From 1,679 in 2000 to 1,715 in 2025: up 2.1%. The 2000, 2010 and 2020 figures are census counts, each for Lyme 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 Lyme?
The median resident of Lyme is 48.6 years old; 19.5% are under 18 and 26.5% are 65 or older. The largest group is non-Hispanic white residents at 89.8%, then Hispanic or Latino residents (of any race) at 4.0%. 5.4% of residents were born outside the United States.
| Measure | Lyme | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 48.6±7.8 | 44.1 | no clear change |
| Under 18 years | 19.5%±3.4 pts | 15.6% | – |
| 65 years and over | 26.5%±4.8 pts | 23.0% | – |
| Male | 46.5%±3.2 pts | 49.6% | – |
| Hispanic or Latino (any race) | 4.0%±2.5 pts | 2.9% | no clear change |
| White alone, not Hispanic | 89.8%±3.5 pts | 87.5% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±2.0 pts | 1.1% | – |
| Asian alone, not Hispanic | 2.7%±1.8 pts | 3.5% | – |
| 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%±2.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.5%±1.7 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.0%±2.0 pts | 0.5% | – |
| Born outside the United States | 5.4%±2.9 pts | 5.6% | no clear change |
| Speak a language other than English at home (age 5+) | 3.9%±2.0 pts | 6.2% | – |
| Civilian veterans (age 18+) | 9.4%±2.7 pts | 7.2% | – |
| With a disability | 11.3%±3.0 pts | 14.0% | – |
| No health insurance coverage | 3.6%±2.7 pts | 5.4% | – |
| High school graduate or higher (age 25+) | 98.6%±2.3 pts | 94.7% | – |
| Bachelor's degree or higher (age 25+) | 70.1%±5.0 pts | 46.7% | no clear change |
| Graduate or professional degree (age 25+) | 45.0%±6.3 pts | 24.5% | – |
| Lived in the same house a year earlier | 85.8%±3.9 pts | 86.8% | – |
| Moved from another state in the past year | 7.5%±3.0 pts | 6.4% | – |
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 Lyme earn?
Half of Lyme's 687 households earn less than $133,906 a year (±$15,102), against $88,261 in Grafton County and $99,031 in New Hampshire. In 2015-2019 it was $138,607 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Lyme | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $133,906±$15,102 | $88,261 | no clear change |
| Mean household income | $209,856±$24,970 | $125,563 | – |
| Per capita income | $88,322±$12,514 | $52,790 | no clear change |
| People below the poverty line | 4.4%±3.4 pts | 10.4% | – |
| Children under 18 below the poverty line | 7.5%±9.0 pts | 10.8% | – |
| Households receiving SNAP | 1.0%±1.0 pts | 6.4% | – |
| Households with a computer | 99.0%±1.0 pts | 95.2% | – |
| Households with a broadband subscription | 96.8%±1.6 pts | 90.3% | – |
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 Lyme?
Owners occupy 80.5% of Lyme's occupied homes and renters 19.5%. The median owner-occupied home is valued at $645,000 by its owner (±$64,250). The median renter pays $1,418 a month including utilities, and 46.5% of renters pay 35% or more of their income on rent.
| Measure | Lyme | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $645,000±$64,250 | $344,500 | no clear change |
| Median gross rent | $1,418±$130 | $1,301 | no clear change |
| Renters paying 35% or more of income on rent | 46.5%±23.3 pts | 36.9% | no clear change |
| Median monthly owner costs, with a mortgage | $3,438±$296 | $2,070 | – |
| Owner-occupied homes | 80.5%±6.0 pts | 71.3% | −9.1 pts |
| Renter-occupied homes | 19.5%±6.0 pts | 28.7% | – |
| Housing units | 832±86 | 51,920 | no clear change |
| Homeowner vacancy rate | 3.6%±4.0 pts | 0.7% | – |
| Rental vacancy rate | 0.0%±22.7 pts | 4.8% | – |
| Single-family detached homes | 83.1%±5.4 pts | 61.4% | – |
| Mobile homes | 2.2%±1.5 pts | 7.2% | – |
| Built 2020 or later | 0.4%±0.5 pts | 1.5% | – |
| Built 2010 to 2019 | 5.4%±2.6 pts | 5.9% | – |
| Built 1939 or earlier | 32.0%±6.2 pts | 20.2% | – |
| Households with no vehicle | 0.9%±0.7 pts | 6.3% | – |
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 Lyme building?
Builders took permits for 3 new housing units in Lyme in 2025 (3 in single-family houses), 1.7 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 Lyme work and get to work?
64.8% of Lyme's workers drive alone and 27.2% work from home. The average trip to work takes 20.9 minutes. The unemployment rate in 2020-2024 averaged 4.9%.
| Measure | Lyme | Grafton County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.7%±5.7 pts | 60.5% | – |
| Unemployment rate | 4.9%±2.6 pts | 3.2% | no clear change |
| Drove alone to work | 64.8%±5.7 pts | 67.1% | – |
| Carpooled | 5.8%±2.6 pts | 8.6% | – |
| Public transportation | 0.4%±0.5 pts | 0.5% | – |
| Walked | 0.0%±4.1 pts | 4.4% | – |
| Worked from home | 27.2%±5.2 pts | 17.2% | +18.0 pts |
| Mean travel time to work | 20.9 min±1.6 | 22.2 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 Lyme?
No census tract lies mostly in Lyme; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9609Grafton County | 3,510 | $108,250 |
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 Lyme) · Census block assignment files
How does Lyme compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, Lyme is the 5,471st-most populous of the 16,079 U.S. towns and townships that have one and the 142nd-most populous of 221 in New Hampshire.
Lyme ranks 31st 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 | 142nd | 221 |
| Growth 2020-2025 (PEP) | 186th | 187 |
| Residents per square mile | 227th | 241 |
| Median household income | 31st | 235 |
| Per capita income | 4th | 240 |
| Median home value | 16th | 239 |
| Median gross rent | 86th | 221 |
| Bachelor's degree or higher | 5th | 239 |
| Median age | 85th | 239 |
| Owner-occupied share | 121st | 241 |
| Work from home | 14th | 214 |
| Travel time to work | 211th | 241 |
Lyme's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare Lyme 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 Lyme?
16 of the 57 figures for Lyme 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 Lyme 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.