Town · New Hampshire
Lempster, New Hampshire
Lempster, town, in Sullivan County, New Hampshire. Lempster had 1,162 residents on July 1, 2025 by the Census Bureau's estimate, up 4.5% since 2020; the 2020 Census counted 1,118 and the ACS 2020-2024 5-year estimates put it at 953 (±182). GEOID 3301941700.
Residents, July 2025 estimate
1,162
Census Bureau estimate (no margin published)
2020 Census count: 1,118 · ACS 2020-2024: 953 ±182
Median household income
$86,607
±$11,858 (90% margin)
New Hampshire: $99,031
Median home value
$241,900
±$28,526 (90% margin)
New Hampshire: $402,500
Median gross rent
not published
New Hampshire: $1,491
Where is Lempster and what county is it in?
Lempster is a town in Sullivan County, New Hampshire. It covers 32.3 square miles of land, 35 residents per square mile in 2020.
Lempster 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 Lempster, and is it growing?
The Census Bureau estimates that 1,162 people lived in Lempster on July 1, 2025, up 4.5% since 2020, faster than New Hampshire (+2.7%). The 2020 Census counted 1,118 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 953 (±182).
| Measure | Lempster | Sullivan County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 953±182 | 43,715 | no clear change |
| Households | 337±61 | 16,618 | no clear change |
| Average household size | 2.83±0.45 | 2.59 | no clear change |
| Housing units | 612±92 | 21,958 | no clear change |
Lempster's population since 2000
From 971 in 2000 to 1,162 in 2025: up 19.7%. The 2000, 2010 and 2020 figures are census counts, each for Lempster 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 Lempster?
The median resident of Lempster is 50.8 years old; 12.8% are under 18 and 25.4% are 65 or older. The largest group is non-Hispanic white residents at 90.2%, then non-Hispanic residents of two or more races at 9.4%.
| Measure | Lempster | Sullivan County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 50.8±7.2 | 47.0 | no clear change |
| Under 18 years | 12.8%±4.3 pts | 17.7% | – |
| 65 years and over | 25.4%±6.4 pts | 23.5% | – |
| Male | 53.9%±5.8 pts | 50.4% | – |
| Hispanic or Latino (any race) | 0.2%±0.4 pts | 2.1% | – |
| White alone, not Hispanic | 90.2%±5.6 pts | 91.4% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±3.6 pts | 0.7% | – |
| Asian alone, not Hispanic | 0.0%±3.6 pts | 0.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.2 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±3.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 9.4%±5.6 pts | 5.1% | – |
| Some other race alone, not Hispanic | 0.0%±3.6 pts | 0.3% | – |
| Born outside the United States | 0.5%±0.8 pts | 2.1% | – |
| Speak a language other than English at home (age 5+) | 0.0%±3.7 pts | 1.8% | – |
| Civilian veterans (age 18+) | 9.1%±4.3 pts | 10.1% | – |
| With a disability | 14.0%±5.2 pts | 16.5% | – |
| No health insurance coverage | 3.4%±2.5 pts | 6.0% | – |
| High school graduate or higher (age 25+) | 89.9%±5.7 pts | 92.1% | – |
| Bachelor's degree or higher (age 25+) | 28.5%±7.8 pts | 30.3% | no clear change |
| Graduate or professional degree (age 25+) | 9.0%±3.7 pts | 11.5% | – |
| Lived in the same house a year earlier | 86.9%±6.3 pts | 90.8% | – |
| Moved from another state in the past year | 1.9%±1.7 pts | 2.2% | – |
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 Lempster earn?
Half of Lempster's 337 households earn less than $86,607 a year (±$11,858), against $80,858 in Sullivan County and $99,031 in New Hampshire. In 2015-2019 it was $86,341 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Lempster | Sullivan County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $86,607±$11,858 | $80,858 | no clear change |
| Mean household income | $95,612±$10,692 | $105,975 | – |
| Per capita income | $40,048±$4,835 | $44,514 | no clear change |
| People below the poverty line | 7.2%±6.4 pts | 10.1% | – |
| Children under 18 below the poverty line | 18.9%±17.1 pts | 12.1% | – |
| Households receiving SNAP | 13.9%±7.7 pts | 8.3% | – |
| Households with a computer | 95.3%±4.7 pts | 93.0% | – |
| Households with a broadband subscription | 86.9%±7.8 pts | 87.1% | – |
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 Lempster?
Owners occupy 98.2% of Lempster's occupied homes and renters 1.8%. The median owner-occupied home is valued at $241,900 by its owner (±$28,526).
| Measure | Lempster | Sullivan County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $241,900±$28,526 | $268,700 | no clear change |
| Renters paying 35% or more of income on rent | 0.0%±100.0 pts | 43.3% | – |
| Median monthly owner costs, with a mortgage | $1,459±$113 | $1,904 | – |
| Owner-occupied homes | 98.2%±2.2 pts | 75.4% | no clear change |
| Renter-occupied homes | 1.8%±2.2 pts | 24.6% | – |
| Housing units | 612±92 | 21,958 | no clear change |
| Homeowner vacancy rate | 0.9%±1.2 pts | 0.7% | – |
| Rental vacancy rate | 0.0%±76.9 pts | 6.1% | – |
| Single-family detached homes | 88.2%±6.2 pts | 73.9% | – |
| Mobile homes | 10.9%±6.1 pts | 7.7% | – |
| Built 2020 or later | 0.5%±0.6 pts | 0.9% | – |
| Built 2010 to 2019 | 7.5%±4.4 pts | 3.8% | – |
| Built 1939 or earlier | 19.6%±6.5 pts | 23.7% | – |
| Households with no vehicle | 2.1%±2.5 pts | 5.3% | – |
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 Lempster building?
Builders took permits for 1 new housing units in Lempster in 2025 (1 in single-family houses), 0.9 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 Lempster work and get to work?
81.6% of Lempster's workers drive alone and 5.0% work from home. The average trip to work takes 37.3 minutes.
| Measure | Lempster | Sullivan County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 63.5%±7.0 pts | 59.9% | – |
| Unemployment rate | 1.7%±2.0 pts | 3.1% | – |
| Drove alone to work | 81.6%±6.1 pts | 77.2% | – |
| Carpooled | 13.4%±5.5 pts | 8.4% | – |
| Public transportation | 0.0%±6.5 pts | 0.1% | – |
| Walked | 0.0%±6.5 pts | 2.3% | – |
| Worked from home | 5.0%±2.7 pts | 10.2% | −10.6 pts |
| Mean travel time to work | 37.3 min±4.1 | 26.1 min | +6.4 min |
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 Lempster?
No census tract lies mostly in Lempster; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9755Sullivan County | 3,203 | $86,650 |
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 Lempster) · Census block assignment files
How does Lempster compare with other places in New Hampshire?
By the Census Bureau's July 2025 estimates, Lempster is the 7,031st-most populous of the 16,079 U.S. towns and townships that have one and the 167th-most populous of 221 in New Hampshire.
Lempster ranks 151st 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 | 167th | 221 |
| Growth 2020-2025 (PEP) | 42nd | 187 |
| Residents per square mile | 224th | 241 |
| Median household income | 151st | 235 |
| Per capita income | 183rd | 240 |
| Median home value | 206th | 239 |
| Bachelor's degree or higher | 177th | 239 |
| Median age | 58th | 239 |
| Owner-occupied share | 4th | 241 |
| Work from home | 212th | 214 |
| Travel time to work | 11th | 241 |
Lempster's figures with every place in New Hampshire (CSV)
Every place in New Hampshire, sortable · Compare Lempster 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 Lempster?
21 of the 56 figures for Lempster 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 Lempster 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.