Town · Connecticut
Lyme, Connecticut
Lyme, town, in Lower Connecticut River Valley Planning Region, Connecticut. Lyme had 2,424 residents on July 1, 2025 by the Census Bureau's estimate, up 2.5% since 2020; the 2020 Census counted 2,352 and the ACS 2020-2024 5-year estimates put it at 2,303 (±332). GEOID 0913044210.
Residents, July 2025 estimate
2,424
Census Bureau estimate (no margin published)
2020 Census count: 2,352 · ACS 2020-2024: 2,303 ±332
Median household income
$135,000
±$21,753 (90% margin)
Connecticut: $95,781
Median home value
$629,900
±$104,959 (90% margin)
Connecticut: $366,900
Median gross rent
$1,719
±$1,083 (90% margin)
Connecticut: $1,488
Where is Lyme and what county is it in?
Lyme is a town in Lower Connecticut River Valley Planning Region, Connecticut. It covers 31.8 square miles of land, 74 residents per square mile in 2020.
Lyme is in the Hartford-West Hartford-East Hartford, CT metropolitan statistical area, which takes in 2 counties (Census Bureau delineation, July 2023).
Lyme is the same area as Census Tract 6501 of Lower Connecticut River Valley Planning Region: the tract's figures are Lyme's own.
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 2,424 people lived in Lyme on July 1, 2025, up 2.5% since 2020, in line with Connecticut (+2.2%). The 2020 Census counted 2,352 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,303 (±332).
| Measure | Lyme | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,303±332 | 175,822 | – |
| Households | 998±128 | 74,068 | – |
| Average household size | 2.30±0.17 | 2.28 | – |
| Housing units | 1,197±128 | 82,963 | – |
Lyme's population since 2000
From 2,016 in 2000 to 2,424 in 2025: up 20.2%. 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 55.6 years old; 13.1% are under 18 and 30.7% are 65 or older. The largest group is non-Hispanic white residents at 90.9%, then non-Hispanic residents of two or more races at 5.0%. 4.0% of residents were born outside the United States.
| Measure | Lyme | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 55.6±3.3 | 45.9 | – |
| Under 18 years | 13.1%±3.3 pts | 16.7% | – |
| 65 years and over | 30.7%±3.8 pts | 22.2% | – |
| Male | 51.3%±2.7 pts | 49.3% | – |
| Hispanic or Latino (any race) | 1.2%±0.9 pts | 7.8% | – |
| White alone, not Hispanic | 90.9%±3.8 pts | 79.2% | – |
| Black or African American alone, not Hispanic | 0.0%±1.8 pts | 4.4% | – |
| Asian alone, not Hispanic | 1.6%±1.5 pts | 3.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.8 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.8 pts | 0.2% | – |
| Two or more races, not Hispanic | 5.0%±3.7 pts | 4.6% | – |
| Some other race alone, not Hispanic | 1.3%±1.4 pts | 0.3% | – |
| Born outside the United States | 4.0%±2.0 pts | 8.2% | – |
| Speak a language other than English at home (age 5+) | 3.1%±2.0 pts | 10.7% | – |
| Civilian veterans (age 18+) | 4.1%±1.7 pts | 5.8% | – |
| With a disability | 11.9%±3.1 pts | 11.7% | – |
| No health insurance coverage | 3.6%±4.6 pts | 3.3% | – |
| High school graduate or higher (age 25+) | 98.8%±0.8 pts | 95.5% | – |
| Bachelor's degree or higher (age 25+) | 63.5%±10.3 pts | 46.0% | – |
| Graduate or professional degree (age 25+) | 31.2%±6.1 pts | 20.7% | – |
| Lived in the same house a year earlier | 97.8%±1.5 pts | 90.5% | – |
| Moved from another state in the past year | 0.4%±0.6 pts | 2.4% | – |
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 998 households earn less than $135,000 a year (±$21,753), against $104,428 in Lower Connecticut River Valley Planning Region and $95,781 in Connecticut.
| Measure | Lyme | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $135,000±$21,753 | $104,428 | – |
| Mean household income | $227,835±$37,967 | $138,522 | – |
| Per capita income | $96,157±$17,677 | $59,075 | – |
| People below the poverty line | 2.9%±2.3 pts | 6.8% | – |
| Children under 18 below the poverty line | 6.6%±8.0 pts | 6.6% | – |
| Households receiving SNAP | 1.3%±1.3 pts | 6.8% | – |
| Households with a computer | 99.2%±0.9 pts | 95.4% | – |
| Households with a broadband subscription | 98.9%±1.1 pts | 92.5% | – |
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 90.8% of Lyme's occupied homes and renters 9.2%. The median owner-occupied home is valued at $629,900 by its owner (±$104,959). The median renter pays $1,719 a month including utilities.
| Measure | Lyme | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $629,900±$104,959 | $379,700 | – |
| Median gross rent | $1,719±$1,083 | $1,454 | – |
| Renters paying 35% or more of income on rent | 6.8%±11.7 pts | 40.7% | – |
| Median monthly owner costs, with a mortgage | $3,062±$326 | $2,411 | – |
| Owner-occupied homes | 90.8%±4.7 pts | 75.8% | – |
| Renter-occupied homes | 9.2%±4.7 pts | 24.2% | – |
| Housing units | 1,197±128 | 82,963 | – |
| Homeowner vacancy rate | 0.0%±4.2 pts | 0.7% | – |
| Rental vacancy rate | 0.0%±35.0 pts | 3.6% | – |
| Single-family detached homes | 98.6%±1.8 pts | 72.4% | – |
| Mobile homes | 1.0%±1.6 pts | 1.0% | – |
| Built 2020 or later | 0.9%±1.0 pts | 0.4% | – |
| Built 2010 to 2019 | 0.7%±0.8 pts | 4.1% | – |
| Built 1939 or earlier | 31.2%±8.3 pts | 19.2% | – |
| Households with no vehicle | 0.5%±0.8 pts | 5.4% | – |
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 2 new housing units in Lyme in 2025 (2 in single-family houses), 0.8 per 1,000 residents against 2.0 across Connecticut.
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?
63.0% of Lyme's workers drive alone and 27.6% work from home. The average trip to work takes 30.9 minutes. The unemployment rate in 2020-2024 averaged 2.9%.
| Measure | Lyme | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.6%±5.3 pts | 65.0% | – |
| Unemployment rate | 2.9%±1.8 pts | 3.8% | – |
| Drove alone to work | 63.0%±10.7 pts | 71.6% | – |
| Carpooled | 1.3%±1.5 pts | 6.5% | – |
| Public transportation | 3.0%±2.6 pts | 1.1% | – |
| Walked | 4.7%±3.9 pts | 2.3% | – |
| Worked from home | 27.6%±9.9 pts | 16.8% | – |
| Mean travel time to work | 30.9 min±4.4 | 26.0 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 Lyme?
1 census tract lies mostly in Lyme (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 6501Lower Connecticut River Valley Planning Region | 2,303 | $135,000 |
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 Connecticut?
By the Census Bureau's July 2025 estimates, Lyme is the 4,195th-most populous of the 16,079 U.S. towns and townships that have one and the 126th-most populous of 142 in Connecticut.
Lyme ranks 77th of 294 places in Connecticut with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 126th | 142 |
| Growth 2020-2025 (PEP) | 72nd | 167 |
| Residents per square mile | 290th | 303 |
| Median household income | 77th | 294 |
| Per capita income | 35th | 303 |
| Median home value | 47th | 300 |
| Median gross rent | 83rd | 266 |
| Bachelor's degree or higher | 60th | 297 |
| Median age | 19th | 301 |
| Owner-occupied share | 47th | 300 |
| Work from home | 50th | 279 |
| Travel time to work | 78th | 302 |
Lyme's figures with every place in Connecticut (CSV)
Every place in Connecticut, 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?
22 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.