Census-designated place · Massachusetts
Lexington, Massachusetts
Lexington, census-designated place, in Middlesex County, Massachusetts. Lexington had 34,295 people in the ACS 2020-2024 5-year estimates (±75). GEOID 2535250.
Residents, 2020-2024
34,295
±75 (90% margin)
2020 Census count: 34,454
Median household income
$238,444
±$17,708 (90% margin)
Massachusetts: $103,960
Median home value
$1,203,100
±$35,366 (90% margin)
Massachusetts: $562,100
Median gross rent
$2,891
±$233 (90% margin)
Massachusetts: $1,762
Where is Lexington and what county is it in?
Lexington is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Middlesex County, Massachusetts. It covers 16.4 square miles of land, 2,097 residents per square mile in 2020.
Lexington 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 Lexington, and is it growing?
The 2020-2024 American Community Survey puts Lexington's population at 34,295 (±75). The 2020 Census counted 34,454 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; Lexington is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Lexington | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 34,295 ±75 | 1,638,365 | +955 |
| Households | 12,477 ±331 | 634,215 | +666 |
| Average household size | 2.72 ±0.07 | 2.49 | no clear change |
| Housing units | 12,754 ±369 | 664,267 | +600 |
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 Lexington?
The median resident of Lexington is 47.3 years old; 25.5% are under 18 and 21.7% are 65 or older. The largest group is non-Hispanic white residents at 55.2%, then non-Hispanic Asian residents at 33.8%. 34.4% of residents were born outside the United States.
| Measure | Lexington | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 47.3 ±0.8 | 38.9 | +1.6 |
| Under 18 years | 25.5% ±1.1 pts | 19.5% | – |
| 65 years and over | 21.7% ±1.7 pts | 16.3% | – |
| Male | 47.9% ±1.2 pts | 49.4% | – |
| Hispanic or Latino (any race) | 3.5% ±1.1 pts | 9.3% | +1.4 pts |
| White alone, not Hispanic | 55.2% ±3.0 pts | 65.1% | −7.5 pts |
| Black or African American alone, not Hispanic | 1.7% ±0.8 pts | 4.7% | no clear change |
| Asian alone, not Hispanic | 33.8% ±2.9 pts | 13.6% | +3.7 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.9% ±1.0 pts | 5.8% | – |
| Some other race alone, not Hispanic | 0.9% ±0.5 pts | 1.4% | – |
| Born outside the United States | 34.4% ±2.3 pts | 23.1% | +5.6 pts |
| Speak a language other than English at home (age 5+) | 40.3% ±3.3 pts | 29.1% | – |
| Civilian veterans (age 18+) | 3.7% ±1.1 pts | 3.3% | – |
| With a disability | 6.8% ±1.0 pts | 9.9% | – |
| No health insurance coverage | 1.0% ±0.4 pts | 2.4% | no clear change |
| High school graduate or higher (age 25+) | 96.9% ±1.2 pts | 93.2% | – |
| Bachelor's degree or higher (age 25+) | 84.3% ±2.3 pts | 59.5% | no clear change |
| Graduate or professional degree (age 25+) | 58.6% ±2.4 pts | 30.5% | – |
| Lived in the same house a year earlier | 88.9% ±2.1 pts | 87.2% | – |
| Moved from another state in the past year | 3.0% ±1.2 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 Lexington earn?
Half of Lexington's 12,477 households earn less than $238,444 a year (±$17,708), against $130,847 in Middlesex County and $103,960 in Massachusetts. In 2015-2019 it was $229,156 in 2024 dollars; the margins of error cannot tell the two periods apart. 4.7% of residents live below the poverty line.
| Measure | Lexington | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $238,444 ±$17,708 | $130,847 | no clear change |
| Mean household income | $311,976 ±$16,682 | $178,070 | – |
| Per capita income | $114,758 ±$6,064 | $69,556 | +$13,156 |
| People below the poverty line | 4.7% ±1.0 pts | 7.7% | +1.5 pts |
| Children under 18 below the poverty line | 4.3% ±2.1 pts | 7.9% | no clear change |
| Households receiving SNAP | 4.2% ±1.3 pts | 9.3% | – |
| Households with a computer | 98.6% ±0.6 pts | 97.0% | – |
| Households with a broadband subscription | 98.2% ±0.7 pts | 94.7% | – |
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 Lexington?
Owners occupy 80.5% of Lexington's occupied homes and renters 19.5%. The median owner-occupied home is valued at $1,203,100 by its owner (±$35,366). The median renter pays $2,891 a month including utilities, and 44.5% of renters pay 35% or more of their income on rent.
| Measure | Lexington | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $1,203,100 ±$35,366 | $727,800 | +$108,152 |
| Median gross rent | $2,891 ±$233 | $2,201 | no clear change |
| Renters paying 35% or more of income on rent | 44.5% ±7.1 pts | 37.6% | +10.2 pts |
| Median monthly owner costs, with a mortgage | $4,000 or more | $3,224 | – |
| Owner-occupied homes | 80.5% ±2.3 pts | 61.3% | no clear change |
| Renter-occupied homes | 19.5% ±2.3 pts | 38.7% | – |
| Housing units | 12,754 ±369 | 664,267 | +600 |
| Homeowner vacancy rate | 1.7% ±1.3 pts | 0.6% | – |
| Rental vacancy rate | 2.8% ±3.1 pts | 3.4% | – |
| Single-family detached homes | 73.7% ±2.5 pts | 46.5% | – |
| Mobile homes | 0.0% ±0.3 pts | 0.4% | – |
| Built 2020 or later | 2.7% ±1.3 pts | 1.2% | – |
| Built 2010 to 2019 | 9.9% ±1.8 pts | 7.3% | – |
| Built 1939 or earlier | 21.2% ±2.5 pts | 32.3% | – |
| Households with no vehicle | 4.4% ±1.2 pts | 10.3% | – |
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 do people in Lexington work and get to work?
50.9% of Lexington's workers drive alone and 36.7% work from home. The average trip to work takes 30.7 minutes. The unemployment rate in 2020-2024 averaged 2.9%.
| Measure | Lexington | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 63.9% ±2.3 pts | 69.9% | – |
| Unemployment rate | 2.9% ±0.8 pts | 4.4% | no clear change |
| Drove alone to work | 50.9% ±3.3 pts | 54.2% | – |
| Carpooled | 4.3% ±1.3 pts | 6.3% | – |
| Public transportation | 4.7% ±1.2 pts | 7.2% | – |
| Walked | 1.8% ±1.0 pts | 4.2% | – |
| Worked from home | 36.7% ±3.3 pts | 24.7% | +28.0 pts |
| Mean travel time to work | 30.7 min ±1.4 | 29.9 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 Lexington?
6 census tracts lie mostly in Lexington (2020 census blocks). Their median household incomes run from $184,299 (Tract 3584) to $250,000 or more (Tract 3587).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 3586Middlesex County | 6,459 | $238,636 |
| Tract 3583Middlesex County | 6,131 | $250,000 or more |
| Tract 3585Middlesex County | 5,753 | $250,000 or more |
| Tract 3587Middlesex County | 5,752 | $250,000 or more |
| Tract 3581Middlesex County | 5,281 | $233,056 |
| Tract 3584Middlesex County | 4,919 | $184,299 |
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 Lexington) · Census block assignment files
How does Lexington compare with other places in Massachusetts?
Lexington ranks 8th of 453 places in Massachusetts with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 48th | 460 |
| Residents per square mile | 78th | 461 |
| Median household income | 8th | 453 |
| Per capita income | 6th | 460 |
| Median home value | 19th | 459 |
| Median gross rent | 5th | 410 |
| Poverty rate | 240th | 338 |
| Bachelor's degree or higher | 5th | 459 |
| Median age | 165th | 461 |
| Owner-occupied share | 226th | 460 |
| Work from home | 11th | 429 |
| Travel time to work | 206th | 459 |
Lexington's figures with every place in Massachusetts (CSV)
Every place in Massachusetts, sortable · Compare Lexington 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 Lexington?
5 of the 57 figures for Lexington 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 Lexington 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.