Census tract · Middlesex County
Census Tract 3524, Middlesex County, Massachusetts
Census Tract 3524, GEOID 25017352400, in Middlesex County, Massachusetts, entirely within Cambridge. 1,655 residents in the ACS 2020-2024 5-year estimates (±265); the 2020 Census counted 1,879.
Residents, 2020-2024
1,655
±265 (90% margin)
2020 Census count: 1,879
Median household income
$74,432
±$16,352 (90% margin)
Middlesex County: $130,847
Median home value
$818,800
±$423,265 (90% margin)
Middlesex County: $727,800
Median gross rent
$1,381
±$640 (90% margin)
Middlesex County: $2,201
Where is Census Tract 3524?
Census Tract 3524 is one of 357 census tracts in Middlesex County, Massachusetts. It covers 0.09 square miles of land, 21,598 residents per square mile in 2020. Its GEOID, 25017352400, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Cambridge | 100% |
5 census tracts border Census Tract 3524: Tract 3523 ($171,633), Tract 3525 ($132,500), Tract 3526 ($123,050), Tract 3531.01 and Tract 3531.02 ($71,302). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 3524?
The 2020-2024 American Community Survey puts Census Tract 3524's population at 1,655 (±265) in 689 households; the 2020 Census counted 1,879 residents and 716 housing units.
| Measure | Tract 3524 | Cambridge |
|---|---|---|
| Total population | 1,655±265 | 118,796 |
| Households | 689±100 | 49,444 |
| Average household size | 2.40±0.34 | 2.05 |
| Housing units | 732±101 | 54,840 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 3524?
The median resident of Census Tract 3524 is 31.5 years old; 20.8% are under 18 and 10.5% are 65 or older. The largest group is non-Hispanic Black residents at 46.8%, then non-Hispanic white residents at 22.7%. 32.6% of residents were born outside the United States.
| Measure | Tract 3524 | Cambridge |
|---|---|---|
| Median age | 31.5±2.5 | 30.4 |
| Under 18 years | 20.8%±6.4 pts | 12.4% |
| 65 years and over | 10.5%±2.4 pts | 12.2% |
| Hispanic or Latino (any race) | 14.9%±8.0 pts | 8.8% |
| White alone, not Hispanic | 22.7%±7.4 pts | 53.8% |
| Black or African American alone, not Hispanic | 46.8%±10.7 pts | 10.3% |
| Asian alone, not Hispanic | 8.6%±5.7 pts | 20.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±2.5 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±2.5 pts | 0.1% |
| Two or more races, not Hispanic | 5.6%±4.0 pts | 5.8% |
| Some other race alone, not Hispanic | 1.4%±1.9 pts | 0.9% |
| Born outside the United States | 32.6%±6.8 pts | 29.7% |
| Speak a language other than English at home (age 5+) | 45.6%±9.2 pts | 35.2% |
| Civilian veterans (age 18+) | 0.0%±3.2 pts | 1.6% |
| With a disability | 15.0%±5.5 pts | 7.5% |
| No health insurance coverage | 2.1%±1.9 pts | 1.7% |
| High school graduate or higher (age 25+) | 83.8%±5.4 pts | 96.0% |
| Bachelor's degree or higher (age 25+) | 45.1%±8.9 pts | 80.8% |
| Graduate or professional degree (age 25+) | 19.6%±6.4 pts | 51.2% |
| Lived in the same house a year earlier | 87.1%±5.4 pts | 74.5% |
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 Census Tract 3524 earn?
Half of the 689 households in Census Tract 3524 earn less than $74,432 a year (±$16,352), against $130,847 across Middlesex County: 324th highest of the county's 350 tracts with a reliable estimate. 18.7% of residents live below the poverty line.
| Measure | Tract 3524 | Cambridge |
|---|---|---|
| Median household income | $74,432±$16,352 | $130,748 |
| Mean household income | $101,691±$18,643 | $183,408 |
| Per capita income | $42,323±$9,375 | $78,723 |
| People below the poverty line | 18.7%±9.7 pts | 12.8% |
| Children under 18 below the poverty line | 26.7%±19.0 pts | 15.2% |
| Households receiving SNAP | 28.6%±9.3 pts | 8.4% |
| Households with a computer | 96.7%±3.6 pts | 98.5% |
| Households with a broadband subscription | 86.5%±7.8 pts | 94.8% |
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 Census Tract 3524?
Owners occupy 13.8% of Census Tract 3524's occupied homes and renters 86.2%. The median owner-occupied home is valued at $818,800 by its owner (±$423,265). The median renter pays $1,381 a month including utilities, and 26.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 3524 | Cambridge |
|---|---|---|
| Median home value (owner-occupied) | $818,800±$423,265 | $1,092,100 |
| Median gross rent | $1,381±$640 | $2,787 |
| Renters paying 35% or more of income on rent | 26.8%±10.4 pts | 35.4% |
| Median monthly owner costs, with a mortgage | $1,938±$1,139 | $3,505 |
| Owner-occupied homes | 13.8%±5.4 pts | 33.5% |
| Renter-occupied homes | 86.2%±5.4 pts | 66.5% |
| Housing units | 732±101 | 54,840 |
| Single-family detached homes | 3.6%±3.8 pts | 9.9% |
| Mobile homes | 0.0%±5.6 pts | 0.1% |
| Built 2020 or later | 0.0%±5.6 pts | 2.2% |
| Built 2010 to 2019 | 5.7%±3.7 pts | 10.1% |
| Built 1939 or earlier | 43.3%±9.5 pts | 47.0% |
| Households with no vehicle | 41.4%±12.6 pts | 33.2% |
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 do people in Census Tract 3524 get to work?
26.7% of Census Tract 3524's workers drive alone and 18.1% work from home. The average trip to work takes 26.3 minutes.
| Measure | Tract 3524 | Cambridge |
|---|---|---|
| In the labor force (age 16+) | 72.1%±7.0 pts | 69.6% |
| Unemployment rate | 8.6%±7.4 pts | 3.4% |
| Drove alone to work | 26.7%±6.9 pts | 19.7% |
| Carpooled | 6.3%±5.0 pts | 2.5% |
| Public transportation | 23.0%±8.0 pts | 18.0% |
| Walked | 17.2%±5.2 pts | 19.2% |
| Worked from home | 18.1%±8.9 pts | 30.8% |
| Mean travel time to work | 26.3 min±3.7 | 25.8 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
How does Census Tract 3524 compare with the other tracts in Middlesex County?
Among Middlesex County's tracts with a reliable estimate, Census Tract 3524 ranks as shown below (1 = highest).
| Measure | In Middlesex County | In Cambridge |
|---|---|---|
| Population | 347th of 354 | 33rd of 33 |
| Residents per square mile | 42nd of 357 | 16th of 33 |
| Median household income | 324th of 350 | 30th of 32 |
| Per capita income | 306th of 354 | 31st of 33 |
| Median home value | 131st of 350 | 26th of 29 |
| Median gross rent | 303rd of 327 | 33rd of 33 |
| Poverty rate | 31st of 223 | 9th of 30 |
| Bachelor's degree or higher | 262nd of 354 | 33rd of 33 |
| Median age | 318th of 354 | 18th of 33 |
| Owner-occupied share | 343rd of 351 | 28th of 30 |
The tracts next to it on Middlesex County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 3111 | 321st | $77,768±$20,924 · within the margin of this tract |
| Tract 3391.01 | 322nd | $77,386±$30,331 · within the margin of this tract |
| Tract 3251.02 | 323rd | $74,973±$16,657 · within the margin of this tract |
| Tract 3524 | 324th | $74,432±$16,352 |
| Tract 3539 | 325th | $74,076±$15,825 · within the margin of this tract |
| Tract 3105 | 326th | $73,628±$13,252 · within the margin of this tract |
| Tract 3213.01 | 327th | $72,143±$13,279 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 3524?
1 of the 18 figures for Census Tract 3524 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections