Census tract · Middlesex County
Census Tract 3331, Middlesex County, Massachusetts
Census Tract 3331, GEOID 25017333100, in Middlesex County, Massachusetts, entirely within Woburn. 7,458 residents in the ACS 2020-2024 5-year estimates (±709); the 2020 Census counted 7,687.
Residents, 2020-2024
7,458
±709 (90% margin)
2020 Census count: 7,687
Median household income
$122,917
±$15,194 (90% margin)
Middlesex County: $130,847
Median home value
$710,100
±$51,676 (90% margin)
Middlesex County: $727,800
Median gross rent
$2,109
±$162 (90% margin)
Middlesex County: $2,201
Where is Census Tract 3331?
Census Tract 3331 is one of 357 census tracts in Middlesex County, Massachusetts. It covers 2.74 square miles of land, 2,803 residents per square mile in 2020. Its GEOID, 25017333100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Woburn | 100% |
6 census tracts border Census Tract 3331: Tract 3322.01 ($103,440), Tract 3324.02 ($155,417), Tract 3332 ($94,673), Tract 3383 ($205,040), Tract 3384 ($250,000 or more) and Tract 3585 ($250,000 or more). 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 3331?
The 2020-2024 American Community Survey puts Census Tract 3331's population at 7,458 (±709) in 3,030 households; the 2020 Census counted 7,687 residents and 3,230 housing units.
| Measure | Tract 3331 | Woburn |
|---|---|---|
| Total population | 7,458 ±709 | 41,939 |
| Households | 3,030 ±306 | 16,432 |
| Average household size | 2.44 ±0.15 | 2.54 |
| Housing units | 3,126 ±313 | 17,045 |
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 3331?
The median resident of Census Tract 3331 is 46.1 years old; 15.6% are under 18 and 23.7% are 65 or older. The largest group is non-Hispanic white residents at 74.3%, then non-Hispanic Asian residents at 8.3%. 21.3% of residents were born outside the United States.
| Measure | Tract 3331 | Woburn |
|---|---|---|
| Median age | 46.1 ±4.0 | 39.3 |
| Under 18 years | 15.6% ±2.4 pts | 17.9% |
| 65 years and over | 23.7% ±3.6 pts | 15.7% |
| Hispanic or Latino (any race) | 4.2% ±2.6 pts | 8.1% |
| White alone, not Hispanic | 74.3% ±5.3 pts | 71.7% |
| Black or African American alone, not Hispanic | 8.2% ±4.8 pts | 4.4% |
| Asian alone, not Hispanic | 8.3% ±2.6 pts | 8.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.6 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.1% |
| Two or more races, not Hispanic | 3.9% ±2.0 pts | 6.2% |
| Some other race alone, not Hispanic | 1.1% ±1.2 pts | 1.3% |
| Born outside the United States | 21.3% ±4.6 pts | 20.4% |
| Speak a language other than English at home (age 5+) | 23.5% ±4.8 pts | 25.8% |
| Civilian veterans (age 18+) | 4.8% ±2.0 pts | 3.8% |
| With a disability | 10.8% ±3.0 pts | 12.3% |
| No health insurance coverage | 2.3% ±1.4 pts | 1.6% |
| High school graduate or higher (age 25+) | 97.3% ±2.0 pts | 94.9% |
| Bachelor's degree or higher (age 25+) | 55.2% ±6.9 pts | 46.5% |
| Graduate or professional degree (age 25+) | 22.7% ±5.4 pts | 19.1% |
| Lived in the same house a year earlier | 87.4% ±3.9 pts | 87.1% |
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 3331 earn?
Half of the 3,030 households in Census Tract 3331 earn less than $122,917 a year (±$15,194), against $130,847 across Middlesex County: 210th highest of the county's 350 tracts with a reliable estimate. 5.1% of residents live below the poverty line.
| Measure | Tract 3331 | Woburn |
|---|---|---|
| Median household income | $122,917 ±$15,194 | $111,185 |
| Mean household income | $155,745 ±$16,673 | $147,507 |
| Per capita income | $64,097 ±$7,026 | $58,435 |
| People below the poverty line | 5.1% ±2.7 pts | 7.9% |
| Children under 18 below the poverty line | 7.7% ±11.3 pts | 11.1% |
| Households receiving SNAP | 3.8% ±3.0 pts | 10.4% |
| Households with a computer | 96.1% ±2.7 pts | 97.5% |
| Households with a broadband subscription | 95.1% ±3.4 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 3331?
Owners occupy 72.7% of Census Tract 3331's occupied homes and renters 27.3%. The median owner-occupied home is valued at $710,100 by its owner (±$51,676). The median renter pays $2,109 a month including utilities, and 41.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 3331 | Woburn |
|---|---|---|
| Median home value (owner-occupied) | $710,100 ±$51,676 | $673,500 |
| Median gross rent | $2,109 ±$162 | $2,221 |
| Renters paying 35% or more of income on rent | 41.8% ±19.2 pts | 41.5% |
| Median monthly owner costs, with a mortgage | $2,809 ±$234 | $2,791 |
| Owner-occupied homes | 72.7% ±5.1 pts | 55.7% |
| Renter-occupied homes | 27.3% ±5.1 pts | 44.3% |
| Housing units | 3,126 ±313 | 17,045 |
| Single-family detached homes | 55.8% ±5.5 pts | 46.5% |
| Mobile homes | 0.6% ±0.9 pts | 0.1% |
| Built 2020 or later | 2.5% ±2.1 pts | 2.6% |
| Built 2010 to 2019 | 1.4% ±1.7 pts | 5.8% |
| Built 1939 or earlier | 5.4% ±3.6 pts | 18.7% |
| Households with no vehicle | 8.0% ±4.1 pts | 5.5% |
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 3331 get to work?
66.9% of Census Tract 3331's workers drive alone and 19.9% work from home. The average trip to work takes 28.7 minutes. The unemployment rate in 2020-2024 averaged 7.5%.
| Measure | Tract 3331 | Woburn |
|---|---|---|
| In the labor force (age 16+) | 66.4% ±5.1 pts | 73.7% |
| Unemployment rate | 7.5% ±3.8 pts | 7.9% |
| Drove alone to work | 66.9% ±6.7 pts | 69.1% |
| Carpooled | 3.5% ±2.2 pts | 8.9% |
| Public transportation | 5.4% ±2.8 pts | 2.7% |
| Walked | 0.9% ±1.4 pts | 1.3% |
| Worked from home | 19.9% ±6.3 pts | 16.0% |
| Mean travel time to work | 28.7 min ±3.1 | 25.3 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 3331 compare with the other tracts in Middlesex County?
Among Middlesex County's tracts with a reliable estimate, Census Tract 3331 ranks as shown below (1 = highest).
| Measure | In Middlesex County | In Woburn |
|---|---|---|
| Population | 14th of 354 | 1st of 8 |
| Residents per square mile | 228th of 357 | 7th of 8 |
| Median household income | 210th of 350 | 2nd of 8 |
| Per capita income | 203rd of 354 | 2nd of 8 |
| Median home value | 191st of 350 | 3rd of 8 |
| Median gross rent | 189th of 327 | 6th of 8 |
| Poverty rate | 165th of 223 | 6th of 8 |
| Bachelor's degree or higher | 220th of 354 | 2nd of 8 |
| Median age | 49th of 354 | 1st of 8 |
| Owner-occupied share | 132nd of 351 | 1st of 8 |
The tracts next to it on Middlesex County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 3521.01 | 207th | $123,077±$40,823 · within the margin of this tract |
| Tract 3526 | 208th | $123,050±$41,581 · within the margin of this tract |
| Tract 3641.02 | 209th | $122,966±$24,150 · within the margin of this tract |
| Tract 3331 | 210th | $122,917±$15,194 |
| Tract 3224 | 211th | $122,839±$34,843 · within the margin of this tract |
| Tract 3143.01 | 212th | $122,563±$12,487 · within the margin of this tract |
| Tract 3882 | 213th | $122,365±$16,320 · 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 3331?
Every figure for Census Tract 3331 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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