Census tract · Middlesex County
Census Tract 3573, Middlesex County, Massachusetts
Census Tract 3573, GEOID 25017357300, in Middlesex County, Massachusetts, entirely within Belmont. 3,278 residents in the ACS 2020-2024 5-year estimates (±367); the 2020 Census counted 3,117.
Residents, 2020-2024
3,278
±367 (90% margin)
2020 Census count: 3,117
Median household income
$167,738
±$17,590 (90% margin)
Middlesex County: $130,847
Median home value
$920,500
±$130,790 (90% margin)
Middlesex County: $727,800
Median gross rent
$2,778
±$168 (90% margin)
Middlesex County: $2,201
Where is Census Tract 3573?
Census Tract 3573 is one of 357 census tracts in Middlesex County, Massachusetts. It covers 0.25 square miles of land, 12,468 residents per square mile in 2020. Its GEOID, 25017357300, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Belmont | 100% |
5 census tracts border Census Tract 3573: Tract 3543 ($124,625), Tract 3572 ($250,000 or more), Tract 3574 ($220,357), Tract 3702.01 ($144,375) and Tract 3703.01 ($128,976). 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 3573?
The 2020-2024 American Community Survey puts Census Tract 3573's population at 3,278 (±367) in 1,330 households; the 2020 Census counted 3,117 residents and 1,323 housing units.
| Measure | Tract 3573 | Belmont |
|---|---|---|
| Total population | 3,278±367 | 27,175 |
| Households | 1,330±114 | 10,412 |
| Average household size | 2.46±0.19 | 2.59 |
| Housing units | 1,376±145 | 10,881 |
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 3573?
The median resident of Census Tract 3573 is 37.8 years old; 23.2% are under 18 and 16.4% are 65 or older. The largest group is non-Hispanic white residents at 69.3%, then non-Hispanic Asian residents at 17.0%. 19.7% of residents were born outside the United States.
| Measure | Tract 3573 | Belmont |
|---|---|---|
| Median age | 37.8±2.3 | 42.9 |
| Under 18 years | 23.2%±3.4 pts | 24.2% |
| 65 years and over | 16.4%±4.6 pts | 19.3% |
| Hispanic or Latino (any race) | 8.6%±4.9 pts | 4.9% |
| White alone, not Hispanic | 69.3%±7.7 pts | 68.8% |
| Black or African American alone, not Hispanic | 0.0%±1.3 pts | 1.6% |
| Asian alone, not Hispanic | 17.0%±5.7 pts | 19.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.3 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.3 pts | 0.0% |
| Two or more races, not Hispanic | 4.7%±2.9 pts | 4.5% |
| Some other race alone, not Hispanic | 0.3%±0.5 pts | 0.6% |
| Born outside the United States | 19.7%±6.3 pts | 26.2% |
| Speak a language other than English at home (age 5+) | 28.8%±7.5 pts | 32.3% |
| Civilian veterans (age 18+) | 0.6%±0.7 pts | 2.2% |
| With a disability | 6.1%±2.6 pts | 8.3% |
| No health insurance coverage | 1.0%±1.0 pts | 1.8% |
| High school graduate or higher (age 25+) | 98.5%±2.3 pts | 97.7% |
| Bachelor's degree or higher (age 25+) | 84.0%±4.7 pts | 80.9% |
| Graduate or professional degree (age 25+) | 52.6%±6.0 pts | 51.6% |
| Lived in the same house a year earlier | 85.7%±5.5 pts | 87.4% |
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 Census Tract 3573 earn?
Half of the 1,330 households in Census Tract 3573 earn less than $167,738 a year (±$17,590), against $130,847 across Middlesex County: 84th highest of the county's 350 tracts with a reliable estimate.
| Measure | Tract 3573 | Belmont |
|---|---|---|
| Median household income | $167,738±$17,590 | $183,137 |
| Mean household income | $208,284±$28,627 | $246,939 |
| Per capita income | $84,599±$10,824 | $95,484 |
| People below the poverty line | 3.2%±2.5 pts | 3.6% |
| Children under 18 below the poverty line | 0.7%±1.2 pts | 2.7% |
| Households receiving SNAP | 1.1%±1.8 pts | 5.8% |
| Households with a computer | 99.2%±1.3 pts | 97.2% |
| Households with a broadband subscription | 98.6%±1.7 pts | 96.4% |
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 3573?
Owners occupy 51.4% of Census Tract 3573's occupied homes and renters 48.6%. The median owner-occupied home is valued at $920,500 by its owner (±$130,790). The median renter pays $2,778 a month including utilities, and 35.5% of renters pay 35% or more of their income on rent.
| Measure | Tract 3573 | Belmont |
|---|---|---|
| Median home value (owner-occupied) | $920,500±$130,790 | $1,159,000 |
| Median gross rent | $2,778±$168 | $2,527 |
| Renters paying 35% or more of income on rent | 35.5%±14.5 pts | 36.7% |
| Median monthly owner costs, with a mortgage | $3,707±$382 | $4,000 or more |
| Owner-occupied homes | 51.4%±7.6 pts | 64.7% |
| Renter-occupied homes | 48.6%±7.6 pts | 35.3% |
| Housing units | 1,376±145 | 10,881 |
| Single-family detached homes | 27.6%±7.8 pts | 45.4% |
| Mobile homes | 0.0%±3.0 pts | 0.0% |
| Built 2020 or later | 0.0%±3.0 pts | 1.2% |
| Built 2010 to 2019 | 3.1%±2.5 pts | 5.7% |
| Built 1939 or earlier | 55.0%±7.9 pts | 57.1% |
| Households with no vehicle | 5.6%±4.9 pts | 7.1% |
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 3573 get to work?
42.2% of Census Tract 3573's workers drive alone and 33.8% work from home. The average trip to work takes 32.3 minutes.
| Measure | Tract 3573 | Belmont |
|---|---|---|
| In the labor force (age 16+) | 73.4%±5.5 pts | 68.3% |
| Unemployment rate | 0.6%±0.9 pts | 4.3% |
| Drove alone to work | 42.2%±7.8 pts | 48.2% |
| Carpooled | 7.9%±4.9 pts | 4.3% |
| Public transportation | 12.2%±5.0 pts | 9.3% |
| Walked | 0.5%±0.8 pts | 2.2% |
| Worked from home | 33.8%±8.6 pts | 31.5% |
| Mean travel time to work | 32.3 min±2.8 | 29.3 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 3573 compare with the other tracts in Middlesex County?
Among Middlesex County's tracts with a reliable estimate, Census Tract 3573 ranks as shown below (1 = highest).
| Measure | In Middlesex County | In Belmont |
|---|---|---|
| Population | 277th of 354 | 4th of 8 |
| Residents per square mile | 97th of 357 | 2nd of 8 |
| Median household income | 84th of 350 | 6th of 8 |
| Per capita income | 83rd of 354 | 5th of 8 |
| Median home value | 93rd of 350 | 6th of 8 |
| Median gross rent | 65th of 327 | 3rd of 8 |
| Bachelor's degree or higher | 41st of 354 | 3rd of 8 |
| Median age | 223rd of 354 | 8th of 8 |
| Owner-occupied share | 225th of 351 | 8th of 8 |
The tracts next to it on Middlesex County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 3161.02 | 81st | $169,095±$4,377 · within the margin of this tract |
| Tract 3164 | 82nd | $168,088±$28,910 · within the margin of this tract |
| Tract 3852.04 | 83rd | $167,895±$62,898 · within the margin of this tract |
| Tract 3573 | 84th | $167,738±$17,590 |
| Tract 3171.03 | 85th | $167,614±$17,528 · within the margin of this tract |
| Tract 3575 | 86th | $167,563±$26,540 · within the margin of this tract |
| Tract 3241.02 | 87th | $167,422±$20,904 · 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 3573?
2 of the 18 figures for Census Tract 3573 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.
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