Census tract · Norfolk County
Census Tract 4004.02, Norfolk County, Massachusetts
Census Tract 4004.02, GEOID 25021400402, in Norfolk County, Massachusetts, entirely within Brookline. 1,982 residents in the ACS 2020-2024 5-year estimates (±392); the 2020 Census counted 2,045.
Residents, 2020-2024
1,982
±392 (90% margin)
2020 Census count: 2,045
Median household income
$250,000 or more
The survey's top or bottom value; no margin is published
Norfolk County: $130,739
Median home value
$2,000,000 or more
The survey's top or bottom value; no margin is published
Norfolk County: $683,900
Median gross rent
$3,123
±$336 (90% margin)
Norfolk County: $2,149
Where is Census Tract 4004.02?
Census Tract 4004.02 is one of 154 census tracts in Norfolk County, Massachusetts. It covers 0.17 square miles of land, 12,029 residents per square mile in 2020. Its GEOID, 25021400402, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Brookline | 100% |
5 census tracts border Census Tract 4004.02: Tract 4004.01 ($84,928), Tract 4005 ($154,688), Tract 4006 ($157,721), Tract 5.05 in Suffolk County ($84,417) and Tract 7.01 in Suffolk County ($99,679). 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 4004.02?
The 2020-2024 American Community Survey puts Census Tract 4004.02's population at 1,982 (±392) in 734 households; the 2020 Census counted 2,045 residents and 850 housing units.
| Measure | Tract 4004.02 | Brookline |
|---|---|---|
| Total population | 1,982±392 | 63,266 |
| Households | 734±121 | 27,587 |
| Average household size | 2.67±0.29 | 2.24 |
| Housing units | 774±121 | 28,873 |
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 4004.02?
The median resident of Census Tract 4004.02 is 39.5 years old; 22.3% are under 18 and 11.8% are 65 or older. The largest group is non-Hispanic white residents at 65.6%, then non-Hispanic Asian residents at 20.8%. 19.9% of residents were born outside the United States.
| Measure | Tract 4004.02 | Brookline |
|---|---|---|
| Median age | 39.5±5.6 | 35.2 |
| Under 18 years | 22.3%±6.0 pts | 18.7% |
| 65 years and over | 11.8%±4.3 pts | 15.8% |
| Hispanic or Latino (any race) | 7.0%±4.4 pts | 6.2% |
| White alone, not Hispanic | 65.6%±14.0 pts | 64.1% |
| Black or African American alone, not Hispanic | 1.0%±1.6 pts | 3.0% |
| Asian alone, not Hispanic | 20.8%±13.9 pts | 19.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±2.1 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±2.1 pts | 0.0% |
| Two or more races, not Hispanic | 5.0%±2.8 pts | 6.8% |
| Some other race alone, not Hispanic | 0.6%±1.0 pts | 0.6% |
| Born outside the United States | 19.9%±6.6 pts | 27.8% |
| Speak a language other than English at home (age 5+) | 19.9%±6.6 pts | 31.2% |
| Civilian veterans (age 18+) | 3.9%±3.6 pts | 2.0% |
| With a disability | 4.5%±2.2 pts | 7.5% |
| No health insurance coverage | 0.0%±2.1 pts | 1.0% |
| High school graduate or higher (age 25+) | 98.6%±1.3 pts | 97.6% |
| Bachelor's degree or higher (age 25+) | 84.8%±6.5 pts | 85.4% |
| Graduate or professional degree (age 25+) | 56.1%±8.2 pts | 57.9% |
| Lived in the same house a year earlier | 83.8%±6.8 pts | 78.8% |
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 4004.02 earn?
Half of the 734 households in Census Tract 4004.02 earn less than $250,000 or more a year (), against $130,739 across Norfolk County: 1st highest of the county's 152 tracts with a reliable estimate.
| Measure | Tract 4004.02 | Brookline |
|---|---|---|
| Median household income | $250,000 or more | $142,101 |
| Mean household income | $353,548±$70,822 | $219,714 |
| Per capita income | $128,370±$20,273 | $96,682 |
| People below the poverty line | 4.5%±3.7 pts | 8.7% |
| Children under 18 below the poverty line | 1.6%±2.7 pts | 4.7% |
| Households receiving SNAP | 3.4%±4.7 pts | 6.1% |
| Households with a computer | 95.4%±6.5 pts | 97.3% |
| Households with a broadband subscription | 94.4%±6.7 pts | 96.1% |
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 4004.02?
Owners occupy 60.9% of Census Tract 4004.02's occupied homes and renters 39.1%. The median owner-occupied home is valued at $2,000,000 or more by its owner (). The median renter pays $3,123 a month including utilities.
| Measure | Tract 4004.02 | Brookline |
|---|---|---|
| Median home value (owner-occupied) | $2,000,000 or more | $1,246,800 |
| Median gross rent | $3,123±$336 | $2,835 |
| Renters paying 35% or more of income on rent | 27.1%±19.2 pts | 37.6% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 60.9%±9.5 pts | 46.9% |
| Renter-occupied homes | 39.1%±9.5 pts | 53.1% |
| Housing units | 774±121 | 28,873 |
| Single-family detached homes | 38.4%±11.6 pts | 18.3% |
| Mobile homes | 0.0%±5.3 pts | 0.0% |
| Built 2020 or later | 0.0%±5.3 pts | 0.4% |
| Built 2010 to 2019 | 3.0%±3.7 pts | 2.7% |
| Built 1939 or earlier | 57.8%±10.2 pts | 51.7% |
| Households with no vehicle | 22.6%±8.6 pts | 26.9% |
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 4004.02 get to work?
34.0% of Census Tract 4004.02's workers drive alone and 29.1% work from home. The average trip to work takes 29.0 minutes.
| Measure | Tract 4004.02 | Brookline |
|---|---|---|
| In the labor force (age 16+) | 87.1%±3.9 pts | 73.2% |
| Unemployment rate | 4.0%±4.0 pts | 3.6% |
| Drove alone to work | 34.0%±8.5 pts | 28.4% |
| Carpooled | 6.3%±5.3 pts | 3.2% |
| Public transportation | 20.8%±6.0 pts | 18.1% |
| Walked | 8.1%±6.1 pts | 14.9% |
| Worked from home | 29.1%±6.9 pts | 30.1% |
| Mean travel time to work | 29.0 min±3.2 | 27.1 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 4004.02 compare with the other tracts in Norfolk County?
Among Norfolk County's tracts with a reliable estimate, Census Tract 4004.02 ranks as shown below (1 = highest).
| Measure | In Norfolk County | In Brookline |
|---|---|---|
| Population | 151st of 153 | 14th of 15 |
| Residents per square mile | 15th of 154 | 11th of 15 |
| Median household income | 1st of 152 | 1st of 14 |
| Per capita income | 4th of 153 | 1st of 15 |
| Median home value | 1st of 153 | 1st of 15 |
| Median gross rent | 9th of 130 | 3rd of 15 |
| Bachelor's degree or higher | 15th of 153 | 7th of 15 |
| Median age | 103rd of 153 | 2nd of 15 |
| Owner-occupied share | 111th of 153 | 6th of 15 |
The tracts next to it on Norfolk County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4004.02 | 1st | $250,000 or more |
| Tract 4012.01 | 1st | $250,000 or more |
| Tract 4033 | 1st | $250,000 or more |
| Tract 4042.01 | 1st | $250,000 or more |
| Tract 4043.01 | 1st | $250,000 or more |
| Tract 4044 | 1st | $250,000 or more |
| Tract 4051 | 1st | $250,000 or more |
| Tract 4061.02 | 1st | $250,000 or more |
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 4004.02?
3 of the 18 figures for Census Tract 4004.02 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