Census tract · Norfolk County
Census Tract 4007, Norfolk County, Massachusetts
Census Tract 4007, GEOID 25021400700, in Norfolk County, Massachusetts, entirely within Brookline. 4,121 residents in the ACS 2020-2024 5-year estimates (±469); the 2020 Census counted 3,986.
Residents, 2020-2024
4,121
±469 (90% margin)
2020 Census count: 3,986
Median household income
$175,000
±$41,039 (90% margin)
Norfolk County: $130,739
Median home value
$1,240,900
±$413,080 (90% margin)
Norfolk County: $683,900
Median gross rent
$2,934
±$251 (90% margin)
Norfolk County: $2,149
Where is Census Tract 4007?
Census Tract 4007 is one of 154 census tracts in Norfolk County, Massachusetts. It covers 0.23 square miles of land, 17,034 residents per square mile in 2020. Its GEOID, 25021400700, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Brookline | 100% |
5 census tracts border Census Tract 4007: Tract 4005 ($154,688), Tract 4006 ($157,721), Tract 4008 ($143,723), Tract 4009 ($82,109) and Tract 4010 ($138,182). 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 4007?
The 2020-2024 American Community Survey puts Census Tract 4007's population at 4,121 (±469) in 1,690 households; the 2020 Census counted 3,986 residents and 1,584 housing units.
| Measure | Tract 4007 | Brookline |
|---|---|---|
| Total population | 4,121±469 | 63,266 |
| Households | 1,690±198 | 27,587 |
| Average household size | 2.44±0.16 | 2.24 |
| Housing units | 1,698±198 | 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 4007?
The median resident of Census Tract 4007 is 31.9 years old; 18.7% are under 18 and 13.3% are 65 or older. The largest group is non-Hispanic white residents at 75.0%, then non-Hispanic Asian residents at 12.2%. 21.2% of residents were born outside the United States.
| Measure | Tract 4007 | Brookline |
|---|---|---|
| Median age | 31.9±4.4 | 35.2 |
| Under 18 years | 18.7%±3.9 pts | 18.7% |
| 65 years and over | 13.3%±3.3 pts | 15.8% |
| Hispanic or Latino (any race) | 3.6%±2.0 pts | 6.2% |
| White alone, not Hispanic | 75.0%±5.4 pts | 64.1% |
| Black or African American alone, not Hispanic | 1.5%±1.2 pts | 3.0% |
| Asian alone, not Hispanic | 12.2%±3.3 pts | 19.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.0 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.0 pts | 0.0% |
| Two or more races, not Hispanic | 6.2%±4.3 pts | 6.8% |
| Some other race alone, not Hispanic | 1.5%±1.5 pts | 0.6% |
| Born outside the United States | 21.2%±5.8 pts | 27.8% |
| Speak a language other than English at home (age 5+) | 26.4%±6.1 pts | 31.2% |
| Civilian veterans (age 18+) | 0.5%±0.6 pts | 2.0% |
| With a disability | 5.5%±2.5 pts | 7.5% |
| No health insurance coverage | 1.0%±0.9 pts | 1.0% |
| High school graduate or higher (age 25+) | 100.0%±1.5 pts | 97.6% |
| Bachelor's degree or higher (age 25+) | 96.1%±2.0 pts | 85.4% |
| Graduate or professional degree (age 25+) | 63.2%±6.7 pts | 57.9% |
| Lived in the same house a year earlier | 79.8%±6.4 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 4007 earn?
Half of the 1,690 households in Census Tract 4007 earn less than $175,000 a year (±$41,039), against $130,739 across Norfolk County: 38th highest of the county's 152 tracts with a reliable estimate.
| Measure | Tract 4007 | Brookline |
|---|---|---|
| Median household income | $175,000±$41,039 | $142,101 |
| Mean household income | $264,127±$36,453 | $219,714 |
| Per capita income | $108,998±$17,135 | $96,682 |
| People below the poverty line | 10.7%±7.3 pts | 8.7% |
| Children under 18 below the poverty line | 0.0%±5.4 pts | 4.7% |
| Households receiving SNAP | 2.4%±2.9 pts | 6.1% |
| Households with a computer | 99.4%±0.9 pts | 97.3% |
| Households with a broadband subscription | 99.4%±0.9 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 4007?
Owners occupy 53.5% of Census Tract 4007's occupied homes and renters 46.5%. The median owner-occupied home is valued at $1,240,900 by its owner (±$413,080). The median renter pays $2,934 a month including utilities, and 42.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 4007 | Brookline |
|---|---|---|
| Median home value (owner-occupied) | $1,240,900±$413,080 | $1,246,800 |
| Median gross rent | $2,934±$251 | $2,835 |
| Renters paying 35% or more of income on rent | 42.8%±11.2 pts | 37.6% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 53.5%±8.3 pts | 46.9% |
| Renter-occupied homes | 46.5%±8.3 pts | 53.1% |
| Housing units | 1,698±198 | 28,873 |
| Single-family detached homes | 21.0%±5.4 pts | 18.3% |
| Mobile homes | 0.0%±2.5 pts | 0.0% |
| Built 2020 or later | 0.0%±2.5 pts | 0.4% |
| Built 2010 to 2019 | 6.0%±3.8 pts | 2.7% |
| Built 1939 or earlier | 56.5%±8.2 pts | 51.7% |
| Households with no vehicle | 26.9%±9.7 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 4007 get to work?
28.1% of Census Tract 4007's workers drive alone and 24.7% work from home. The average trip to work takes 28.3 minutes.
| Measure | Tract 4007 | Brookline |
|---|---|---|
| In the labor force (age 16+) | 79.8%±5.0 pts | 73.2% |
| Unemployment rate | 2.6%±3.5 pts | 3.6% |
| Drove alone to work | 28.1%±6.9 pts | 28.4% |
| Carpooled | 1.6%±1.3 pts | 3.2% |
| Public transportation | 24.7%±7.4 pts | 18.1% |
| Walked | 10.4%±4.1 pts | 14.9% |
| Worked from home | 24.7%±6.9 pts | 30.1% |
| Mean travel time to work | 28.3 min±2.5 | 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 4007 compare with the other tracts in Norfolk County?
Among Norfolk County's tracts with a reliable estimate, Census Tract 4007 ranks as shown below (1 = highest).
| Measure | In Norfolk County | In Brookline |
|---|---|---|
| Population | 96th of 153 | 8th of 15 |
| Residents per square mile | 8th of 154 | 8th of 15 |
| Median household income | 38th of 152 | 5th of 14 |
| Per capita income | 15th of 153 | 6th of 15 |
| Median home value | 17th of 153 | 8th of 15 |
| Median gross rent | 19th of 130 | 8th of 15 |
| Bachelor's degree or higher | 1st of 153 | 1st of 15 |
| Median age | 148th of 153 | 13th of 15 |
| Owner-occupied share | 120th of 153 | 7th of 15 |
The tracts next to it on Norfolk County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4197 | 35th | $180,375±$33,736 · within the margin of this tract |
| Tract 4091.01 | 36th | $175,577±$48,162 · within the margin of this tract |
| Tract 4112 | 37th | $175,370±$29,551 · within the margin of this tract |
| Tract 4007 | 38th | $175,000±$41,039 |
| Tract 4123 | 39th | $172,798±$30,876 · within the margin of this tract |
| Tract 4043.02 | 40th | $171,786±$47,827 · within the margin of this tract |
| Tract 4081.04 | 41st | $168,365±$34,888 · 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 4007?
2 of the 18 figures for Census Tract 4007 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