Census tract · San Mateo County
Census Tract 6140, San Mateo County, California
Census Tract 6140, GEOID 06081614000, in San Mateo County, California, mostly within San Bruno (95% of its census blocks). 6,299 residents in the ACS 2020-2024 5-year estimates (±609); the 2020 Census counted 6,172.
Residents, 2020-2024
6,299
±609 (90% margin)
2020 Census count: 6,172
Median household income
$212,067
±$22,438 (90% margin)
San Mateo County: $158,855
Median home value
$1,582,300
±$71,283 (90% margin)
San Mateo County: $1,559,600
Median gross rent
$3,147
±$265 (90% margin)
San Mateo County: $2,922
Where is Census Tract 6140?
Census Tract 6140 is one of 174 census tracts in San Mateo County, California. It covers 1.22 square miles of land, 5,051 residents per square mile in 2020. Its GEOID, 06081614000, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| San Bruno | 95% |
7 census tracts border Census Tract 6140: Tract 6027 ($162,458), Tract 6030 ($146,000), Tract 6031 ($220,250), Tract 6034 ($124,564), Tract 6037 ($140,670), Tract 6038.02 ($150,054) and Tract 6135.01 ($172,869). 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 6140?
The 2020-2024 American Community Survey puts Census Tract 6140's population at 6,299 (±609) in 1,901 households; the 2020 Census counted 6,172 residents and 2,009 housing units.
| Measure | Tract 6140 | San Bruno |
|---|---|---|
| Total population | 6,299 ±609 | 42,307 |
| Households | 1,901 ±250 | 15,224 |
| Average household size | 3.06 ±0.29 | 2.74 |
| Housing units | 2,084 ±280 | 16,433 |
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 6140?
The median resident of Census Tract 6140 is 41.4 years old; 16.7% are under 18 and 15.2% are 65 or older. The largest group is non-Hispanic Asian residents at 44.9%, then non-Hispanic white residents at 26.4%. 34.4% of residents were born outside the United States.
| Measure | Tract 6140 | San Bruno |
|---|---|---|
| Median age | 41.4 ±3.8 | 39.8 |
| Under 18 years | 16.7% ±2.5 pts | 16.9% |
| 65 years and over | 15.2% ±2.9 pts | 18.0% |
| Hispanic or Latino (any race) | 20.8% ±4.7 pts | 29.2% |
| White alone, not Hispanic | 26.4% ±5.4 pts | 28.6% |
| Black or African American alone, not Hispanic | 2.2% ±1.0 pts | 2.1% |
| Asian alone, not Hispanic | 44.9% ±7.3 pts | 31.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.4% ±0.3 pts | 2.6% |
| Two or more races, not Hispanic | 4.6% ±1.9 pts | 5.0% |
| Some other race alone, not Hispanic | 0.7% ±0.7 pts | 1.0% |
| Born outside the United States | 34.4% ±5.6 pts | 35.9% |
| Speak a language other than English at home (age 5+) | 43.3% ±6.9 pts | 45.7% |
| Civilian veterans (age 18+) | 1.6% ±0.9 pts | 3.3% |
| With a disability | 8.9% ±2.6 pts | 9.8% |
| No health insurance coverage | 1.5% ±1.3 pts | 4.9% |
| High school graduate or higher (age 25+) | 93.1% ±3.1 pts | 90.8% |
| Bachelor's degree or higher (age 25+) | 62.4% ±5.1 pts | 45.2% |
| Graduate or professional degree (age 25+) | 21.0% ±3.6 pts | 14.8% |
| Lived in the same house a year earlier | 83.5% ±5.7 pts | 90.1% |
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 6140 earn?
Half of the 1,901 households in Census Tract 6140 earn less than $212,067 a year (±$22,438), against $158,855 across San Mateo County: 43rd highest of the county's 172 tracts with a reliable estimate. 2.5% of residents live below the poverty line.
| Measure | Tract 6140 | San Bruno |
|---|---|---|
| Median household income | $212,067 ±$22,438 | $141,272 |
| Mean household income | $246,620 ±$28,314 | $176,521 |
| Per capita income | $75,813 ±$6,051 | $64,768 |
| People below the poverty line | 2.5% ±1.6 pts | 6.0% |
| Children under 18 below the poverty line | 2.0% ±2.6 pts | 2.7% |
| Households receiving SNAP | 4.3% ±4.0 pts | 4.9% |
| Households with a computer | 98.8% ±1.4 pts | 96.2% |
| Households with a broadband subscription | 99.1% ±1.4 pts | 94.6% |
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 6140?
Owners occupy 73.0% of Census Tract 6140's occupied homes and renters 27.0%. The median owner-occupied home is valued at $1,582,300 by its owner (±$71,283). The median renter pays $3,147 a month including utilities, and 43.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 6140 | San Bruno |
|---|---|---|
| Median home value (owner-occupied) | $1,582,300 ±$71,283 | $1,207,500 |
| Median gross rent | $3,147 ±$265 | $2,773 |
| Renters paying 35% or more of income on rent | 43.0% ±18.7 pts | 45.9% |
| Median monthly owner costs, with a mortgage | $3,929 ±$260 | $3,764 |
| Owner-occupied homes | 73.0% ±8.0 pts | 62.1% |
| Renter-occupied homes | 27.0% ±8.0 pts | 37.9% |
| Housing units | 2,084 ±280 | 16,433 |
| Single-family detached homes | 77.4% ±8.0 pts | 57.8% |
| Mobile homes | 0.0% ±2.0 pts | 0.7% |
| Built 2020 or later | 2.9% ±2.6 pts | 1.1% |
| Built 2010 to 2019 | 0.2% ±0.4 pts | 4.1% |
| Built 1939 or earlier | 0.7% ±0.8 pts | 7.5% |
| Households with no vehicle | 0.8% ±1.2 pts | 4.9% |
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 6140 get to work?
71.0% of Census Tract 6140's workers drive alone and 14.2% work from home. The average trip to work takes 28.1 minutes.
| Measure | Tract 6140 | San Bruno |
|---|---|---|
| In the labor force (age 16+) | 66.3% ±3.8 pts | 68.3% |
| Unemployment rate | 3.3% ±2.4 pts | 5.0% |
| Drove alone to work | 71.0% ±5.7 pts | 62.5% |
| Carpooled | 10.9% ±4.1 pts | 10.3% |
| Public transportation | 2.6% ±1.8 pts | 3.6% |
| Walked | 0.4% ±0.6 pts | 3.2% |
| Worked from home | 14.2% ±4.0 pts | 18.0% |
| Mean travel time to work | 28.1 min ±1.9 | 23.7 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 6140 compare with the other tracts in San Mateo County?
Among San Mateo County's tracts with a reliable estimate, Census Tract 6140 ranks as shown below (1 = highest).
| Measure | In San Mateo County | In San Bruno |
|---|---|---|
| Population | 19th of 172 | 1st of 10 |
| Residents per square mile | 128th of 173 | 9th of 10 |
| Median household income | 43rd of 172 | 1st of 10 |
| Per capita income | 93rd of 172 | 3rd of 10 |
| Median home value | 74th of 171 | 1st of 10 |
| Median gross rent | 79th of 169 | 3rd of 10 |
| Poverty rate | 90th of 94 | 4th of 5 |
| Bachelor's degree or higher | 65th of 172 | 1st of 10 |
| Median age | 89th of 172 | 5th of 10 |
| Owner-occupied share | 60th of 171 | 4th of 10 |
The tracts next to it on San Mateo County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 6031 | 40th | $220,250±$65,319 · within the margin of this tract |
| Tract 6052 | 41st | $218,818±$47,526 · within the margin of this tract |
| Tract 6058 | 42nd | $213,667±$92,378 · within the margin of this tract |
| Tract 6140 | 43rd | $212,067±$22,438 |
| Tract 6065 | 44th | $211,750±$47,276 · within the margin of this tract |
| Tract 6081 | 45th | $209,074±$24,519 · within the margin of this tract |
| Tract 6055.02 | 46th | $205,372±$40,963 · 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 6140?
Every figure for Census Tract 6140 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