Census tract · Santa Clara County
Census Tract 5120.31, Santa Clara County, California
Census Tract 5120.31, GEOID 06085512031, in Santa Clara County, California, entirely within San Jose. 4,099 residents in the ACS 2020-2024 5-year estimates (±395); the 2020 Census counted 4,447.
Residents, 2020-2024
4,099
±395 (90% margin)
2020 Census count: 4,447
Median household income
$196,727
±$38,987 (90% margin)
Santa Clara County: $164,281
Median home value
$1,389,200
±$62,624 (90% margin)
Santa Clara County: $1,490,600
Median gross rent
$3,500 or more
The survey's top or bottom value; no margin is published
Santa Clara County: $2,857
Where is Census Tract 5120.31?
Census Tract 5120.31 is one of 408 census tracts in Santa Clara County, California. It covers 0.55 square miles of land, 8,027 residents per square mile in 2020. Its GEOID, 06085512031, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| San Jose | 100% |
4 census tracts border Census Tract 5120.31: Tract 5119.11 ($167,639), Tract 5120.30 ($181,326), Tract 5120.36 ($138,841) and Tract 5120.59 ($176,250). 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 5120.31?
The 2020-2024 American Community Survey puts Census Tract 5120.31's population at 4,099 (±395) in 1,372 households; the 2020 Census counted 4,447 residents and 1,400 housing units.
| Measure | Tract 5120.31 | San Jose |
|---|---|---|
| Total population | 4,099±395 | 990,138 |
| Households | 1,372±157 | 328,550 |
| Average household size | 2.96±0.25 | 2.97 |
| Housing units | 1,372±157 | 345,066 |
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 5120.31?
The median resident of Census Tract 5120.31 is 43.1 years old; 25.2% are under 18 and 15.9% are 65 or older. The largest group is non-Hispanic white residents at 39.8%, then non-Hispanic Asian residents at 32.2%. 27.2% of residents were born outside the United States.
| Measure | Tract 5120.31 | San Jose |
|---|---|---|
| Median age | 43.1±3.1 | 38.2 |
| Under 18 years | 25.2%±2.9 pts | 20.5% |
| 65 years and over | 15.9%±3.8 pts | 14.5% |
| Hispanic or Latino (any race) | 16.3%±5.7 pts | 30.8% |
| White alone, not Hispanic | 39.8%±6.1 pts | 22.3% |
| Black or African American alone, not Hispanic | 0.4%±0.7 pts | 2.7% |
| Asian alone, not Hispanic | 32.2%±7.6 pts | 39.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.0 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.0 pts | 0.5% |
| Two or more races, not Hispanic | 10.0%±5.1 pts | 3.8% |
| Some other race alone, not Hispanic | 1.3%±1.4 pts | 0.5% |
| Born outside the United States | 27.2%±5.6 pts | 42.0% |
| Speak a language other than English at home (age 5+) | 35.3%±7.2 pts | 58.9% |
| Civilian veterans (age 18+) | 4.8%±1.9 pts | 2.6% |
| With a disability | 9.2%±2.4 pts | 9.7% |
| No health insurance coverage | 0.8%±0.9 pts | 4.8% |
| High school graduate or higher (age 25+) | 97.6%±1.7 pts | 85.4% |
| Bachelor's degree or higher (age 25+) | 61.8%±6.7 pts | 47.3% |
| Graduate or professional degree (age 25+) | 27.3%±7.0 pts | 20.9% |
| Lived in the same house a year earlier | 90.3%±5.4 pts | 88.2% |
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 5120.31 earn?
Half of the 1,372 households in Census Tract 5120.31 earn less than $196,727 a year (±$38,987), against $164,281 across Santa Clara County: 133rd highest of the county's 404 tracts with a reliable estimate.
| Measure | Tract 5120.31 | San Jose |
|---|---|---|
| Median household income | $196,727±$38,987 | $146,427 |
| Mean household income | $245,550±$33,090 | $194,463 |
| Per capita income | $83,764±$9,612 | $65,945 |
| People below the poverty line | 4.5%±3.5 pts | 8.1% |
| Children under 18 below the poverty line | 2.1%±3.0 pts | 8.2% |
| Households receiving SNAP | 2.0%±2.2 pts | 8.9% |
| Households with a computer | 99.4%±0.9 pts | 97.7% |
| Households with a broadband subscription | 99.4%±0.9 pts | 95.4% |
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 5120.31?
Owners occupy 90.2% of Census Tract 5120.31's occupied homes and renters 9.8%. The median owner-occupied home is valued at $1,389,200 by its owner (±$62,624). The median renter pays $3,500 or more a month including utilities.
| Measure | Tract 5120.31 | San Jose |
|---|---|---|
| Median home value (owner-occupied) | $1,389,200±$62,624 | $1,233,200 |
| Median gross rent | $3,500 or more | $2,669 |
| Renters paying 35% or more of income on rent | 26.8%±21.7 pts | 40.1% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 90.2%±4.4 pts | 55.8% |
| Renter-occupied homes | 9.8%±4.4 pts | 44.2% |
| Housing units | 1,372±157 | 345,066 |
| Single-family detached homes | 99.6%±0.7 pts | 51.3% |
| Mobile homes | 0.0%±3.0 pts | 3.4% |
| Built 2020 or later | 0.0%±3.0 pts | 1.0% |
| Built 2010 to 2019 | 0.0%±3.0 pts | 7.8% |
| Built 1939 or earlier | 0.0%±3.0 pts | 5.2% |
| Households with no vehicle | 0.9%±1.2 pts | 6.1% |
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 5120.31 get to work?
59.8% of Census Tract 5120.31's workers drive alone and 32.5% work from home. The average trip to work takes 33.9 minutes. The unemployment rate in 2020-2024 averaged 2.9%.
| Measure | Tract 5120.31 | San Jose |
|---|---|---|
| In the labor force (age 16+) | 60.1%±4.5 pts | 67.7% |
| Unemployment rate | 2.9%±1.9 pts | 5.1% |
| Drove alone to work | 59.8%±8.0 pts | 62.9% |
| Carpooled | 5.7%±5.2 pts | 10.7% |
| Public transportation | 1.6%±2.2 pts | 2.4% |
| Walked | 0.0%±2.3 pts | 1.8% |
| Worked from home | 32.5%±7.4 pts | 20.3% |
| Mean travel time to work | 33.9 min±2.9 | 27.3 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 5120.31 compare with the other tracts in Santa Clara County?
Among Santa Clara County's tracts with a reliable estimate, Census Tract 5120.31 ranks as shown below (1 = highest).
| Measure | In Santa Clara County | In San Jose |
|---|---|---|
| Population | 253rd of 408 | 134th of 216 |
| Residents per square mile | 219th of 408 | 131st of 216 |
| Median household income | 133rd of 404 | 40th of 213 |
| Per capita income | 175th of 408 | 50th of 216 |
| Median home value | 197th of 395 | 67th of 210 |
| Median gross rent | 1st of 394 | 1st of 206 |
| Bachelor's degree or higher | 174th of 408 | 48th of 216 |
| Median age | 103rd of 408 | 42nd of 216 |
| Owner-occupied share | 21st of 397 | 11th of 209 |
The tracts next to it on Santa Clara County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 5060 | 130th | $197,202±$19,857 · within the margin of this tract |
| Tract 5049.02 | 131st | $196,797±$53,814 · within the margin of this tract |
| Tract 5118 | 132nd | $196,786±$67,976 · within the margin of this tract |
| Tract 5120.31 | 133rd | $196,727±$38,987 |
| Tract 5086.01 | 134th | $195,804±$30,580 · within the margin of this tract |
| Tract 5047 | 135th | $194,917±$74,772 · within the margin of this tract |
| Tract 5068.03 | 136th | $194,219±$63,823 · 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 5120.31?
2 of the 18 figures for Census Tract 5120.31 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