Census tract · Alameda County
Census Tract 4301.02, Alameda County, California
Census Tract 4301.02, GEOID 06001430102, in Alameda County, California, partly within Castro Valley. 2,425 residents in the ACS 2020-2024 5-year estimates (±253); the 2020 Census counted 2,553.
Residents, 2020-2024
2,425
±253 (90% margin)
2020 Census count: 2,553
Median household income
$192,426
±$24,621 (90% margin)
Alameda County: $129,367
Median home value
$1,263,100
±$125,065 (90% margin)
Alameda County: $1,090,100
Median gross rent
$3,013
±$979 (90% margin)
Alameda County: $2,357
Where is Census Tract 4301.02?
Census Tract 4301.02 is one of 379 census tracts in Alameda County, California. It covers 29.99 square miles of land, 85 residents per square mile in 2020. Its GEOID, 06001430102, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Castro Valley | 35% |
13 census tracts border Census Tract 4301.02: Tract 4046 ($233,194), Tract 4080 ($216,989), Tract 4081 ($189,891), Tract 4099 ($203,385), Tract 4100 ($188,203), Tract 4301.01 ($214,477), Tract 4302 ($181,136), Tract 4303 ($175,772), Tract 4304 ($193,958), Tract 4308 ($106,016), Tract 3452.03 in Contra Costa County ($203,304), Tract 3521.02 in Contra Costa County ($250,000 or more) and Tract 3522.02 in Contra Costa County ($196,250). 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 4301.02?
The 2020-2024 American Community Survey puts Census Tract 4301.02's population at 2,425 (±253) in 893 households; the 2020 Census counted 2,553 residents and 949 housing units.
| Measure | Tract 4301.02 | Alameda County |
|---|---|---|
| Total population | 2,425±253 | 1,649,473 |
| Households | 893±115 | 598,246 |
| Average household size | 2.67±0.24 | 2.70 |
| Housing units | 939±112 | 637,212 |
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 4301.02?
The median resident of Census Tract 4301.02 is 49.8 years old; 18.8% are under 18 and 30.3% are 65 or older. The largest group is non-Hispanic white residents at 52.7%, then non-Hispanic Asian residents at 24.7%. 23.1% of residents were born outside the United States.
| Measure | Tract 4301.02 | Alameda County |
|---|---|---|
| Median age | 49.8±2.3 | 39.0 |
| Under 18 years | 18.8%±2.3 pts | 19.8% |
| 65 years and over | 30.3%±5.1 pts | 15.4% |
| Hispanic or Latino (any race) | 12.5%±5.0 pts | 23.4% |
| White alone, not Hispanic | 52.7%±6.6 pts | 27.4% |
| Black or African American alone, not Hispanic | 0.5%±0.8 pts | 9.3% |
| Asian alone, not Hispanic | 24.7%±5.5 pts | 32.7% |
| American Indian and Alaska Native alone, not Hispanic | 5.1%±4.9 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.7 pts | 0.7% |
| Two or more races, not Hispanic | 4.3%±2.8 pts | 5.6% |
| Some other race alone, not Hispanic | 0.3%±0.4 pts | 0.6% |
| Born outside the United States | 23.1%±5.9 pts | 34.7% |
| Speak a language other than English at home (age 5+) | 26.4%±6.2 pts | 47.2% |
| Civilian veterans (age 18+) | 2.3%±1.2 pts | 3.0% |
| With a disability | 11.7%±4.3 pts | 10.3% |
| No health insurance coverage | 0.5%±0.6 pts | 4.0% |
| High school graduate or higher (age 25+) | 91.0%±5.8 pts | 88.8% |
| Bachelor's degree or higher (age 25+) | 54.7%±7.6 pts | 52.2% |
| Graduate or professional degree (age 25+) | 27.6%±4.3 pts | 23.4% |
| Lived in the same house a year earlier | 92.6%±3.5 pts | 87.9% |
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 4301.02 earn?
Half of the 893 households in Census Tract 4301.02 earn less than $192,426 a year (±$24,621), against $129,367 across Alameda County: 73rd highest of the county's 372 tracts with a reliable estimate. 7.1% of residents live below the poverty line.
| Measure | Tract 4301.02 | Alameda County |
|---|---|---|
| Median household income | $192,426±$24,621 | $129,367 |
| Mean household income | $218,109±$33,017 | $177,144 |
| Per capita income | $82,263±$10,734 | $65,862 |
| People below the poverty line | 7.1%±3.1 pts | 9.2% |
| Children under 18 below the poverty line | 0.0%±9.0 pts | 8.8% |
| Households receiving SNAP | 6.3%±5.9 pts | 9.9% |
| Households with a computer | 99.3%±1.0 pts | 97.4% |
| Households with a broadband subscription | 96.3%±2.5 pts | 94.4% |
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 4301.02?
Owners occupy 86.3% of Census Tract 4301.02's occupied homes and renters 13.7%. The median owner-occupied home is valued at $1,263,100 by its owner (±$125,065). The median renter pays $3,013 a month including utilities, and 42.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 4301.02 | Alameda County |
|---|---|---|
| Median home value (owner-occupied) | $1,263,100±$125,065 | $1,090,100 |
| Median gross rent | $3,013±$979 | $2,357 |
| Renters paying 35% or more of income on rent | 42.9%±27.3 pts | 41.8% |
| Median monthly owner costs, with a mortgage | $3,670±$687 | $3,810 |
| Owner-occupied homes | 86.3%±5.1 pts | 54.4% |
| Renter-occupied homes | 13.7%±5.1 pts | 45.6% |
| Housing units | 939±112 | 637,212 |
| Single-family detached homes | 91.6%±4.4 pts | 51.0% |
| Mobile homes | 1.9%±2.4 pts | 1.3% |
| Built 2020 or later | 0.0%±4.4 pts | 1.4% |
| Built 2010 to 2019 | 0.0%±4.4 pts | 6.8% |
| Built 1939 or earlier | 4.6%±3.2 pts | 19.6% |
| Households with no vehicle | 1.2%±1.3 pts | 10.0% |
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 4301.02 get to work?
66.9% of Census Tract 4301.02's workers drive alone and 20.8% work from home. The average trip to work takes 30.1 minutes. The unemployment rate in 2020-2024 averaged 8.5%.
| Measure | Tract 4301.02 | Alameda County |
|---|---|---|
| In the labor force (age 16+) | 51.7%±4.4 pts | 66.9% |
| Unemployment rate | 8.5%±5.0 pts | 5.4% |
| Drove alone to work | 66.9%±8.8 pts | 52.6% |
| Carpooled | 10.0%±4.4 pts | 8.3% |
| Public transportation | 1.5%±1.5 pts | 7.7% |
| Walked | 0.6%±1.4 pts | 2.8% |
| Worked from home | 20.8%±7.4 pts | 25.7% |
| Mean travel time to work | 30.1 min±2.9 | 31.0 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 4301.02 compare with the other tracts in Alameda County?
Among Alameda County's tracts with a reliable estimate, Census Tract 4301.02 ranks as shown below (1 = highest).
| Measure | In Alameda County |
|---|---|
| Population | 341st of 375 |
| Residents per square mile | 373rd of 378 |
| Median household income | 73rd of 372 |
| Per capita income | 96th of 377 |
| Median home value | 97th of 366 |
| Median gross rent | 99th of 368 |
| Poverty rate | 171st of 263 |
| Bachelor's degree or higher | 190th of 376 |
| Median age | 20th of 377 |
| Owner-occupied share | 43rd of 366 |
The tracts next to it on Alameda County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4304 | 70th | $193,958±$44,141 · within the margin of this tract |
| Tract 4306 | 71st | $193,606±$28,686 · within the margin of this tract |
| Tract 4414.01 | 72nd | $192,500±$42,332 · within the margin of this tract |
| Tract 4301.02 | 73rd | $192,426±$24,621 |
| Tract 4283.02 | 74th | $192,198±$53,179 · within the margin of this tract |
| Tract 4287 | 75th | $191,528±$54,118 · within the margin of this tract |
| Tract 4419.24 | 76th | $190,826±$13,680 · 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 4301.02?
1 of the 18 figures for Census Tract 4301.02 on this page carries a coefficient of variation over 40% and is 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