Census tract · Alameda County
Census Tract 4239.01, Alameda County, California
Census Tract 4239.01, GEOID 06001423901, in Alameda County, California, entirely within Berkeley. 2,227 residents in the ACS 2020-2024 5-year estimates (±298); the 2020 Census counted 2,031.
Residents, 2020-2024
2,227
±298 (90% margin)
2020 Census count: 2,031
Median household income
$136,607
±$54,726 (90% margin)
Alameda County: $129,367
Median home value
$1,170,000
±$78,135 (90% margin)
Alameda County: $1,090,100
Median gross rent
$2,529
±$450 (90% margin)
Alameda County: $2,357
Where is Census Tract 4239.01?
Census Tract 4239.01 is one of 379 census tracts in Alameda County, California. It covers 0.15 square miles of land, 13,362 residents per square mile in 2020. Its GEOID, 06001423901, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Berkeley | 100% |
6 census tracts border Census Tract 4239.01: Tract 4005 ($96,641), Tract 4007 ($127,083), Tract 4235 ($103,702), Tract 4236.01 ($166,310), Tract 4239.02 ($165,893) and Tract 4240.01 ($82,125). 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 4239.01?
The 2020-2024 American Community Survey puts Census Tract 4239.01's population at 2,227 (±298) in 969 households; the 2020 Census counted 2,031 residents and 960 housing units.
| Measure | Tract 4239.01 | Berkeley |
|---|---|---|
| Total population | 2,227±298 | 120,257 |
| Households | 969±117 | 47,135 |
| Average household size | 2.28±0.24 | 2.27 |
| Housing units | 987±113 | 53,145 |
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 4239.01?
The median resident of Census Tract 4239.01 is 34.9 years old; 16.7% are under 18 and 17.4% are 65 or older. The largest group is non-Hispanic white residents at 47.3%, then Hispanic or Latino residents (of any race) at 16.8%. 19.3% of residents were born outside the United States.
| Measure | Tract 4239.01 | Berkeley |
|---|---|---|
| Median age | 34.9±2.8 | 33.2 |
| Under 18 years | 16.7%±3.7 pts | 12.7% |
| 65 years and over | 17.4%±3.9 pts | 16.7% |
| Hispanic or Latino (any race) | 16.8%±9.2 pts | 12.8% |
| White alone, not Hispanic | 47.3%±10.1 pts | 49.9% |
| Black or African American alone, not Hispanic | 9.7%±5.2 pts | 7.7% |
| Asian alone, not Hispanic | 14.2%±5.6 pts | 20.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.9 pts | 0.1% |
| Two or more races, not Hispanic | 10.6%±4.6 pts | 8.0% |
| Some other race alone, not Hispanic | 1.3%±1.5 pts | 1.1% |
| Born outside the United States | 19.3%±7.9 pts | 21.1% |
| Speak a language other than English at home (age 5+) | 33.9%±10.7 pts | 30.7% |
| Civilian veterans (age 18+) | 3.9%±2.4 pts | 2.1% |
| With a disability | 17.2%±4.9 pts | 10.9% |
| No health insurance coverage | 2.3%±2.1 pts | 2.8% |
| High school graduate or higher (age 25+) | 93.4%±5.9 pts | 95.8% |
| Bachelor's degree or higher (age 25+) | 75.4%±7.2 pts | 74.9% |
| Graduate or professional degree (age 25+) | 41.6%±6.9 pts | 42.0% |
| Lived in the same house a year earlier | 88.8%±4.4 pts | 74.8% |
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 4239.01 earn?
Half of the 969 households in Census Tract 4239.01 earn less than $136,607 a year (±$54,726), against $129,367 across Alameda County: 164th highest of the county's 372 tracts with a reliable estimate. 9.0% of residents live below the poverty line.
| Measure | Tract 4239.01 | Berkeley |
|---|---|---|
| Median household income | $136,607±$54,726 | $108,092 |
| Mean household income | $161,392±$20,386 | $171,265 |
| Per capita income | $71,674±$10,262 | $69,534 |
| People below the poverty line | 9.0%±4.3 pts | 17.3% |
| Children under 18 below the poverty line | 0.0%±11.0 pts | 7.6% |
| Households receiving SNAP | 9.2%±5.1 pts | 9.7% |
| Households with a computer | 96.9%±2.5 pts | 98.0% |
| Households with a broadband subscription | 96.1%±2.7 pts | 94.3% |
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 4239.01?
Owners occupy 38.9% of Census Tract 4239.01's occupied homes and renters 61.1%. The median owner-occupied home is valued at $1,170,000 by its owner (±$78,135). The median renter pays $2,529 a month including utilities, and 27.1% of renters pay 35% or more of their income on rent.
| Measure | Tract 4239.01 | Berkeley |
|---|---|---|
| Median home value (owner-occupied) | $1,170,000±$78,135 | $1,413,900 |
| Median gross rent | $2,529±$450 | $2,133 |
| Renters paying 35% or more of income on rent | 27.1%±11.3 pts | 48.6% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 38.9%±8.2 pts | 44.2% |
| Renter-occupied homes | 61.1%±8.2 pts | 55.8% |
| Housing units | 987±113 | 53,145 |
| Single-family detached homes | 36.5%±9.1 pts | 40.4% |
| Mobile homes | 0.0%±4.2 pts | 0.2% |
| Built 2020 or later | 0.6%±1.0 pts | 0.7% |
| Built 2010 to 2019 | 0.5%±0.9 pts | 5.9% |
| Built 1939 or earlier | 62.5%±8.8 pts | 46.3% |
| Households with no vehicle | 15.4%±6.3 pts | 20.7% |
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 4239.01 get to work?
33.9% of Census Tract 4239.01's workers drive alone and 27.0% work from home. The average trip to work takes 26.2 minutes.
| Measure | Tract 4239.01 | Berkeley |
|---|---|---|
| In the labor force (age 16+) | 70.8%±4.8 pts | 60.1% |
| Unemployment rate | 2.7%±2.7 pts | 5.6% |
| Drove alone to work | 33.9%±8.1 pts | 27.2% |
| Carpooled | 11.6%±7.5 pts | 3.3% |
| Public transportation | 14.2%±4.4 pts | 12.4% |
| Walked | 2.7%±3.0 pts | 13.6% |
| Worked from home | 27.0%±8.7 pts | 37.1% |
| Mean travel time to work | 26.2 min±4.8 | 27.8 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 4239.01 compare with the other tracts in Alameda County?
Among Alameda County's tracts with a reliable estimate, Census Tract 4239.01 ranks as shown below (1 = highest).
| Measure | In Alameda County | In Berkeley |
|---|---|---|
| Population | 347th of 375 | 27th of 34 |
| Residents per square mile | 118th of 378 | 19th of 34 |
| Median household income | 164th of 372 | 14th of 31 |
| Per capita income | 166th of 377 | 20th of 34 |
| Median home value | 130th of 366 | 24th of 30 |
| Median gross rent | 172nd of 368 | 10th of 34 |
| Poverty rate | 135th of 263 | 20th of 29 |
| Bachelor's degree or higher | 65th of 376 | 20th of 34 |
| Median age | 313th of 377 | 22nd of 34 |
| Owner-occupied share | 265th of 366 | 19th of 30 |
The tracts next to it on Alameda County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4205 | 161st | $137,105±$18,283 · within the margin of this tract |
| Tract 4426.01 | 162nd | $137,051±$56,254 · within the margin of this tract |
| Tract 4010 | 163rd | $136,728±$26,870 · within the margin of this tract |
| Tract 4239.01 | 164th | $136,607±$54,726 |
| Tract 4050 | 165th | $136,406±$20,632 · within the margin of this tract |
| Tract 4334 | 166th | $135,536±$55,288 · within the margin of this tract |
| Tract 4430.02 | 167th | $135,313±$38,100 · 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 4239.01?
Every figure for Census Tract 4239.01 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