Census tract · Contra Costa County
Census Tract 3902, Contra Costa County, California
Census Tract 3902, GEOID 06013390200, in Contra Costa County, California, entirely within El Cerrito, Contra Costa County. 1,830 residents in the ACS 2020-2024 5-year estimates (±171); the 2020 Census counted 1,860.
Residents, 2020-2024
1,830
±171 (90% margin)
2020 Census count: 1,860
Median household income
$192,667
±$30,209 (90% margin)
Contra Costa County: $127,229
Median home value
$1,203,500
±$54,416 (90% margin)
Contra Costa County: $866,800
Median gross rent
$3,212
±$483 (90% margin)
Contra Costa County: $2,375
Where is Census Tract 3902?
Census Tract 3902 is one of 242 census tracts in Contra Costa County, California. It covers 0.24 square miles of land, 7,686 residents per square mile in 2020. Its GEOID, 06013390200, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| El Cerrito, Contra Costa County | 100% |
5 census tracts border Census Tract 3902: Tract 4201 in Alameda County ($197,813), Tract 3880 ($115,313), Tract 3891 ($85,045), Tract 3901 ($187,750) and Tract 3910 ($195,250). 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 3902?
The 2020-2024 American Community Survey puts Census Tract 3902's population at 1,830 (±171) in 770 households; the 2020 Census counted 1,860 residents and 799 housing units.
| Measure | Tract 3902 | El Cerrito, Contra Costa County |
|---|---|---|
| Total population | 1,830±171 | 25,994 |
| Households | 770±98 | 10,831 |
| Average household size | 2.32±0.15 | 2.39 |
| Housing units | 803±100 | 11,247 |
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 3902?
The median resident of Census Tract 3902 is 47.0 years old; 17.4% are under 18 and 23.8% are 65 or older. The largest group is non-Hispanic white residents at 64.9%, then non-Hispanic Asian residents at 17.6%. 22.1% of residents were born outside the United States.
| Measure | Tract 3902 | El Cerrito, Contra Costa County |
|---|---|---|
| Median age | 47.0±1.9 | 41.8 |
| Under 18 years | 17.4%±2.5 pts | 16.9% |
| 65 years and over | 23.8%±2.1 pts | 20.6% |
| Hispanic or Latino (any race) | 10.9%±5.0 pts | 14.8% |
| White alone, not Hispanic | 64.9%±6.7 pts | 44.1% |
| Black or African American alone, not Hispanic | 0.1%±0.1 pts | 5.2% |
| Asian alone, not Hispanic | 17.6%±4.2 pts | 28.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±2.3 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±2.3 pts | 0.2% |
| Two or more races, not Hispanic | 6.6%±3.1 pts | 6.8% |
| Some other race alone, not Hispanic | 0.0%±2.3 pts | 0.5% |
| Born outside the United States | 22.1%±5.4 pts | 31.4% |
| Speak a language other than English at home (age 5+) | 26.3%±6.6 pts | 36.7% |
| Civilian veterans (age 18+) | 2.3%±1.5 pts | 2.4% |
| With a disability | 7.1%±2.4 pts | 9.3% |
| No health insurance coverage | 1.6%±1.2 pts | 3.5% |
| High school graduate or higher (age 25+) | 98.7%±1.5 pts | 96.3% |
| Bachelor's degree or higher (age 25+) | 77.7%±5.6 pts | 67.6% |
| Graduate or professional degree (age 25+) | 39.8%±6.8 pts | 32.2% |
| Lived in the same house a year earlier | 86.7%±5.4 pts | 84.8% |
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 3902 earn?
Half of the 770 households in Census Tract 3902 earn less than $192,667 a year (±$30,209), against $127,229 across Contra Costa County: 42nd highest of the county's 239 tracts with a reliable estimate.
| Measure | Tract 3902 | El Cerrito, Contra Costa County |
|---|---|---|
| Median household income | $192,667±$30,209 | $127,876 |
| Mean household income | $236,775±$29,618 | $175,127 |
| Per capita income | $99,105±$11,509 | $73,055 |
| People below the poverty line | 1.5%±1.3 pts | 6.9% |
| Children under 18 below the poverty line | 0.0%±12.5 pts | 2.5% |
| Households receiving SNAP | 1.7%±1.8 pts | 4.5% |
| Households with a computer | 98.2%±1.7 pts | 96.9% |
| Households with a broadband subscription | 98.2%±1.6 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 3902?
Owners occupy 90.3% of Census Tract 3902's occupied homes and renters 9.7%. The median owner-occupied home is valued at $1,203,500 by its owner (±$54,416). The median renter pays $3,212 a month including utilities.
| Measure | Tract 3902 | El Cerrito, Contra Costa County |
|---|---|---|
| Median home value (owner-occupied) | $1,203,500±$54,416 | $1,124,400 |
| Median gross rent | $3,212±$483 | $2,548 |
| Renters paying 35% or more of income on rent | 6.3%±10.7 pts | 42.0% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 90.3%±4.6 pts | 58.6% |
| Renter-occupied homes | 9.7%±4.6 pts | 41.4% |
| Housing units | 803±100 | 11,247 |
| Single-family detached homes | 99.4%±0.9 pts | 66.6% |
| Mobile homes | 0.0%±5.2 pts | 0.0% |
| Built 2020 or later | 0.0%±5.2 pts | 0.5% |
| Built 2010 to 2019 | 0.0%±5.2 pts | 3.4% |
| Built 1939 or earlier | 41.7%±9.0 pts | 13.5% |
| Households with no vehicle | 4.3%±2.5 pts | 7.4% |
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 3902 get to work?
34.0% of Census Tract 3902's workers drive alone and 34.9% work from home. The average trip to work takes 33.7 minutes. The unemployment rate in 2020-2024 averaged 4.8%.
| Measure | Tract 3902 | El Cerrito, Contra Costa County |
|---|---|---|
| In the labor force (age 16+) | 64.6%±3.6 pts | 65.7% |
| Unemployment rate | 4.8%±2.3 pts | 5.8% |
| Drove alone to work | 34.0%±6.2 pts | 40.6% |
| Carpooled | 3.4%±2.6 pts | 5.9% |
| Public transportation | 18.0%±8.6 pts | 15.3% |
| Walked | 4.2%±2.9 pts | 2.7% |
| Worked from home | 34.9%±8.5 pts | 31.8% |
| Mean travel time to work | 33.7 min±4.2 | 33.3 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 3902 compare with the other tracts in Contra Costa County?
Among Contra Costa County's tracts with a reliable estimate, Census Tract 3902 ranks as shown below (1 = highest).
| Measure | In Contra Costa County | In El Cerrito, Contra Costa County |
|---|---|---|
| Population | 235th of 241 | 8th of 10 |
| Residents per square mile | 51st of 241 | 6th of 10 |
| Median household income | 42nd of 239 | 1st of 10 |
| Per capita income | 31st of 241 | 1st of 10 |
| Median home value | 58th of 236 | 3rd of 10 |
| Median gross rent | 55th of 236 | 4th of 10 |
| Bachelor's degree or higher | 25th of 239 | 1st of 10 |
| Median age | 42nd of 241 | 4th of 10 |
| Owner-occupied share | 36th of 240 | 1st of 10 |
The tracts next to it on Contra Costa County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 3522.02 | 39th | $196,250±$31,935 · within the margin of this tract |
| Tract 3910 | 40th | $195,250±$47,042 · within the margin of this tract |
| Tract 3500 | 41st | $192,961±$25,700 · within the margin of this tract |
| Tract 3902 | 42nd | $192,667±$30,209 |
| Tract 3553.09 | 43rd | $190,882±$25,976 · within the margin of this tract |
| Tract 3451.02 | 44th | $189,375±$12,629 · within the margin of this tract |
| Tract 3342 | 45th | $189,153±$64,889 · 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 3902?
2 of the 18 figures for Census Tract 3902 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