Census tract · Contra Costa County
Census Tract 3530.01, Contra Costa County, California
Census Tract 3530.01, GEOID 06013353001, in Contra Costa County, California, mostly within Orinda (78% of its census blocks). 4,718 residents in the ACS 2020-2024 5-year estimates (±638); the 2020 Census counted 4,256.
Residents, 2020-2024
4,718
±638 (90% margin)
2020 Census count: 4,256
Median household income
$250,000 or more
The survey's top or bottom value; no margin is published
Contra Costa County: $127,229
Median home value
$1,777,600
±$152,250 (90% margin)
Contra Costa County: $866,800
Median gross rent
$3,500 or more
The survey's top or bottom value; no margin is published
Contra Costa County: $2,375
Where is Census Tract 3530.01?
Census Tract 3530.01 is one of 242 census tracts in Contra Costa County, California. It covers 5.29 square miles of land, 805 residents per square mile in 2020. Its GEOID, 06013353001, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Orinda | 78% |
9 census tracts border Census Tract 3530.01: Tract 4001 in Alameda County ($250,000 or more), Tract 4044 in Alameda County ($231,597), Tract 4045.02 in Alameda County ($250,000 or more), Tract 3500 ($192,961), Tract 3522.01 ($182,760), Tract 3522.02 ($196,250), Tract 3530.02 ($250,000 or more), Tract 3540.01 ($231,108) and Tract 3540.02 ($250,000 or more). 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 3530.01?
The 2020-2024 American Community Survey puts Census Tract 3530.01's population at 4,718 (±638) in 1,528 households; the 2020 Census counted 4,256 residents and 1,524 housing units.
| Measure | Tract 3530.01 | Orinda |
|---|---|---|
| Total population | 4,718±638 | 19,514 |
| Households | 1,528±138 | 7,277 |
| Average household size | 3.09±0.29 | 2.67 |
| Housing units | 1,583±135 | 7,475 |
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 3530.01?
The median resident of Census Tract 3530.01 is 41.1 years old; 33.5% are under 18 and 16.9% are 65 or older. The largest group is non-Hispanic white residents at 53.7%, then non-Hispanic Asian residents at 26.6%. 27.1% of residents were born outside the United States.
| Measure | Tract 3530.01 | Orinda |
|---|---|---|
| Median age | 41.1±4.7 | 47.5 |
| Under 18 years | 33.5%±5.3 pts | 25.4% |
| 65 years and over | 16.9%±3.6 pts | 23.3% |
| Hispanic or Latino (any race) | 4.7%±2.3 pts | 6.5% |
| White alone, not Hispanic | 53.7%±7.5 pts | 66.8% |
| Black or African American alone, not Hispanic | 0.3%±0.4 pts | 0.4% |
| Asian alone, not Hispanic | 26.6%±4.2 pts | 16.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.9 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.9 pts | 0.0% |
| Two or more races, not Hispanic | 14.7%±8.2 pts | 9.8% |
| Some other race alone, not Hispanic | 0.0%±0.9 pts | 0.3% |
| Born outside the United States | 27.1%±5.4 pts | 18.6% |
| Speak a language other than English at home (age 5+) | 27.7%±6.4 pts | 19.9% |
| Civilian veterans (age 18+) | 3.4%±2.1 pts | 3.9% |
| With a disability | 5.7%±2.2 pts | 6.8% |
| No health insurance coverage | 1.8%±1.2 pts | 0.9% |
| High school graduate or higher (age 25+) | 98.3%±1.8 pts | 98.2% |
| Bachelor's degree or higher (age 25+) | 84.4%±5.6 pts | 85.9% |
| Graduate or professional degree (age 25+) | 47.8%±7.1 pts | 47.0% |
| Lived in the same house a year earlier | 93.2%±3.7 pts | 92.9% |
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 3530.01 earn?
Half of the 1,528 households in Census Tract 3530.01 earn less than $250,000 or more a year (), against $127,229 across Contra Costa County: 1st highest of the county's 239 tracts with a reliable estimate.
| Measure | Tract 3530.01 | Orinda |
|---|---|---|
| Median household income | $250,000 or more | $250,000 or more |
| Mean household income | $370,420±$49,656 | $376,741 |
| Per capita income | $120,106±$21,330 | $140,621 |
| People below the poverty line | 2.2%±2.2 pts | 2.2% |
| Children under 18 below the poverty line | 1.4%±2.3 pts | 0.4% |
| Households receiving SNAP | 3.7%±3.2 pts | 1.9% |
| Households with a computer | 98.8%±1.4 pts | 97.4% |
| Households with a broadband subscription | 97.1%±2.9 pts | 98.0% |
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 3530.01?
Owners occupy 94.6% of Census Tract 3530.01's occupied homes and renters 5.4%. The median owner-occupied home is valued at $1,777,600 by its owner (±$152,250). The median renter pays $3,500 or more a month including utilities.
| Measure | Tract 3530.01 | Orinda |
|---|---|---|
| Median home value (owner-occupied) | $1,777,600±$152,250 | $1,863,200 |
| Median gross rent | $3,500 or more | $3,500 or more |
| Renters paying 35% or more of income on rent | 35.4%±27.0 pts | 35.8% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 94.6%±3.4 pts | 91.3% |
| Renter-occupied homes | 5.4%±3.4 pts | 8.7% |
| Housing units | 1,583±135 | 7,475 |
| Single-family detached homes | 95.1%±2.8 pts | 94.6% |
| Mobile homes | 0.0%±2.6 pts | 0.0% |
| Built 2020 or later | 2.5%±3.5 pts | 0.7% |
| Built 2010 to 2019 | 11.1%±4.7 pts | 3.7% |
| Built 1939 or earlier | 1.6%±1.7 pts | 5.0% |
| Households with no vehicle | 0.6%±0.9 pts | 4.2% |
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 3530.01 get to work?
46.6% of Census Tract 3530.01's workers drive alone and 36.3% work from home. The average trip to work takes 34.3 minutes.
| Measure | Tract 3530.01 | Orinda |
|---|---|---|
| In the labor force (age 16+) | 71.6%±5.4 pts | 60.7% |
| Unemployment rate | 3.9%±2.6 pts | 3.4% |
| Drove alone to work | 46.6%±8.0 pts | 43.3% |
| Carpooled | 3.2%±3.1 pts | 2.6% |
| Public transportation | 8.1%±3.2 pts | 12.2% |
| Walked | 0.0%±1.9 pts | 0.4% |
| Worked from home | 36.3%±6.3 pts | 39.3% |
| Mean travel time to work | 34.3 min±6.1 | 36.1 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 3530.01 compare with the other tracts in Contra Costa County?
Among Contra Costa County's tracts with a reliable estimate, Census Tract 3530.01 ranks as shown below (1 = highest).
| Measure | In Contra Costa County | In Orinda |
|---|---|---|
| Population | 123rd of 241 | 2nd of 4 |
| Residents per square mile | 215th of 241 | 3rd of 4 |
| Median household income | 1st of 239 | 1st of 4 |
| Per capita income | 12th of 241 | 3rd of 4 |
| Median home value | 22nd of 236 | 3rd of 4 |
| Median gross rent | 1st of 236 | 1st of 4 |
| Bachelor's degree or higher | 6th of 239 | 2nd of 4 |
| Median age | 113th of 241 | 4th of 4 |
| Owner-occupied share | 8th of 240 | 1st of 4 |
The tracts next to it on Contra Costa County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 3452.04 | 1st | $250,000 or more |
| Tract 3461.01 | 1st | $250,000 or more |
| Tract 3461.02 | 1st | $250,000 or more |
| Tract 3462.04 | 1st | $250,000 or more |
| Tract 3462.06 | 1st | $250,000 or more |
| Tract 3470 | 1st | $250,000 or more |
| Tract 3480 | 1st | $250,000 or more |
| Tract 3512 | 1st | $250,000 or more |
| Tract 3521.02 | 1st | $250,000 or more |
| Tract 3530.01 | 1st | $250,000 or more |
| Tract 3530.02 | 1st | $250,000 or more |
| Tract 3540.02 | 1st | $250,000 or more |
| Tract 3551.13 | 1st | $250,000 or more |
| Tract 3551.21 | 1st | $250,000 or more |
| Tract 3551.23 | 1st | $250,000 or more |
| Tract 3551.24 | 1st | $250,000 or more |
| Tract 3551.25 | 1st | $250,000 or more |
| Tract 3551.26 | 1st | $250,000 or more |
| Tract 3553.02 | 1st | $250,000 or more |
| Tract 3920 | 1st | $250,000 or more |
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 3530.01?
2 of the 18 figures for Census Tract 3530.01 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