| City: | Antioch, California |
| County: | Contra Costa County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 8:53:44 PM |
| Population: | 69,931 [See All] |
| Area Code: | 925 |
| Classification: | Standard [Normal Street Delivery] |
| Coordinates: | 37.9898, -121.8073 |
| Land Area: | 17.445 sq mi |
| Quick Link: |
ZIP Code 94509 has 69,931 residents and 22,510 households (average 3.09 persons per household). The median age is 35.7 years, slightly younger than the state (37.5) and younger than the nation (38.8). The gender split is 48.7% male and 51.3% female, which is about the same as the state male share (49.4%), making this a female-majority area. Largest groups are Hispanic or Latino (41.2%) and White (31.6%, much lower than the state average of 41.2% and well below the national average of 61.6%); Hispanic or Latino residents make up 41.2%, which is much higher than the national average (18.7%), and Black or African American share is much higher than the state average (5.7%) and Other / Two or More Races share is much higher than the national average (8.4%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 69,931Source: Census DHC |
| 2023 ACS Population Estimate: | 71,013Source: Census ACS |
| 2025 ZC Population Estimate: | 72,123Source: ZIP-Codes.com |
| Population Density: | 4,008.7 people per sq mile |
| Average Income: | $81,512Source: Census ACS |
| Households: | 22,510Source: Census DHC |
| Average House Value: | $565,300Source: Census ACS |
| Persons Per Household: | 3.09Source: Census DHC |
| Average Family Size: | 3.44Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 61,266 | 61,665 | 62,651 | 63,351 | 64,406 | 64,412 | 66,741 | 66,933 | 68,166 | 69,295 | 71,669 | 70,889 | 71,013 |
| Decennial Census | 62,439 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 69,931 | -- | -- | -- |
Median Age: 35.7
Male Median Age: 34.8
Female Median Age: 36.7
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 2,187 | 2,494 | 2,634 | 2,530 | 2,329 | 2,475 | 2,501 | 2,366 | 2,145 | 1,990 | 2,101 | 2,146 | 1,999 | 1,579 | 1,111 | 712 | 427 | 363 |
| Female | 2,252 | 2,393 | 2,573 | 2,384 | 2,278 | 2,488 | 2,678 | 2,481 | 2,222 | 2,123 | 2,185 | 2,351 | 2,172 | 1,719 | 1,412 | 873 | 588 | 670 |
| Total | 4,439 | 4,887 | 5,207 | 4,914 | 4,607 | 4,963 | 5,179 | 4,847 | 4,367 | 4,113 | 4,286 | 4,497 | 4,171 | 3,298 | 2,523 | 1,585 | 1,015 | 1,033 |
| White: | 22,079 | 24.82% |
| Black: | 12,970 | 14.58% |
| Hispanic:* | 28,840 | 32.42% |
| Asian: | 5,961 | 6.70% |
| American Indian: | 1,224 | 1.38% |
| Hawaiian: | 958 | 1.08% |
| Other: | 16,912 | 19.01% |
| Total: | 88,944 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 34,089 | 48.75% | 34.8 years |
| Females: | 35,842 | 51.25% | 36.7 years |
| Total: | 69,931 | 100% | 35.7 years |
| Native, born in the United States: | 53,162 | 74.86% |
| Native, born in PR, Island Areas, or abroad: | 1,323 | 1.86% |
| Foreign born, naturalized U.S. citizen: | 8,462 | 11.92% |
| Foreign born, not a U.S. citizen: | 8,066 | 23.27% |
| Total Population: | 71,013 | 100% |
| Total Native Population: | 54,485 | 76.73% |
| Total Foreign-born Population: | 16,528 | 23.27% |
In 2023, the Median household income is $81,512, which is much lower than the state median ($96,334), is up $26,494 (48.2%) since 2011 and above its 2019 pre-pandemic level by $17,010. Family households earn a median of $90,026 versus $46,667 for nonfamily households (a difference of $43,359). By gender, male median income is $64,625 and female is $57,840, which is far above the national female median ($53,445), with a current gap of $6,785 that has narrowed from 2011 to 2023. The labor-force participation rate is 64.2%, which is on par with the national rate (63.5%). The unemployment rate is 8.1%, which is markedly higher than the national rate (5.2%). The largest occupation group is Management (31.2%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $55,018 | $54,441 | $53,953 | $54,372 | $53,998 | $55,022 | $58,823 | $60,821 | $64,502 | $68,224 | $71,905 | $78,637 | $81,512 |
| Median Family Income | $59,313 | $59,736 | $60,581 | $61,299 | $59,399 | $60,617 | $62,628 | $65,733 | $68,773 | $73,257 | $75,981 | $85,625 | $90,026 |
| Median NonFamily Income | $38,618 | $33,144 | $30,618 | $31,377 | $32,964 | $33,702 | $41,137 | $44,820 | $46,002 | $52,904 | $54,660 | $47,155 | $46,667 |
| Median Male Income | $48,287 | $49,911 | $49,909 | $49,546 | $50,265 | $50,525 | $48,906 | $49,451 | $51,155 | $48,777 | $51,588 | $60,144 | $64,625 |
| Median Female Income | $37,125 | $38,435 | $38,702 | $39,369 | $41,504 | $41,213 | $42,202 | $43,204 | $44,889 | $45,703 | $48,005 | $50,843 | $57,840 |
| Employed: | 33,351 | 59.01% |
| Unemployed: | 2,932 | 5.19% |
| Not In Labor Force: | 20,239 | 35.81% |
| Total: | 56,522 | 100% |
| Management, business, science, and arts: | 10,394 | 31.17% |
| Service: | 8,360 | 25.07% |
| Sales and Office: | 7,025 | 21.06% |
| Natural resources, construction, and maintenance: | 3,772 | 11.31% |
| Production, transportation, and material moving: | 3,800 | 11.39% |
| Total Civilian Employed Population: | 33,351 | 100% |
In 2023, the median home value is $565,300, which is much higher than the national median ($303,400), is up $302,800 (115.35%) since 2011 and above its 2019 pre-pandemic level by $196,100. The median gross rent is $2,052, which is far above the national median ($1,348), is up $898 (77.82%) since 2011 and above its 2019 pre-pandemic level by $400. Of occupied housing, owners make up 58.32% (71.81% with a mortgage, 28.19% free-and-clear) and renters 41.68% - making this ZIP Code more home ownership than the state and higher than national rental averages. The vacancy rate is 2.57%, which is much lower than the national rate (10.43%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $262,500 | $219,100 | $203,300 | $211,800 | $231,200 | $262,500 | $305,100 | $340,000 | $369,200 | $399,200 | $435,600 | $516,200 | $565,300 |
| Less than $500: | 713 | 7.30% |
| $500 to $999: | 540 | 5.53% |
| $1,000 to $1,499: | 1,046 | 10.71% |
| $1,500 to $1,999: | 2,142 | 21.94% |
| $2,000 to $2,499: | 2,777 | 28.44% |
| $2,500 to $2,999: | 1,374 | 14.07% |
| $3,000 or more: | 873 | 8.94% |
| No Rent: | 300 | 3.07% |
| Total: | 9,765 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $1,154 | $1,150 | $1,180 | $1,211 | $1,204 | $1,234 | $1,352 | $1,498 | $1,652 | $1,756 | $1,834 | $2,011 | $2,052 |
| Owner Occupied (with mortgage): | 9,813 | 41.88% |
| Owner Occupied (free and clear, no mortgage): | 3,853 | 16.44% |
| Renter Occupied: | 9,765 | 41.68% |
| Total Occupied Housing Units: | 23,431 | 100% |
| Occupied Housing Units: | 23,431 | 97.43% |
| Vacant Housing Units (not graphed): | 617 | 2.57% |
| Total Housing Units: | 24,048 | 100% |
| Single-Family Units: | 18,911 | 78.64% |
| Multi-Family Units: | 4,745 | 19.73% |
| Other Units: | 392 | 1.63% |
| Total Housing Units: | 24,048 | 100% |
In 2023, 18.90% of adults (25+) have a bachelor's degree or higher, which is markedly below the state rate (36.50%). High school or higher is 82.40%, which is far lower than the national rate (89.40%). The uninsured rate is 8.30%, which is on par with the state rate (6.90%). The share of people in poverty is 11.00%, which is notably higher than the state rate (8.40%), down 2.20 percentage points since 2011 and below its 2019 pre-pandemic level by 4.70 percentage points. This suggests a positive shift in the local economic and social landscape - higher incomes, steadier consumer demand, and a strengthening tax base. Among residents ages 3+, the largest enrollment group is elementary (42.95%). College enrollment is 22.93%, which is markedly below the state rate (30.00%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 4,442 | 9.29% |
| 9th to 12th grade, no diploma: | 3,984 | 8.34% |
| High school graduate (includes equivalency): | 14,590 | 30.53% |
| Some college, no degree: | 11,800 | 24.69% |
| Associate's degree: | 3,933 | 8.23% |
| Bachelor's degree: | 6,760 | 14.14% |
| Graduate or professional degree: | 2,283 | 4.78% |
| Total: | 47,792 | 100% |
| High school or higher: | 39,366 | 82.37% |
| Bachelor's degree or higher: | 9,043 | 18.92% |
| Private Insurance: | 43,451 | 54.71% |
| Public Insurance: | 30,084 | 37.88% |
| No Insurance: | 5,887 | 7.41% |
| Total: | 79,422 | 100% |
| Has Health Insurance: | 73,535 | 92.59% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 13.2% | 14.3% | 13.5% | 12.7% | 15.4% | 14.2% | 15.4% | 15.5% | 15.7% | 13.1% | 13.0% | 11.9% | 11.0% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 822 | 4.76% |
| Kindergarten: | 927 | 5.37% |
| Elementary school (grades 1-8): | 7,412 | 42.95% |
| High school (grades 9-12): | 4,138 | 23.98% |
| College or graduate school: | 3,957 | 22.93% |
| Total: | 17,256 | 100% |
| Early Childhood: | 1,749 | 10.14% |
| K-12 (Primary & Secondary School): | 12,477 | 72.31% |
ZIP Code 94509 supports both business and residential activity. According to the Business Census (2023), there are 979 business establishments, employing about 12,352 people with an annual payroll of $756,442,000. USPS data shows 23,341 residential mailboxes and 1,425 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 23,341Source: USPS |
| # Business Mailboxes: | 1,425Source: USPS |
| Total Delivery Receptacles: | 24,951Source: USPS |
| Single Family Delivery Units: | 17,049Source: USPS |
| Multi Family Delivery Units: | 4,925Source: USPS |
| # of Businesses: | 979Source: CBP |
| 1st Quarter Payroll: | $179,791,000Source: CBP |
| Annual Payroll: | $756,442,000Source: CBP |
| # of Employees: | 12,352Source: CBP |
ZIP Code 94509 is located in Contra Costa County, California, within the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area (CBSA 41860) and California's 8th and 10th Congressional Districts. This Metro area has a population of 4,653,593 people, about 1.50% of whom live in ZIP Code 94509, and is subdivided into the Oakland-Fremont-Berkeley, CA division. It covers 17.445 sq mi of land and a water area of 0.225 sq mi.
| CBSA Name: | San Francisco-Oakland-Fremont, CASource: Census |
| CBSA Number: | 41860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Oakland-Fremont-Berkeley, CA (CBSA Div 36084)Source: Census |
| CBSA Population: | 4,653,593Source: Census |
| MSA: | San Francisco-Oakland-San Jose, CA CMSASource: Census |
| Land Area: | 17.445 sq miSource: Census |
| Water Area: | 0.225 sq miSource: Census |
| Congressional District: | 08,10Source: USPS |
| Congressional Land Area: | 32867.21, 1818.79 sq miSource: Census |
| PMSA: | Oakland, CA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0602252Source: Census |
| Place Name: | Antioch city; CaliforniaSource: Census |
ZIP Code 94509 is in the Antioch Unified School District, which serves grades Kindergarten thru 12th. There are 18 public schools and 4 private school(s) in this ZIP Code. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on November 1, 2025.