ZIP Code 94509 - Antioch California

ZIP Code 94509 is located in Antioch California. Portions of 94509 are also in Pittsburg and Oakley. 94509 is entirely within Contra Costa County. Regionally, it is located in the Metro Bay Area.

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ZIP Code 94509 Quick Stats

ZIP Code NameAntioch
Primary CountyContra Costa County
ZIP Code TypeStandard
Population (2022)70,889
Area Code(s)925
Current Time

ZIP Code 94509 Map

94509 Demographics

94509 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in California based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 94509 is Hispanic. The majority race/ethnicity attending public schools in 94509 is Hispanic. The current unemployment level in 94509 is 5.4%.

Population Growth Rate0.00%
Population Density3,513 People per Square Mile
Total Households20,595
Percentage High Income Households2.4%
Median Houshold Income (2021)$71,905
Average Adjusted Gross Income (2020)$55,290
Current Unemployment Rate (February 2024)5.4%
Majority Race/EthnictyHispanic - 37.47%
Public School Majority Race/EthnictyHispanic - 52.58%

94509 Race/Ethnicty Breakdown

Native American9861.26%
Hawaiian/Pac. Islander1,3461.72%

94509 Public School Race/Ethnicty Breakdown

Native American570.62%
Hawaiian/Pac. Islander1711.85%

94509 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College2,9529.05%
Bachelor Degree4,41413.52%
High School Diploma10,73832.9%
No High School Diploma9973.05%
GED or Alternate1,2533.84%
1 or More Years of College7,58623.24%
Associates Degree3,0949.48%
Masters Degree1,0233.13%
Professional Degree3511.08%
Doctorate Degree2280.7%

94509 Geography

Adjacent ZIP Codes
Cities/Towns in 94509
RegionMetro Bay Area
Metropolitan/Micropolitan Stat AreaSan Francisco-Oakland-Berkeley, CA
Time ZonePacific Standard Time
IANA TimezoneAmerica/Los_Angeles
Area20 Square Miles

94509 Politics

US Congressional Districts in 94509
California State Senate Districts in 94509
California State Assembly Districts in 94509

94509 Weather and Climate Data

Plant Hardiness ZoneZone 9b: 25F to 30F
Average First Frost DateNovember 21 - 31
Average Last Frost DateMarch 1 - 10
Koppen-Geiger Climate ZoneCsb - Warm-Summer Mediterranean Climate

94509 Annual Climate Data

Avg Min Temp (°F)38424447525758595752443849
Avg Max Temp (°F)54606571778488888577645472
Avg Precip (In.)2.952.692.

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