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ZIP Code 94509

Antioch, California, United States

Standard ZIP Pacific Time (PT)
70,090
Population
1,551.4
Per sq mile
Contra Costa
County

About ZIP Code 94509

ZIP code 94509 is assigned to Antioch, Contra Costa County, California, United States. It falls in the Pacific Time (PT) zone. The estimated population of this ZIP code area is 70,090 with a density of 1,551.4 people per square mile.

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Location Details

ZIP Code94509
CityAntioch
CountyContra Costa County
StateCalifornia
CountryUnited States
TimezonePacific Time (PT)
Timezone IDAmerica/Los_Angeles
Latitude37.9921
Longitude-121.8142
ZIP TypeStandard ZIP

Post Office

Address2730 W TREGALLAS RD
CityANTIOCH
StateCA

Nearby ZIP Codes in California

94531
Antioch
94561
Oakley
94565
Pittsburg
94512
Birds Landing
94517
Clayton
94548
Knightsen

Frequently Asked Questions

What city is ZIP code 94509 in?

ZIP code 94509 is in Antioch, Contra Costa County, California, United States.

What county is ZIP code 94509 in?

ZIP code 94509 is in Contra Costa County, California.

What timezone is ZIP code 94509 in?

ZIP code 94509 is in the Pacific Time (PT) zone (America/Los_Angeles).

What is the population of ZIP code 94509?

The estimated population of ZIP code 94509 is 70,090 people with a density of 1,551.4 people per square mile.

What state is ZIP code 94509 in?

ZIP code 94509 is in California (CA), United States.

📋 Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.