What is the main zip code for Fullerton, California?

92833 is the most populous Fullerton ZIP code in Census data with about 52,799 residents.

What is the area code for Fullerton, California?

Fullerton, California uses area code 714.

What time zone is Fullerton, California in?

Fullerton, California is in the Pacific Time Zone.

Fullerton, California Zip Codes

Q: How many zip codes does Fullerton, California have?

Fullerton, California has 8 zip codes in this directory: 4 standard delivery ZIPs and 4 PO Box or unique ZIPs.

Q: What county is Fullerton, California in?

Fullerton is in Orange County, California.

📍 Fullerton is in Orange County, California with 8 zip codes; the most populous is 92833.

City

Fullerton

County

Orange

Zip Codes

Area Code

714

Fullerton is a USPS city name in Orange County, California with a Census population of approximately 141,996 across its ZIP codes. Orange County as a whole has 148 ZIP codes in this directory. Below you'll find every zip code serving Fullerton with population, income and home value, a map, and the city's affordability profile.

Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).

All Fullerton Zip Codes

ZIP Code	City	County	Population	Median Income	Median Home	Details
92831	Fullerton	Orange	36,470	$85,220	$746,800	View →
92832	Fullerton	Orange	26,040	$89,722	$690,200	View →
92833	Fullerton	Orange	52,799	$107,241	$757,000	View →
92834	Fullerton	PO Box ZIP	—	—	—	View →
92835	Fullerton	Orange	26,687	$131,385	$937,500	View →
92836	Fullerton	PO Box ZIP	—	—	—	View →
92837	Fullerton	PO Box ZIP	—	—	—	View →
92838	Fullerton	PO Box ZIP	—	—	—	View →

Fullerton at a Glance

Residents (ZIPs with data)

141,996

Median household income

$98,482

Median home value

$751,900

Price-to-income ratio

7.4

Median rent

$1,981

Owner-occupied

49%

Bachelor's degree+

44%

Poverty rate

12.8%

Fullerton has 8 ZIP codes in this directory: 4 standard delivery ZIPs and 4 PO Box or unique ZIPs that carry no resident population in Census data. The 4 ZIPs with published Census housing data cover 141,996 residents, the largest being 92833 with 52,799 people.

The median ZIP in Fullerton has a household income of $98,482 and a home value of $751,900, a price-to-income ratio of 7.4, above the 6.7 California ZIP median. Affordability ranges from 92833 at a ratio of 7.1 to 92835, where the median home is $937,500. The highest median income is in 92835 at $131,385. Median rent across these ZIPs is $1,981 a month.

49% of households in the typical Fullerton ZIP own their home (statewide ZIP median 64%). 44% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 12.8%, above the 10.8% statewide ZIP median. Overall density is about 6,396 residents per square mile across 22 square miles of ZIP land area.

Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.