🇺🇸 United States ZIP Code

STANDARD

92831

Fullerton

ZIP Code 92831 is a standard zip code serving Fullerton, Fullerton, California (CA), in Orange County, United States. It has an estimated population of 34,204 with a median household income of $61,216. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Orange
City: Fullerton
Timezone: America/Los_Angeles

Coordinates

Latitude: 33.887300
Longitude: -117.894600

Geographic Details

Land Area: 5.98 mi²
Population Density: 5724.0 people per mi² (95th percentile)
Bounding Box: 33.899570°N, 33.854335°S, -117.865440°E, -117.924447°W

With 34,204 residents spread across 5.98 square miles, this area has a population density of 5724.0 people per square mile.

Demographics

34,204

Population

90th percentile

$61,216

Median Income

75th percentile

$465,900

Median Home Value

95th percentile

5.98 mi²

Land Area

The median household income in 92831 is $61,216, and the median home value is $465,900. This places the area in the top 25% nationally for household income.

Housing

13,409

Total Units

12,515

Occupied Units

93.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Fullerton, CA.

92832

Fullerton

92833

Fullerton

92834

Fullerton

92835

Fullerton

92836

Fullerton

92837

Fullerton

92838

Fullerton

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

94709

Berkeley

$57,433

93527

Inyokern

$52,170

95937

Dunnigan

$56,705

91790

West Covina

$66,402

91104

Pasadena

$67,068

92056

Oceanside

$64,033

91730

Rancho Cucamonga

$62,856

94501

Alameda

$69,076

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.