What is the largest city in Orange County, CA?

Anaheim is the largest city or town in Orange County, with about 344,521 residents.

How many ZIP codes are in Orange County?

Orange County includes 88 ZIP Code Tabulation Areas, including 90620, 90621, 90623, 90630, 90631.

What is the population of Orange County, CA?

About 3,165,820 people live in Orange County, based on American Community Survey 5-year estimates.

What counties border Orange County?

Orange County borders Los Angeles County, San Diego County, Riverside County, San Bernardino County.

Orange County, CA: Cities, ZIP Codes & Local Data

Population

3,165,820

Land area

793sq mi

People per sq mi

3,993

ZIP codes

88

Orange County at a glance

Orange County is about 16 times as dense as California as a whole.
By population, it ranks 3rd among 58 counties in California.
The median household income is $116,289, 17% above the California median of $99,122.
A typical owner-occupied home is valued at $962,600 (31% above California) and median rent is $2,434 a month.
Its largest cities are Anaheim (344,521), Santa Ana (312,534) and Irvine (311,690).

Local data for Orange County, CA

Counts from official public data

Housing and community stats

Orange County, CA, American Community Survey 2020-2024

Full profile

Median household income

$116,289

Poverty rate

9.5%

Median home value

$962,600

Prices +3.3% in a year

Median rent

$2,434/mo

Homeownership

56.4%

Bachelor's or higher

44.1%

Median age

39.4

Average commute

26.7 min

Largest reported origins and ancestries: Mexican Americans (897,450), German Americans (235,950), Vietnamese Americans (226,850).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.4%

Aug 2026, -0.2 pts in a year

Average annual pay

$84,864

1,663,220 jobs, 2025

Income per person

$94,034

BEA, 2024

Federal spending

$25.2B

FY 2026, $7,922 per person

PPP loans

$11.5B

121,422 loans, 1,263,771 jobs reported

Campaign donations

$37.4M

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Orange County, CA, workers 16 and older. American Community Survey 5-year estimates

Drove alone67.5%
Carpooled8.9%
Public transit1.2%
Walked1.7%
Bicycle0.6%
Taxi, ride-hailing, motorcycle or other1.6%
Worked from home18.5%

Average one-way commute: 26.7 minutes for people who do not work from home.

Environment and hazard risk

Orange County, CA, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very High

Top: earthquake

Storm events since 1996

905

Most often high wind

Flood insurance policies

7,994

1.0% of homes, county

July high / Jan low

85° / 43°F

14.1 inches of rain a year

Hazards, floods and storm history Check a flood zone 107 historic places

Health statistics

Share of adults in Orange County, CA, CDC PLACES estimates

All 40 measures

Obesity

23.9%

U.S. 33.3% -9.4 pts

Diabetes

11.5%

U.S. 12.1% -0.6 pts

Smoking

9.2%

U.S. 12.8% -3.6 pts

Uninsured (18-64)

8.9%

U.S. 11.1% -2.2 pts

Cities, towns and ZIP codes in Orange County

Population shown

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Frequently asked questions

What is the largest city in Orange County, CA?: Anaheim is the largest city or town in Orange County, with about 344,521 residents.
How many ZIP codes are in Orange County?: Orange County includes 88 ZIP Code Tabulation Areas, including 90620, 90621, 90623, 90630, 90631.
What is the population of Orange County, CA?: About 3,165,820 people live in Orange County, based on American Community Survey 5-year estimates.
What counties border Orange County?: Orange County borders Los Angeles County, San Diego County, Riverside County, San Bernardino County.