Area Code 657

California

Area code 657 serves California, primarily Anaheim, in the Pacific Time (PT) time zone. It is an overlay area code sharing territory with area code 714.

Overlay Area Code

This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.

This area code shares its geographic region with: area code 714 (Anaheim).

In service since: 23-Sep-2008

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 1,564,824
Population Density: 2,538 people/sq mi
above U.S. average (U.S.: 93 people/sq mi)
Median Household Income: $87,760
above U.S. median (U.S.: $75,144)
Poverty Rate: 13.1%
above U.S. average (U.S.: 11.5%)
Unemployment Rate: 6.8%
above U.S. average (U.S.: 3.6%)
Education Attainment: Bachelor's Degree+
36.4%
near U.S. average (U.S.: 33.7%)
High School or Lower
31.1%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the Statistics dashboard.

Time Zone

Pacific Time (PT)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), area code 657 is currently relief planning in progress.

Planning letters: PL-368, PL-206, PL-169

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Pacific Time (PT)

Prefix Utilization

Geographic Coverage

State

Major Cities

Anaheim
Santa Ana
Irvine
Huntington Beach
Garden Grove
Fullerton
Orange
Costa Mesa
Westminster
Buena Park
Tustin
Chino Hills
Yorba Linda
La Habra
Fountain Valley
Placentia
Cypress
Brea
La Mirada
Stanton
North Tustin
La Palma
Los Alamitos
Villa Park

and 4 more cities

Area Code 657 geographic coverage map (light mode)

Demographics

The estimated population served by area code 657 is approximately 1,564,824. The population density is 2,538 people per square mile, which is higher than the national average of 93. The median household income is $87,760, which is higher than the national median of $75,144. Approximately 36.4% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is near the national average. The poverty rate stands at 13.1%, which is higher than the national rate of 11.5%.

History

Area code 657 serves as an overlay for the same territory as area code 714. It was introduced in 2008 to provide additional phone number capacity for the region. It shares its territory with area code area code 714.