Area Code 818

California

Area code 818 serves California, primarily Los Angeles, in the Pacific Time (PT) time zone. It has served the region since 07-Jan-1984.

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 747 (Los Angeles).

In service since: 07-Jan-1984

Learn more about overlay and split area codes →

Area Code Splits

Parts of this area code’s original geographic region were later assigned new area codes through splits. When a split occurs, some customers in the original area code region are assigned the new area code.

Split into: area code 626 (Pasadena).

Learn more about overlay and split area codes →

Demographics & Economics

Demographic Data Unavailable for Area Code 818

County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.

Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.

Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.

Time Zone

Pacific Time (PT)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

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

Current Time

Pacific Time (PT)

Prefix Utilization

Geographic Coverage

State

Major Cities

Los Angeles
Glendale
Pasadena
Burbank
San Fernando
Calabasas
La Cañada Flintridge
La Crescenta-Montrose
Agoura Hills
Oak Park
Topanga
Hidden Hills
Bell Canyon
La CaÃ±ada Flintridge
North Glendale
Westlake

Area Code 818 geographic coverage map (light mode)

History

Area code 818 was established in 1984 as a geographic area code. Over time, area code area code 626 was split from 818. It shares its territory with area code area code 747.

Demographics

Detailed demographic and economic data is not yet available for area code 818.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 818).

County	Population	Share
Los Angeles, CA	1,883,782	93.4%
Ventura, CA	133,830	6.6%

Area Code 818 Family Tree

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Total Codes

Splits

Overlays

Max Depth

All Descendants

Code ▲	State	Type	In Service	Parent
626	CA	split	14-Jun-1997	818
747	CA	overlay	18-May-2009	818

Area code 818 was originally assigned in 07-Jan-1984 to serve CA. Over the years, it has generated 2 descendant area codes through a combination of geographic splits and overlays as demand for telephone numbers grew.