Camarillo, California

Where Is Area Code 820?

Area code 820 is in California. It serves Camarillo and other parts of Ventura County on the Southern California coast.

The 820 area code is an overlay on the same region as area code 805. That service area includes cities and communities such as Camarillo, Ventura, Oxnard, Santa Barbara, San Luis Obispo, Santa Maria, and Thousand Oaks. It also covers parts of Santa Barbara County and San Luis Obispo County.

This region includes the Pacific coast, the Santa Clara River Valley, and the Oxnard Plain. Notable places in the broader 805 and 820 service area include Channel Islands Harbor, Point Mugu State Park, and California Polytechnic State University in San Luis Obispo.

History of Area Code 820

Area code 820 was established as an overlay for area code 805. The California Public Utilities Commission approved the new code after forecasts showed that the 805 area code would run out of available phone numbers.

The 820 overlay took effect on June 14, 2024. Because 820 is an overlay, it did not replace 805 or split the region into separate geographic sections. Customers in the area must use 10-digit dialing for local calls.

Key Facts About Area Code 820

• Area code 820 is in California and serves Camarillo within the same numbering region as area code 805.
• Area code 820 is an overlay, not an original area code and not a geographic split.
• Area code 820 began service on June 14, 2024, after approval by the California Public Utilities Commission.
• Area code 820 serves parts of Ventura County, Santa Barbara County, and San Luis Obispo County.
• Area code 820 is in the Pacific Time Zone.
• Area code 820 shares service territory with cities such as Camarillo, Ventura, Oxnard, Santa Barbara, Santa Maria, San Luis Obispo, and Thousand Oaks.
• The 820 and 805 region includes California Polytechnic State University in San Luis Obispo and coastal landmarks such as Channel Islands Harbor.
• Ten-digit dialing is required in the 820 overlay area because it shares territory with area code 805.

Frequently Asked Questions

What state is area code 820 in?

Area code 820 is in California.

What major cities use area code 820?

Area code 820 serves Camarillo and the broader 805 overlay region, including Ventura, Oxnard, Santa Barbara, Santa Maria, San Luis Obispo, and Thousand Oaks.

Is area code 820 a toll-free number?

No. Area code 820 is a geographic area code in California.