Area code 820 covers Oxnard and surrounding communities in California.
Updated 8 October 2026
Area code 820 is in California, shown here with Oxnard marked.
Now in Oxnard
Pacific Time · UTC−8, UTC−7 in summer
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Typical business hours, 9 to 5 Monday to Friday.
Typical business hours, 9 to 5 Monday to Friday, shown as the blue arc. A guide to when a real Oxnard office is likely to answer. It says nothing about who called you.
Source: North American Numbering Plan Administrator, retrieved 8 October 2026.
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Is area code 820 a scam?
No. Area code 820 is a legitimate area code serving Oxnard since 2020. Scammers spoof caller ID to display 820 numbers, which is why complaints exist against a code that is itself genuine.
Neighbour spoofing is the reason a local-looking number is not a guarantee. A caller anywhere in the world can display a 820 number, and the number they display may belong to a real business in Oxnard that has nothing to do with the call.
The callerAnywhere in the worldSets the caller ID their equipment sends.
What is displayed(820) 300-3477May belong to a real Oxnard business.
Your phoneLooks localA nearby code and prefix make you likelier to answer.
96Area code 820 had 96 different numbers reported for spam calls in the 30 days to 8 October 2026.
323rdArea code 820 ranks 323rd of 331 US geographic area codes by spam complaint volume.
69%Of the 98 complaints about area code 820 in the 30 days to 8 October 2026, 69% were reported as a recorded message or robocall.
30%The most reported subject on area code 820 is reducing your debt (credit cards, mortgage, student loans), appearing in 30% of its complaints in the 30 days to 8 October 2026.
Why am I getting text messages from area code 820?
Texts from 820 numbers follow the same pattern as calls — mostly local businesses and services. Treat any text asking for payment or credentials as suspect regardless of the code.
The common patterns are a wrong-number opener that turns into conversation, an unsolicited job offer, and a crypto or investment tip. Do not reply, do not follow the link, and forward the message to 7726 (SPAM) to report it to your carrier.
Pattern 1Wrong-number openerTurns into conversation.
Pattern 2Unsolicited job offerDo not reply, do not follow the link.
Pattern 3Crypto or investment tipTreat any payment ask as suspect.
Report it7726Forward the message. It spells SPAM on a keypad.
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Area codes that overlay 820
Area code 820 shares its geographic footprint with one other code: 805. Overlays are laid over an existing area rather than splitting it, so all local calls require the full ten-digit number.
Oxnard is the largest city in Ventura County, with 202,063 residents at the 2020 census, and its economy starts in the dirt of the Oxnard Plain, some of the most productive farmland in California. Strawberries are the signature crop, with celery and lima beans in the rotation, and the growers, coolers, packers, and trucking firms that move that produce make agriculture the region's economic base. The city also works the water: the Port of Hueneme next door is the busiest commercial port between Los Angeles and the Bay Area, handling autos and bananas, Naval Base Ventura County is a major employer, and Channel Islands Harbor supports a marine trades and tourism economy.
Who lives in the 820 region
Oxnard is 77.1% Hispanic, and 34.2% of residents were born outside the country (DataUSA, 2024). Spanish is not a secondary language here so much as a parallel primary one, especially in agriculture, retail, and the trades, and there is an established Mixtec-speaking community among farmworker families that Spanish alone does not reach. A large Filipino community makes Tagalog the next most common language. Median household income was $96,212 in 2024, but the median home costs $652,700 (DataUSA, 2024), the familiar coastal California squeeze.
What an 820 number signals to a caller
Area code 820 has overlaid 805 since 2020, and the 805 is a regional brand across the Central Coast, printed on beer cans and surf stickers. A newer 820 number is just as local, though callers describe longtime residents as still identifying with 805 first. Business style leans casual and personal, coastal California with an agricultural work ethic underneath, and much of the ag economy is on the phone before dawn. An outside caller should know that Spanish-language capability is close to mandatory for consumer-facing work in Oxnard, California, and that harvest season compresses everyone's patience for long calls.
Area code 820 serves Oxnard and surrounding communities in California. It is in the Pacific Time zone.
What state is area code 820 in?
Area code 820 is in California. It is not in Burlington or Boise — those are area codes 802 and 208.
Is area code 820 toll free?
No. Area code 820 is a geographic area code serving Oxnard, California. The toll-free codes are 800, 833, 844, 855, 866, 877, 888, and a call to a 820 number is charged at your normal rate.
Why am I getting calls from 820?
Calls displaying a 820 number come from businesses and individuals in the Oxnard area, and from anywhere at all when caller ID is spoofed to look local. 96 820 numbers were reported to the FTC in the 30 days to 8 October 2026.
How do I block calls from area code 820?
Both iOS and Android can silence calls from unknown numbers, and every major US carrier offers free call-blocking. Blocking the whole of area code 820 is rarely worth it, because spoofed numbers change constantly and you would lose legitimate calls from Oxnard.