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820 Area Code 🌍☎️

The 820 Area Code is located in the state of California. Area Code 820 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 609,997 unique phone numbers and 1,217,535 individuals near Oxnard, Camarillo, and Newbury Park.

Cities located in the 820 Area Code

The most populous cities in area code 820 are: Oxnard, Camarillo, Newbury Park, Atascadero, and Thousand Oaks.
Other cities in the 820 area code include: Ventura, San Luis Obispo, Fillmore, Buellton, Simi Valley, Santa Maria, Arroyo Grande, Guadalupe, Santa Barbara, Lompoc, Paso Robles, Santa Paula, Oak View, Santa Ynez, Cayucos, San Miguel, San Ardo, and Pismo Beach.

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About Oxnard, Camarillo, and Newbury Park, California

Oxnard / ˈ ɒ k s n ɑːr d / is a city in the United States, located along the coast of Southern California. It is the 19th most populous city in California and the most populous in Ventura County. The city lies approximately 30 miles west of the Los Angeles city limits, and is part of the larger Greater Los Angeles area. The population of Oxnard is 203,585 as of the 2012 Financial Report. Oxnard is the most populous city in the Oxnard-Thousand Oaks-Ventura, CA Metropolitan Statistical Area, which is listed as one of the wealthiest areas in America, with its residents making well above the average national income. Oxnard was incorporated in 1903. It is located at the western edge of the fertile Oxnard Plain, sitting adjacent to an agricultural center of strawberries and lima beans. Oxnard is also a major transportation hub in Southern California, with Amtrak, Union Pacific, Metrolink, Greyhound, and Intercalifornia stopping in Oxnard. Oxnard also has a small regional airport called Oxnard Airport (OXR). Oxnard is also the location of the National Weather Service forecast office that serves the Los Angeles area. Camarillo is a city in Ventura County in the U.S. state of California. The population was 65,201 at the 2010 census, up from 57,084 at the 2000 census. The Ventura Freeway (U.S. Route 101) is the city's primary thoroughfare. Camarillo is named for Adolfo and Juan Camarillo, two of the few Californios (pre-1848 California natives of Hispanic ancestry) to preserve the city's heritage after the arrival of Anglo settlers. The railroad coast route came through in 1898 and built a station here. Adolfo Camarillo eventually employed 700 workers growing mainly lima beans. Walnuts and citrus were also grown on the ranch. Adolfo bred Camarillo White Horses in the 1920s through the 1960s and was well known for riding them, dressed in colorful Spanish attire, in parades such as the Fiesta of Santa Barbara.The city grew slowly prior to World War II but the war effort saw the construction of the Oxnard Army Air Field (later Oxnard Air Force Base in 1951, now Camarillo Airport) to the west of town. The community also grew as the new base along with nearby Naval Air Station Point Mugu and a Seabee base at Port Hueneme brought many workers and their families to the area. The grounds of Camarillo State Hospital, which opened in 1936 south of town, are now the campus of California State University, Channel Islands.As with most cities in Ventura County, it is noted for its resistance to new development. In 2014, the council voted against an 895-acre project that would have extended development on agricultural lands east towards the Conejo Grade. Newbury Park is a town located mostly within the western Thousand Oaks city limits in Ventura County, California, United States. The unincorporated county island of Casa Conejo is part of Newbury Park and bounded on all sides by the city of Thousand Oaks. Lying within the Conejo Valley in the northwestern part of the Greater Los Angeles Area, Newbury Park abuts the Santa Monica Mountains National Recreation Area. The community is located approximately 35 miles (56 km) from Downtown Los Angeles and is less than 7 mi (11 km) from the Los Angeles County border in Westlake Village. The closest coastal city is Malibu, 22 mi (35 km) from Newbury Park, which may be reached through winding roads or hiking trails crossing the Santa Monica Mountains. The ZIP code is 91320, and the community is inside area code 805. About 28,000 of Thousand Oaks' 110,000 residents reside in Newbury Park. Newbury Park, along with Thousand Oaks proper, have numerous times ranked among the safest and also wealthiest communities in the United States. Money Magazine has ranked Newbury Park as one of the most affluent cities in the United States. It has the 11th highest per-capita income and the fourth-highest median household income in the country. As of 2013, the median household income in Newbury Park is $107,302, compared to $60,190 for California as a whole and $53,046 nationwide.

What Time Zone is Area Code 820?

The 820 area code lies within the Pacific Daylight Time Zone (or PDT). The current time in Pacific Daylight Time is 6:59 AM on May 1, 2025.

Neighborhood Demographics

Statistic based on US Census data for Oxnard
38 y/o
Median Age
$74.8K
Median Income
$547K
Median Home Value
1.22M
Total Population

Area Codes near Oxnard, Camarillo, Newbury Park, California.

6,337,172 phone numbers
7,836,357 phone numbers
7,855,028 phone numbers

Other Area Codes

Phone Number Prefixes in the 820 Area Code

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Thousand Oaks, CA
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Shelltel
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Oxnard, CA
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San Luis Obispo, CA
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Camarillo, CA
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Atascadero, CA
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Buellton, CA
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Newbury Park, CA
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Newbury Park, CA
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Lompoc, CA
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Fillmore, CA
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Camarillo, CA
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Oxnard, CA
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Buellton, CA
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Camarillo, CA
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Guadalupe, CA
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Thousand Oaks, CA
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Oxnard, CA
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Arroyo Grande, CA
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San Luis Obispo, CA
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San Miguel, CA
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Camarillo, CA
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Newbury Park, CA
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Buellton, CA
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