820 area code: location, overlays and numbers
In Oxnard, California, area code 820 has served as a US telephone area code since 2018, sharing an overlay with 805.
- Location
- Oxnard, California
- In service from
- 2018
- Time zone used
- Pacific time zone
- Overlay
- 805
- Local calling
- Dialling format: 1 + 10-digit
- Rate centre list
- 40
- Expected exhaust
- 2074
- The country code
- +1 (United States)
Sources are NANPA public reports: the area code report and the rate-centre report. The file is dated 11/01/2026, and for the exhaust year see NANPA projections 2026-1 (April 2026). We are not an official NANPA site.
Get your own 820 number
Two ways lead to a 820 number. When you sign up for a provider's plan, it gives you a new number, chosen from the pool it holds in the code. Sellers post numbers they already hold, often ones with a pattern, at a one-time price. You then carry the number over to a provider.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers that list local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. That never changes the ranking, which follows first-year cost. How we earn money
Places in the 820 area code
For 820, NANPA lists 40 rate centres. Each one is a local calling area where numbers get assigned:
Arroyo Grande, Bradley, Cambria, Carrisa Plains, Conejo, Fillmore, Guadalupe, Los Alamos, Morro Bay, Nipomo, Ojai, Parkfield, Pismo Beach, Santa Barbara, Santa Ynez, Santa Paula, Simi Valley, Somis, Ventura Central, Atascadero, Camarillo, Carpinteria, Cayucos, El Rio, Gaviota, Lompoc, Moorpark, Newbury Park, Oak View, Oxnard, Paso Robles, Piru, Point Mugu, San Miguel, Santa Margarita, Santa Maria, Saticoy, San Luis Obispo, Thousand Oaks, Ventura East.
Other related area codes
The same area and the same pool of numbers: 805. Any of these codes can supply a new number in this area, so ask for the one you want.
California area codes other than this one include 213, 415, 916, 714, 209, 408, 707, 619, 818, 510, 310. Also California codes: 909, 562, 760, 626, 650, 530, 925, 949, 323, 831, 559, 661, 858, 951, 424, 657, 747, 442, 669, 628, 279, 341, 840, 350, 369, 738, 837 and 357.
820 area code questions
Where is area code 820?
The 820 code serves Oxnard, California, and the area around Oxnard-Thousand Oaks-Ventura, CA.
What country code goes with a 820 number?
+1. Since 820 belongs to the North American Numbering Plan, calling from abroad means dialing +1 820 plus the 7-digit number.
What time is it in the 820 area code?
The 820 area code stays on Pacific time.
Who places calls from a 820 number?
Homes, mobiles and local businesses hold numbers in this code, and so do people who fake a local number. What a 820 number shows on your screen is where that number was assigned, rather than who is calling.