820 area code
Where the 820 area code is, its overlay and how to dial a +1 820 number from anywhere.
The 820 area code is in California, United States (Pacific (PT)). To call from abroad: +1 820 555-0123. It is an overlay, so all 10 digits are dialled.
The 820 area code is a geographic North American Numbering Plan (NANP) code covering California. It has been in service since 25-May-2017 and sits in the Pacific (PT) time zone.
How to dial a 820 number
+1 820 555-01231 820 555-0123820 555-0123Other California area codes
Frequently asked questions
Where is the 820 area code?
The 820 area code is in California, United States (Pacific (PT)).
Is 820 an overlay area code?
Yes. 820 overlays the same region as 805, so callers dial all 10 digits.
Do I have to dial 10 digits for 820?
Yes — dial the area code plus the seven-digit number.
How do I call a 820 number from another country?
Dial your exit code (or +), then 1, then 820, then the number: +1 820 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 820 number does not pinpoint a street or ZIP code.
Number holders in area code 820
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 108 prefixes are in use in 820, shared by 24 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Fractel, LLC | 32 | 30% |
| New Cingular Wireless PCS, LLC | 16 | 15% |
| Onvoy, LLC | 11 | 10% |
| Multiple Ocn Listing | 9 | 8% |
| T-Mobile USA, Inc. | 8 | 7% |
| 5 | 5% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 820 numbers
- Reports to the FTC, last 30 days
- 89
- Recorded messages or robocalls
- 66%
- Rank among area codes
- #379 of 670
- Most reported subjects
- Other (30)
- Calls pretending to be government, businesses, or family and friends (27)
- Reducing your debt (credit cards, mortgage, student loans) (21)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 820 — cities & rate centres