Area codes · +1
Area code 820
Area code 820 is centred on Camarillo, California. We hold 904 allocated blocks for it across 31 rate centres, split 51% mobile, 1% landline and 48% VoIP.
The other area codes laid over 820
Area code 820 does not have Camarillo to itself. 1 other code — 805 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
8055,938 blocks, 41 rate centres, mostly landline
Each holds its own blocks and its own carrier mix, so a 820 number and a 805 number from the same street can report different line types. Filtering Camarillo by area code needs all 2 of them.
820 is not confined to Camarillo itself: its blocks sit across 31 rate centres, named in the table below.
California is split across 40 area codes — 657, 707, 559, 209, 530, 820 and others. By allocated blocks 820 is the 36th largest of them, holding 1% of the California total.
Where 820 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Vntra Cntl is shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 820 |
|---|---|---|
| Camarillo | 112 | 12% |
| Atascadero | 85 | 9% |
| Newburyprk | 82 | 9% |
| Sanbarbara | 81 | 9% |
| Oxnard | 77 | 9% |
| Santamaria | 61 | 7% |
| Simivalley | 33 | 4% |
| Guadalupe | 30 | 3% |
| El Rio | 27 | 3% |
| Vntra Cntl | 27 | 3% |
| Pasorobles | 24 | 3% |
| Arroyogrnd | 22 | 2% |
| Lompoc | 22 | 2% |
| Thousaoaks | 22 | 2% |
| Vntra East | 22 | 2% |
| Pismobeach | 18 | 2% |
| Santapaula | 18 | 2% |
| Snlusobspo | 16 | 2% |
| Gaviota | 15 | 2% |
| Piru | 14 | 2% |
| Cayucos | 11 | 1% |
| Conejo | 11 | 1% |
| Point Mugu | 11 | 1% |
| Santa Ynez | 11 | 1% |
7 further rate centres in 820 hold fewer blocks than these.
Carriers holding the most 820 blocks
Onvoy246 blocks
AT&T Wireless205 blocks
T-Mobile Usa, Inc.112 blocks
Fractel, Llc76 blocks
Verizon Wireless61 blocks
Onvoy Spectrum53 blocks
The largest holder, Onvoy, has 27% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 820 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 820 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 820?
Area code 820 covers Camarillo, California. It is not the only code there: 805 is an overlay on the same rate centres, so a Camarillo, California number can start with any of them.
Is a 820 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 820 the split runs 51% mobile, 1% landline and 48% VoIP, so mobile is the most likely single answer.
Which carriers hold 820 numbers?
The largest holders are Onvoy, AT&T Wireless, T-Mobile Usa, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 820 numbers are there?
The code holds 904 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 820 covers on the order of 904,000 possible numbers — most of which have never been issued to anyone.