858 area code: location, overlays and numbers
In San Diego, California, US telephone area code 858 has been in service since 1999 and shares an overlay with 619.
- Location
- San Diego, California
- Serving since
- 1999
- Local time zone
- Pacific time zone
- Overlay
- 619
- Calling locally
- Full 1 + 10-digit dialling
- Rate centre list
- 19
- Exhaust, projected
- 2039
- Country prefix
- +1 (United States)
Source: NANPA public reports, the area code report and the rate-centre report. File date: 11/01/2026. The exhaust year comes from the NANPA projections set 2026-1 (April 2026). We are not an official NANPA site.
Get an 858 number
You can reach an 858 number in two ways. Your plan from a provider includes a new number, selected at sign-up from the numbers that provider holds in the code. Sellers post numbers they already hold, often with a pattern, and the price is one-time. You then transfer that number 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 listing 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. The order stays the same, based on first-year cost. How we earn
Places in the 858 area code
For 858, NANPA lists 19 rate centres. Each one is a local calling area where numbers are assigned:
Poway, Pine Valley, Campo, La Mesa, Coronado, Jacumba, Chula Vista, Del Mar, Rancho Santa Fe, El Cajon, Dulzura, La Jolla, National City, Rancho Bernardo, Harbison-alpine, Rancho Penasquitos, San Diego:mira Mesa Da, San Diego:linda Vista Da, San Diego:san Diego Da.
Other related area codes
Same area and the same pool of numbers: 619. Any of these codes can supply a new number in this area, so ask for the one you want.
California area codes also include 213, 415, 916, 714, 805, 209, 408, 707, 818, 510, 310, 909, 562, 760, 626, 650, 530, 925, 949, 323, 831, 559, 661, 951, 424, 657, 747, 442, 669, 628, 279, 820, 341, 840, 350, 369, 738, 837 and 357.
Guides for the city: area codes for San Diego.
858 area code questions
Where is the 858 area code?
Calls to 858 ring in San Diego, California, in the San Diego-Cula Vista-Carlsbad, CA area.
Which country code does a 858 number use?
+1. 858 belongs to the North American Numbering Plan, so calls from abroad use +1 858 plus the 7-digit number.
What time is it in the 858 area code?
The 858 area code uses Pacific time.
Who places calls from a 858 number?
Anyone holding a number in this code can call: homes, mobiles, local businesses and people who fake a local number. When you see a 858 number, it shows where that number was assigned, not the person calling.