The 818 area code is the San Fernando Valley — Burbank, Glendale, Van Nuys, Studio City, and the rest of Los Angeles’s valley-side communities — carved out of 213 in 1984 and sharing its territory with the 747 overlay since 2009.
Most area codes are just administrative geography. 818 is one of the few that doubles as a demonym: “the 818” is how the Valley distinguishes itself from the Los Angeles over the hill. Here is where the code runs, how it got its borders, and how to read a call from it.
The Valley’s side of the hill
818 covers the San Fernando Valley portion of Los Angeles County: the independent cities of Burbank, Glendale, San Fernando, Calabasas, and Hidden Hills, plus the large slice of the City of Los Angeles that lies in the Valley — Van Nuys, Sherman Oaks, Studio City, North Hollywood, Encino, Northridge, Woodland Hills, and their neighbors, along with Universal City.
The Santa Monica Mountains are the practical boundary. South of the hills, Los Angeles runs on the downtown and Westside codes — the 213 area code and the 310 area code among them. North of the hills, it’s 818 and its overlay twin 747.
1984: the Valley leaves 213
For its first few decades of dial telephony, the Valley shared 213 — one of California’s original area codes — with the rest of Los Angeles. By the early 1980s the region’s growth had put 213 under real number pressure, and in 1984 the San Fernando Valley was split off into the new 818 code. The California Public Utilities Commission’s own numbering records describe the lineage plainly: 626 “was split off from 818 in 1997, which was itself split off the 213 area code in 1984.”
The split gave the Valley something it had never had: a number identity that stopped at the hills.
1997: the San Gabriel Valley leaves 818
The original 818 footprint was bigger than today’s. It stretched east past the Valley into the San Gabriel Valley — Pasadena and its neighbors. In 1997 that eastern territory was split off as the new 626 area code, which the CPUC describes as located entirely within Los Angeles County and generally covering the San Gabriel Valley.
The 1997 split is why “818” reads so cleanly as San Fernando Valley shorthand today: the code lost its only major territory that wasn’t the Valley.
747: the overlay, not a replacement
By the late 2000s, 818 itself was projected to exhaust. Rather than split the Valley again, the CPUC approved an all-services overlay on April 24, 2008, adding area code 747 to the same geographic region as 818. New 747 numbers began issuing in May 2009, after ten-digit dialing became mandatory across the region.
Overlay mechanics are the same everywhere: nobody’s existing number changed, and a 747 number is exactly as Valley-local as an 818 one — just drawn from the newer pool. Why overlays displaced splits as the default fix is covered in our guide to how area codes work.
The 818 as a badge
Two things sustain 818’s identity. The first is geography — the mountain wall makes “over the hill” a real border, and the code maps onto it almost exactly.
The second is the entertainment industry’s back office. Burbank is home to major studio lots, Universal City sits inside the code, and a large share of production, post-production, and studio-adjacent business runs on Valley phone numbers. An 818 caller ID from a production office is as ordinary as a downtown law firm calling from 213.
The result is a code people claim rather than merely have — worn on merchandise and dropped into conversation as Valley shorthand. That cultural weight is also why some longtime holders quietly prefer an 818 number over a 747 one, even though the network treats them identically.
The unknown 818 on your screen
Context first: the Valley’s routine callers are studios and production vendors, healthcare systems, schools, dealerships, and the small-business economy of a region of well over a million people.
Then the rule that outranks context: the displayed code proves nothing. A ported number keeps its 818 for life wherever its owner moves, VoIP originates anywhere, and spoofing can forge the display outright — including “neighbor spoofing” that deliberately mimics your own area code to earn a pickup. If an unexpected call asks for money, credentials, or urgency, hang up — then redial the studio, school, or dealership on its published line.
Claiming a Valley number
An 818 number is a local-presence asset with unusual pull: it signals Valley, not just Los Angeles. Businesses serving Burbank, Glendale, or the Valley neighborhoods — including operations based elsewhere that want a Valley front door — can take numbers in 818 or 747, issued at the rate-center level rather than by street address. Local presence dialing shows how matching the customer’s code lifts answer rates.
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Frequently asked questions
Why does the San Fernando Valley have its own area code?
Growth. The Valley shared 213 with the rest of Los Angeles until 1984, when number demand forced a split and the Valley received 818. The Santa Monica Mountains made a natural boundary, and the code has mapped onto Valley identity ever since — reinforced when the 1997 creation of 626 left 818 covering the Valley and nothing else.
Is 747 the same as the 818 area code?
Same territory, newer pool. The CPUC approved 747 in April 2008 as an all-services overlay of the 818 region, with new numbers issuing from May 2009. A 747 number is provisioned from the identical San Fernando Valley rate centers — the only difference is that the line was assigned after the overlay opened.
Did Burbank have the 213 area code before 1984?
Yes. Before the 1984 split, the entire Valley — Burbank, Glendale, and the San Fernando Valley neighborhoods of Los Angeles — dialed under 213 along with the rest of the city. The 213 code kept the central-LA side of the hills, and the Valley moved to the new 818.
When did Pasadena stop being in the 818 area code?
- The original 818 territory extended east into the San Gabriel Valley, including most of Pasadena. That eastern portion was split off as area code 626 in 1997, leaving 818 to the San Fernando Valley alone — the borders it still holds today, shared with the 747 overlay.
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