Area code 415

Area code 415 at a glance

415 is one of 41 geographic area codes serving California; NANPA records its in-service date as January 1, 1947. It is an overlay: 415 and 628 cover the same territory, so neighbors on the same street can have different area codes. It is in the Pacific time zone. The places with the most assigned exchanges include San Francisco, San Rafael, Novato, Sausalito, and Mill Valley. By population, its largest named places are San Francisco, San Rafael, Novato, Mill Valley, and Corte Madera.

Cities and towns in area code 415

415 holds 3.6% of the 22,087 central office codes assigned in California, the 8th most of the state's 41 codes. 7 Census places could be matched to rate centers with 415 exchanges; the most populous are San Francisco (828,000), San Rafael (59,961), Novato (52,311), and Mill Valley (13,904). For a storefront or service area inside 415, the place pages show which prefixes are rated local there.

Ten-digit and seven-digit dialing in 415

According to NANPA's dialing-plan data, local calls within 415 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere.

Carriers with 415 numbers

33 carriers hold the 785 central office codes assigned in 415. Pacific Bell has the most, with 326 (42%). 495 of the codes (63%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. Numbers can move between carriers through porting, so a code's holder tells you where the block started, not where every number lives now.

Where 415 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 415 has codes in 14 rate centers. The table lists the rate centers with the most codes, with the matching Census place where the abbreviation could be matched.

415 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 785 are assigned in 415, 98% of 800. 7 were assigned in 2020 or later.

Getting a 415 number for your business

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

If you already have a number in area code 415, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.