Area code 415
Get a local California phone number
Looking to expand into California? Start by getting a local phone number in the 415 area code from Sideline. The Sideline app conveniently adds a second number to your phone, and our patented technology provides reliable, carrier-level call quality and texting.
Why choose Sideline for your 415 phone number?
Establish a local presence quickly and easily
There’s no need for a second phone when you’ve got Sideline. Just download the app to add a second number to the phone you already have, and connect with the local community.
Keep your communication separate and organized
Sideline helps you keep work separate from your personal life with a dedicated second number, a custom voicemail, personalized ringtones, and a Sideline-specific contacts list.
Identify callers and reduce spam
You’ll always know who’s calling with Sideline’s advanced Caller ID, and Spam Filtering automatically detects spam calls and sends them straight to voicemail for your review.
Access your second number from any device
Whether you’re on the go or working from home, your Sideline number is always there for you. Use the mobile app on your phone and tablet, or access Sideline on the web.
How do I get a 415 phone number with Sideline?
- Choose a local number
- Select a monthly or yearly plan*
- Start sharing your new phone number!
Sideline is more than just a second number
Superior Call Quality
Sideline uses your carrier’s network for top-tier call quality.
No WiFi Needed
Unlike VoIP services, Sideline gives you the freedom to leave your WiFi network.
Avoid Spam
We detect spam calls, telemarketers, and potential fraud so you can easily avoid them.
Auto-Reply
Send an automated text reply to any missed calls or messages.
Separate Voicemail
Record your Sideline greeting so people can leave a message after the beep.
Unlimited Messaging
Send unlimited SMS, MMS, and group messages.
Number Porting
Already have a second number? Bring it to Sideline from another device or landline.
Ring & Text Tones
Differentiate between numbers with unique ring and text tones.
About the 415 Area Code
Where the 415 area code covers
Area code 415 serves San Francisco (city and county), much of Marin County, and a small part of northern San Mateo County. Major communities in this area include San Francisco, San Rafael, Novato, Mill Valley, Sausalito, Larkspur, Tiburon, Corte Madera, Fairfax, Ross, Brisbane, and Daly City.
Overlays for the 415 area code
The 628 overlay took effect on March 21, 2015, bringing the same geographic coverage as 415. Because of this overlay, all local calls within the 415/628 region require 10-digit dialing (area code and phone number).
Time zone for the 415 area code
The 415/628 area follows Pacific Time (PST / PDT), just like the rest of California.
Interesting facts about the 415 area code in California
- The Golden Gate Bridge opened in 1937 and remains one of the most photographed bridges in the world.
- San Francisco's cable cars became a National Historic Landmark in 1964.
- Alcatraz Island was a federal prison from 1934 to 1963 and now draws many visitors as part of Alcatraz Island National Park.
- BART (Bay Area Rapid Transit) began operation in 1972, linking San Francisco to surrounding counties.
- California joined the U.S. in 1850 (as the 31st state), during the era of the Gold Rush.
- The Bay Area is home to world-renowned institutions like UCSF (San Francisco) and UC Berkeley (across the Bay).
- San Francisco's Financial District is a major hub for banking, fintech, and venture capital on the West Coast.
- The region features a Mediterranean climate, with cool, foggy summers heavily influenced by the Pacific Ocean.


