650 Area Code
San Francisco Peninsula, California
Area code 650 is located in San Francisco Peninsula, California. It covers Palo Alto, Redwood City, and surrounding areas in the Pacific time zone (UTC-8). Administered by NANPA.
Where is area code 650?
Area code 650 is located in San Francisco Peninsula, California. It covers Palo Alto, Redwood City, and surrounding areas in the Pacific time zone (UTC-8).
Cities Covered by Area Code 650
Area code 650 primarily serves the San Francisco Peninsula area of California. The exact coverage includes Palo Alto, Redwood City, and San Mateo, along with surrounding communities and suburbs.
Time Zone
Pacific Time — UTC-8
Area code 650 operates in the Pacific Time Zone. When calling 650 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 650
Area code 650 was introduced in 1997 as a geographic area code serving San Francisco Peninsula, California. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.