Area Code 628

628 area code is being used for dialing/telecommunication purposes in California, covering 4 major cities and 2 counties, according to (NANP) North American Numbering Plan for 3-digit Numbering Plan Area (NPA) code. All the areas using NPA code 628 is part of PST (Pacific Standard Time) timezone.

628 Area Code Covers 4 Cities

Check this below table to know 4 major cities (having more than 20,000 population) in California using numbering plan area code 628 for dialing/telecommunication purposes.

City	ZIP Codes	Population
Novato, CA	1	53,055
San Francisco, CA	48	851,036

2 Counties Using 628 as Area Code

628 area code is being used in 2 counties of California for dialing/telecommunication purposes.

• Marin County, CA
• San Francisco County, CA

47 More NPA Codes Related to Area Code 628

1 or more of these 47 NPA codes are being used in the same or adjacent states of California in the United States.

• 209 Area Code
• 213 Area Code
• 279 Area Code
• 310 Area Code
• 323 Area Code
• 341 Area Code
• 408 Area Code
• 415 Area Code
• 424 Area Code
• 442 Area Code
• 458 Area Code
• 480 Area Code
• 503 Area Code
• 510 Area Code
• 520 Area Code
• 530 Area Code
• 541 Area Code
• 559 Area Code
• 562 Area Code
• 602 Area Code
• 619 Area Code
• 623 Area Code
• 626 Area Code
• 650 Area Code
• 657 Area Code
• 661 Area Code
• 669 Area Code
• 702 Area Code
• 707 Area Code
• 714 Area Code
• 725 Area Code
• 747 Area Code
• 760 Area Code
• 775 Area Code
• 805 Area Code
• 808 Area Code
• 818 Area Code
• 820 Area Code
• 831 Area Code
• 858 Area Code
• 909 Area Code
• 916 Area Code
• 925 Area Code
• 928 Area Code
• 949 Area Code
• 951 Area Code
• 971 Area Code

Only One State Uses Area Code 628

• California