Popular Area Codes Starting with 6
- 601Mississippi
- 602Arizona
- 603New Hampshire
- 605South Dakota
- 606Kentucky
- 607New York
- 608Wisconsin
- 609New Jersey
- 610Pennsylvania
- 612Minnesota
- 614Ohio
- 615Tennessee
- 616Michigan
- 617Massachusetts
- 618Illinois
- 619California
- 620Kansas
- 623Arizona
- 626California
- 630Illinois
- 631New York
- 636Missouri
- 641Iowa
- 646New York
- 650California
- 651Minnesota
- 657California
- 660Missouri
- 661California
- 662Mississippi
- 667Maryland
- 669California
- 678Georgia
- 681West Virginia
- 682Texas
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