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U.S. Area Codes by Number: 6
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US AREA CODES STARTING WITH THE NUMBER 6
601
Mississippi
626
California
602
Arizona
627
California
603
New Hampshire
628
California
605
South Dakota
630
Illinois
606
Kentucky
631
New York
607
New York
636
Missouri
608
Wisconsin
641
Iowa
609
New Jersey
646
New York
610
Pennsylvania
650
California
612
Minnesota
651
Minnesota
614
Ohio
657
California
615
Tennessee
660
Missouri
616
Michigan
661
California
617
Massachusetts
662
Mississippi
618
Illinois
669
California
619
California
678
Georgia
620
Kansas
679
Michigan
623
Arizona
682
Texas