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307 Area Code Phone Directory

Phone Prefixes in the 307 Area Code

(307) 2XX (307) 3XX (307) 4XX (307) 5XX (307) 6XX (307) 7XX (307) 8XX (307) 9XX

Information for Area Code 307

State: WY

Largest City in Area: CHEYENNE

Where is Area Code 307?

Area code (307) is in the state of WY. Below, are the major cities in the area code (307).

Area Codes Starting with 3

Major Cities in 307

CHEYENNE, WY (263,463)

CASPER, WY (207,300)

LARAMIE, WY (128,745)

GILLETTE, WY (104,883)

ROCK SPRINGS, WY (77,520)

SHERIDAN, WY (73,326)

RIVERTON, WY (63,330)

CODY, WY (54,019)

GREEN RIVER, WY (42,650)

LANDER, WY (40,170)

Zip Codes in 307

82615

82620

82630

82633

82635

82636

82637

82638

82639

82640

82642

82643

82644

82646

82648

82649

82701

82710

82711

82712

82714