Cheyenne, WY is a city located in Laramie County, Wyoming and has a land area of 1,526.72 square miles (2.59 km2). The water area for the city is 1.40 square miles or 3.63 km2. There are 7 total unique zip codes in Cheyenne, Wyoming. The area code(s) for Cheyenne is 307.
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