Metropolitan Area,Reports per 100K Population "Casper, WY Metropolitan Statistical Area",428 "Cheyenne, WY Metropolitan Statistical Area",508 , "This chart identifies Metropolitan Areas (Metropolitan and Micropolitan Statistical Areas) with a population of 81,000 or more. Metropolitan areas are defined by Office of Management and Budget Bulletin No. 15-01, ""Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas"" (July 15, 2015).",