Wyoming is a state in the Western United States. According to the 2020 United States Census, Wyoming is the least populous state with inhabitants but the 9th largest by land area with . Wyoming has 23 counties and 96 municipalities consisting of cities and towns. Wyoming's municipalities cover only of the state's land mass but are home to of its population.
Wyoming's most populous municipality is the capital city Cheyenne with 65,132 residents, and the largest municipality by land area is Casper, with an area of , while the smallest municipality in both categories is Lost Springs with 6 residents and an area of .
A Wyoming statute indicates towns are municipalities with populations of less than 4,000. Municipalities of 4,000 or more residents are considered "first-class cities".