Cheyenne added 370 new residents between July 2017 to July 2018, which was the most for any town in the state, according to Wyoming TribuneEagle and the U.S. Census Bureau.

Most towns in Wyoming lost residents during that time. Cheyenne remains the most populated city in the Cowboy State.

Towns with populations of 2,000 residents or more that had he most increase in population:

  • Cheyenne increased its population by 0.6%.
  • Cody by 0.5%
  • Mills by 0.4 %
  • Buffalo by 0.4% annual growth.

There were six towns that lost a minimum of 1.2% of their population, which is a huge loss. Casper and Rock Springs lost the most people. Casper lost 351 residents and Rock Springs lost 291 residents.

The Cowboy State's population dropped quite a bit in 2018, down 1,197 people.