Be aware that people are calling members and claiming to be employees of Sunlight FCU or law enforcement to get account information. If you are not sure of the person you are talking to don't give out any information. Hang up and call your local branch number directly.

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Yellowstone Blue Mountain

Become A Member

Become A Member

Membership Info

Who Can Become a Member

Persons who live, work, worship, or attend school in, and businesses and other legal entities located in the rural district of Albany, Big Horn, Campbell, Carbon, Converse, Crook, Fremont, Goshen, Hot Springs, Johnson, Laramie, Lincoln, Natrona, Niobrara, Park, Platte, Sheridan, Sublette, Sweetwater, Teton, Uinta, Washakie, or Weston Counties, Wyoming; or Carbon, Stillwater, Sweet Grass, Park, Gallatin, Broadwater, Powder River, Custer, Rosebud, Treasure, Big Horn, or Yellowstone Counties, Montana; or Grand, Rio Blanco, Jackson, Routt, or Moffat Counties, Colorado

How to Join

Visit one of our locations to complete the paperwork and deposit your $25 pledge.