How to Join Highmark Federal Credit Union
Highmark Federal Credit Union membership eligibility includes, but is not limited to, the following:
- Persons who live, work, worship or attend school in Butte, Custer, Fall River, Harding, Lawrence, Meade or Pennington County, South Dakota,
- Persons who live, work, worship or attend school in Campbell, Crook, Niobrara and Weston County, Wyoming
Notable Mentions & Guides
- 🏆 Listed in the 2026 Best Credit Unions in South Dakota.
- 👉 Learn: How to Join a Credit Union →
- 🔎 Explore: Credit Union Marketplace →


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