How to Join 1st MidAmerica Credit Union
1st MidAmerica Credit Union membership eligibility includes, but is not limited to, the following:
- You are related by blood, marriage or adoption to a current member;
- If you live in one of these counties:
Illinois Counties:
- Adams
- Bond
- Brown
- Calhoun
- Cass
- Champaign
- Christian
- Clinton
- DeWitt
- Effingham
- Fayette
- Fulton
- Greene
- Hancock
- Jefferson
- Jersey
- Logan
- Macon
- Macoupin
- Madison
- Marion
- Mason
- McLean
- McDonough
- Menard
- Monroe
- Montgomery
- Morgan
- Moultrie
- Piatt
- Pike
- Randolph
- St. Clair
- Sangamon
- Schuyler
- Scott
- Shelby
- Tazewell
- Washington
Missouri Counties:
- Jackson
- St. Charles
- St. Louis
- St. Louis City
Notable Mentions & Guides
- 🏆 Listed in the 2026 Best Credit Unions in Illinois.
- 👉 Learn: How to Join a Credit Union →
- 🔎 Explore: Credit Union Marketplace →


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