You are eligible for membership into 1st MidAmerica Credit Union if:
- 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
 
- We serve the financial needs of employees of several select employee groups we serve.
 
