Alton
Altonized Community Federal Credit Union

Laclede Community Credit Union

Olin Community Credit Union

Belleville
Catholic & Community CU

Scott Credit Union

Cahokia
Scott Credit Union

Carbondale
SIU Credit Union

Caseyville
Unit 10 Credit Union 

Collinsville
Scott Credit Union

East Alton
Olin Community Credit Union

Edwardsville
GCS Federal Credit Union

Scott Credit Union

SIUE Credit Union

Fairview Heights
Scott Credit Union

Granite City
GCS Federal Credit Union

Processors-Industrial Community Credit Union

School District No. 9 Credit Union

Marion
SIU Credit Union

Mt. Carmel
Three Rivers Community Credit Union

O'Fallon
Scott Credit Union

Pontoon Beach
GCS Federal Credit Union

Scott Air Force Base
Scott Credit Union

Swansea
Southern Illinois Area Credit Union 

Waterloo
Scott Credit Union

Wood River
Atlas Community Credit Union

Community Educational FCU

Shell Community Federal Credit Union