1st MidAmerica Credit Union is a not-for-profit financial cooperative headquartered in Bethalto, Illinois, founded in 1934 as the Western Cartridge Company Employees Credit Union. It serves over 63,000 members across 10 branches in Illinois and Missouri, offering mortgages, auto loans, checking accounts, and investment services. The credit union is the 14th largest in Illinois and operates under an Illinois state charter.
