CEFCU membership criteria allow employees of Caterpillar Inc. and Caterpillar dealers, partner companies (those working for about 550 specific companies with a CEFCU relationship), plus individuals who live or work in fourteen central Illinois counties, or who live, work, or worship in three California counties to belong to the credit union.
Membership in CEFCU is open to Caterpillar employees, dealers, and their partner firms (around 550 organizations), along with individuals residing in particular central Illinois counties or California counties.