Membership is open to anyone residing or working in LaSalle, Livingston, Marshall, Grundy, Putnam, Woodford, McLean, Bureau, Stark, Peoria, Tazewell, Ford, Iroquois, Kankakee, Will, and Kendall Counties (including all relatives). Once open to only a select few, SOCU now has over 29,000 members, serves 16 counties and over 30 select employer groups. We have been serving members since 1939. We have branches in 4 cities, Streator, Dwight, Morris and Pontiac Illinois.