Originally chartered in 1956 to serve the military and civilian personnel at Fort Sill, Fort Sill Federal Credit Union (FSFCU) has a long history of providing financial services to its community. In 2024, FSFCU merged with Oklahoma's Credit Union (OKCU) to expand its service offerings, technology, and branch access for its members. Now operating as a division of OKCU, it continues its mission to be its members' trusted financial partner by offering competitive rates and personalized service for savings, checking, loans, and investment products under the NCUA-insured umbrella of the larger credit union.