MCU can trace its beginnings to 1991. By 1997, four geographic clusters, CUCA (Churches United for Community Action) in North County, C4 (Churches Committed to Community Concerns) in South City, CACI (Congregations Allied for Community Improvement) in North City, and MCU-ISAIAH in South County, joined together to create the regional organization MCU. Eventually CACI and C4 joined forces to become MCU-City. MCU now operates as an organization of member congregations, organizations, and individuals which reaches throughout the Metropolitan area–St. Louis City, St. Louis County, and St. Charles County. Our work is carried out primarily by volunteers who are actively involved in working committees and issue task forces. They are supported by a small, professional staff trained in community organizing techniques.