A Family Profile of Main Street CDC In approximately: 65% of our families, English is a second language. 45% of our families, there is a single parent. 45% of our families, the parents have no health coverage or insurance. The majority of MSCDC families come from limited-income households and many are among Fairfax County's "working poor." Main Street Child Development Center continues to celebrate and serve the diversity of Fairfax County. 22 Countries and 22 languages are represented by parents and staff. We celebrate dibersity.