The National Child Count of Children and Youth who are Deaf-Blind is the first and longest running registry and knowledge base of children who are deaf-blind in the world. It has been collaboratively designed, implemented and revised to serve as the common vehicle to meet federal grant requirements for both the State/Multi-State and National Deaf-Blind Technical Assistance Projects, as well as serving as a common data collection and reporting mechanism for use across the country. Consistent with the priorities under which the National Center on Deaf-Blindness (NCDB), its predecessors, and the state/multi-state deaf-blind projects are funded, this national child count is used to help identify national and state technical assistance needs for children and youth who are deaf-blind, their families and the service providers and systems which serve them. The child count is conducted each year to supplement the Office of Special Education Program's Federal Part C and Part B Child Counts (Special Education Child Count), which include children as deaf-blind only when deafblindness is their single disability. The National Deaf-Blind Child Count Summary December 1, 2013 for ages birth through 21 by state is presented in this document. [For the 2012 Dead-Blind Child Count, see ED545213.]