This report is the 33rd edition of the annual National Child Count of Children and Youth Who Are Deaf-Blind, the first and longest running registry and knowledge base of children who are deaf-blind in the world. Begun in 1986 on behalf of the U.S. Department of Education, it represents a collaborative effort between the National Center on Deaf-Blindness (NCDB), its predecessors, and each state and multi-state deaf-blind project throughout the country, as well as projects funded in the Pacific Trust territories, the Virgin Islands, and Puerto Rico. The National Deaf-Blind Child Count has been collaboratively designed, implemented, and revised to serve as a common vehicle to meet federal grant requirements for both the state and multi-state deaf-blind technical assistance projects and NCDB, as well as serve as a common data collection and reporting mechanism for use across the country. Consistent with the priorities under which NCDB, its predecessors, and the state and 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 that serve them. [For the 2017 report, see ED590350.]