The National Survey of Children's Health is a nationally representative telephone survey of parents or guardians, sponsored by the Maternal and Child Health Bureau within the Health Resources and Services Administration. The definitions of rural used for the present report follow those used by the Maternal and Child Health Bureau, which classify children's residence as urban, large rural or small rural based on Rural Urban Commuting Area codes. Details are provided in the Technical Notes (Appendix A). In the body of the report, we provide graphs illustrating changes in oral health measures over time. A companion report, Improving Rural Oral Health: Six States' Response to the United States Department of Health and Human Services Oral Health Strategic Framework, provides examples of programs in six states aimed at improving oral health equity in rural populations.