1915 to present; not all states participated prior to 1933.
Mode of Collection
Census: records of all births registered in the United States.
Vital statistics natality data are a fundamental source of demographic, geographic, and medical and health information on all births occurring in the United States. This is one of the few sources of comparable health-related data for small geographic areas over an extended period of time. The data are used to present the characteristics of babies and their mothers, track trends such as birth rates for teenagers, and compare natality trends with those in other countries.
The U.S. population. All births registered within the United States.