The U.S. Census Bureau is not the primary source for data on births.
The primary source is the NATIONAL CENTER FOR HEALTH STATISTICS (NCHS). NCHS can provide information on number of births, percent unmarried mothers, and more.
Contact NCHS: 1-800-232-4636 or firstname.lastname@example.org
For a current socioeconomic profile of women who have had a birth, visit the Fertility web site.
The U.S. Census Bureau uses birth data from NCHS and from state departments of vital statistics in our population estimates and projections programs. The data presented in these products have been modified by our estimates and projections procedures and therefore will differ from the annual births released in NCHS products.