This report presents national birth rates for teenagers for 1991-1998 and the percent change from 1991 to 1998. State-specific teenage birth rates by age, race, and Hispanic origin for 1991 and 1998, and the percent change, 1991 to 1998, are also presented. Tabular and graphical descriptions of the trends in teenage birth rates for the United States and each state are discussed by age, race, and Hispanic origin of the mother. Birth rates for teenagers 15 to 19 years old declined nationally between 1991 and 1998 for all age and race and Hispanic origin populations, with the steepest declines recorded for Black teenagers. State-specific rates fell significantly in all states for ages 15 through 19 years. Declines ranged from 10 to 38%. In general, rates by state fell more for younger than older teenagers, ranging by state from 10 to 46% for ages 15 to 17 years. Statistically significant reductions for older teenagers ranged from 3 to 39%. Reductions by state were largest for black teenagers 15 to 19 years, with rates falling 30% or more in 15 states. Among the factors accounting for these declines are decreased sexual activity, increased condom use, and the adoption of the implant and injectable contraceptives. (SLD)