Women age 15-19 Births. Women age 15-19 Pregnancy's. Top 10 States With Highest Teenage Pregnancy and Birth Rates. A September 2006 report by the Guttmacher Institute compiled teenage pregnancy statistics in the United States gathered state by state in 2000. Based on available data, below are listings of states ranked by pregnancy and birth rates. States ranked by rates of pregnancy among women age 15-19 (pregnancies per thousand): Nevada (113) Arizona (104) Mississippi (103) New Mexico (103) Texas (101) Florida (97) California (96) Georgia (95) North Carolina (95) Arkansas (93) States ranked by rates of live births among women age 15-19 (births per thousand): Mississippi (71) Texas (69) Arizona (67) Arkansas (66) New Mexico (66) Georgia (63) Louisiana (62) Nevada (61) Alabama (61) Oklahoma (60) Source:"U.S.