According to the National Campaign to Prevent Teen Pregancy, the teen pregnancy rates for girls ages 15-19 were highest in the South and Southwest, with Nevada, Arizona and New Mexico topping the list, followed by Texas, Florida, Mississippi and California (96-128/1000 girls).* The rest of the South (excluding Virginia) had rates of 88-95/1000 girls.
*This info came from a state graph, so I can't determine the order Texas, Florida, Mississippi and California should be in.
I also found this earlier info:
The number of Georgia teenagers per 1,000 who became pregnant in 1992 was the highest in the nation. Of the 10 states with the highest teen pregnancy rates, six are in the South.
1. Georgia 106.9
[*] 2. Nevada 106.0 3. North Carolina 104.6 4. Texas 103.7 5. Arizona 103.6 6. New Mexico 101.8 7. Mississippi 100.8 8. New York 96.6 9. Tennessee 94.010. Alabama 93.2* Number of pregnancies per 1,000 teenage girlsSource: Centers for Disease Control