USA Today has put out data on teen pregnancy that demonstrates that Northeastern teenagers don't get pregnant very much, while Southern and Southwestern teens do.
Of course, let the blathering over sex ed and TV and all that crapola continue. The correlation here is pretty simple. Let's look at the top three and bottom three states. I'll put the state's average income rank in parentheses.
1. Mississippi (51)
2. New Mexico (45)
3. Arkansas (49)
49. Massachusetts (7)
50. Vermont (22)
51. New Hampshire (6)
Vermont's a bit out of place, but otherwise? Looks like poverty is probably our biggest factor. North Dakota and Maine also buck the trend, of course, so poverty may not be everything. Perhaps it's pockets of concentrated poverty we're looking for?