Oooooh ooooh new update, Cycle 5's Nik Pace gave birth to a baby boy on September 1st!
She did a photoshoot while heavily pregnant for Essence, see here:
http://getfreshdaily.typepad.com/log/2009/09/nik-from-antm-does-pregnant-photoshoot-and-has-baby.html (ignore that it says baby girl in there, every other site is saying a boy).
Also for some other randoms, who is married and/or who has kids (that I know of):
Adrianne Curry is, of course, married to former Peter Brady, Christopher Knight.
Shannon Stewart is married to fellow model Christian Matthew Ratcliffe. In fact, she took his name, so you may look for her under Shannon Ratcliffe.
Jenascia Chakos has a baby (no, I don't know what sex).
Yoanna House has a baby boy.
Brita Petersons is now married. She apparently got married March this year.
Michelle Deighton got married to a man named Jonny Fairplay of Survivor: Pearl Island. They have a daughter named Piper.
Rebecca Epley has a child.
Tatiana Dante has a baby also.
Lluvy Gomez is married and has a child.
Tiffany Richardson is married.
Nik Pace has a baby boy.
Sara Albert is married.
Jaeda Young is married.
Isis King is engaged.