The number one place to meet single young Orthodox women in Los Angeles is Beth Jacob. Too bad I'm banned.
There's a new single woman in Young Israel of Century City who has all the single men ga-ga. She's beautiful, dresses invariably in hot pink and is so religious that she even comes to mincha and shalosh seudos on Shabbos. This woman is the Jewish Cameron Diaz and only 22 or so.
Due to an expansion in its membership, Beth Jacob had to move the Happy Minyan on and out. The HM now meets at Magen David, which became Orthodox about four years ago.
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