Don't expect geeky girls to hang around bars and clubs; look for them in different places, such as local videogame shops, board game areas, and even game-night dinner parties. You can check some local nerdy small businesses to find one. And of course, you can try online for comic shops, gaming groups, and even trivia nights to taste some success.
Online dating sites will play a significant role, as well. If you're looking for well-educated and stable girls for long-term dating, you may benefit from Match.com. You can turn to Cupid.com, though, if you're looking for something in between Match.com and QuickFlirt.com.