The top choices would be at a church, a sporting event, the beach or at some sort of social gathering. You could also try coffee shops or the local library. It probably wouldn't hurt to check out a local club or maybe even a bar.
Join a singles club and go to their events. Go to a popular bar and check out the local color. Check out the singles want ads on Craigslist. Go on a trip advertised by your local city recreation.
You might try logging on to an online dating service. Although sometimes people often post unrealistic pictures of themselves, you might find someone interesting and get a real picture.