I don't know if you like to exercise, but I find people in exercise classes to be friendly-misery loves company! Also, volunteering will put you in touch with other possible friends. It is nice to have a particular interest when "looking" for friends. If you like organized religion, there are young adult groups-not all are ultra-conservative, we have a group at our church who meet while having a few beers. Check out your local rec dept., there should be class or sport activities that are reasonably priced.
Good luck!