The CDC has a great HIV and STD testing resource that provides information about HIV, safer sex, healthy living with HIV and a quick locator to find free, confidential HIV testing near you. All you have to do is enter your ZIP code. Some Walgreens and RiteAid pharmacies are now testing sites, making it more convenient to get tested than it ever has been.
To find a testing center near you, just enter your ZIP code at this CDC site.