The HIV/AIDS Atlas is a new tool that allows health care professionals, policy makers, and the public to view county-level prevalence data in all 50 states, to see the impact HIV/AIDS is having on their local community. The atlas provides HIV/AIDS statistics by age, gender, and race/ethnicity, whenever the data is available. Users may also view data for their congressional and state legislative districts overlaid on top of the county-level data. Zip code-level data, currently available only for New York City, will eventually be provided for as many geographic areas as possible. Most of the statistics are based on 2006 data, with plans to incorporate 2007 data for all states in the next iteration of the atlas. To “Travel the Atlas” users simply register for a username and password. The registration process is free! After entering the atlas, use the navigation bar to the left of the map to select a state, county, U.S. congressional district, or state legislative district. Then in the upper right corner of the map, choose the desired prevalence rate and demographic you wish to view.