Is there an official DMV website?

Each of the 50 states and Washington, D.C. have their own Department of Motor Vehicles, and each of these maintains an independent website. An index of all of these sites can be found at the Nevada DMV website.

State DMV websites can be found through a Google search, and are also usually linked prominently from the state's main website (the URL of which is usually the state's name or two-letter abbreviation followed by a ".gov"). There is no central federal site for state DMVs, but there are unofficial privately-owned sites such as dmv.org that can provide assistance in navigating the state DMV sites.