There is no single, definitive website that lists individual Vietnam veterans by their state of birth. However, many online resources are available for friends or family members trying to search for information on a Vietnam veteran.
The Vietnam Veterans Memorials page lists Vietnam War memorials by state with a considerable quantity of contact information. The Vietnam Veterans Memorial Wall Page includes a function that permits users to conduct a search using the veteran's home state among a variety of other identifiers. The official website of the National Archives also provides information on how to conduct a search for Vietnam veterans.