Nevada
Nevada is a western state in the United States of America. It contains the famed gambling city of Las Vegas, and smaller cities such as Fallon and (possibly) Tranquility.
Hoover Dam is right on the border between Nevada and Arizona.
Fiction
Marvel Comics continuity
Having lost control of himself, Snarl went on a rampage in Black Rock Desert in Nevada, where he wrecked a human military base before being retrieved. Dinobot Hunt!
Autobase was located in a basin somewhere in Nevada. Swarm Ultimately, the final confrontation with the Swarm took place there. A Rage in Heaven!
Dreamwave Generation One comics
By striking deals with certain humans, Starscream temporarily conquered Las Vegas. Keepers Trilogy
IDW Generation 1 comics
Scorponok sent Grimlock to Fallon, Nevada, where he was pitted against the brainwashed Dinobots Maximum Dinobots issue 2 and then the Sunstreaker clone hordes. Chuck in the Monsterbots and damn was the town trashed. Maximum Dinobots issue 3
Transformers (2007)
Tranquility may or may not be located in Nevada.
IDW Transformers movie sequel comics
Sector Seven have a secret base in Nevada, where they keep various N.B.E.s. The Reign of Starscream #3
