Las Vegas is the governmental center of its county.
A county seat is an administrative center , seat of government , or capital city of a county or civil parish . Las Vegas ( [ lɑːs_ˈveɪɡəs ] , Spanish for `` The Meadows '' ) , officially the City of Las Vegas and often known simply as Vegas , is the 28th-most populated city in the United States , the most populated city in the state of Nevada , and the county seat of Clark County .