Primm is an unincorporated community in Clark County, Nevada, United States, primarily notable for its position straddling Interstate 15 where it crosses the state border between California and Nevada. It sits on Ivanpah Dry Lake, which extends to the north and south of town.
It was previously known by the name of State Line, but was renamed in 1996 to avoid confusion with Stateline in northern Nevada. It is named after the original developer of the town, Ernest Jay Primm.
The community's economy is based on its three casinos, which attract gamblers from Southern California wanting to stop before reaching Las Vegas 40 miles to the north, or as a last chance to gamble before leaving Nevada. Most of Primm's residents are employees of the casinos.
While not a census-designated place, the 2000 census population for the community is 436. A Clark County Comprehensive Planning Department estimate placed the population at 284 on July 1, 2006, apparently using different boundaries for the area. In a December 5, 2007 article in the Las Vegas Review-Journal, Primm's population is listed as around 1,132.