Primm (formerly known as State Line and often called Primm Valley, after one of its casinos) is an unincorporated community in District A of 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 (two words), but was renamed in 1996 to avoid confusion with Stateline in northern Nevada. It is named after the original developer of the town, the casino owner 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 (64 km) to the north, or as a last chance to gamble before leaving Nevada. The community's hotels also serve as reliever hotels on the occasions when Las Vegas hosts major conventions. 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. In a December 5, 2007 article in the Las Vegas Review-Journal, Primm's population is listed as around 1,132.

The borders of Jean, Nevada extend south very close to Primm, so that the post office serving Primm (zip code 89019) on the northern edge of town actually has a Jean address.

en.wikipedia.org/wiki/Primm,_Nevada