Las Vegas, colloquially known as Vegas, is the most populous city in the state of Nevada and serves as the seat of Clark County. It ranks as the 24th most populous city in the United States, with a population of 641,903 according to the 2020 census. The Las Vegas metropolitan area is estimated to have around 2.4 million residents, making it the 29th largest metropolitan area in the nation. 

Las Vegas is a globally recognized major resort city, primarily famous for its gambling, shopping, fine dining, entertainment, and vibrant nightlife. Most of these attractions are situated in downtown Las Vegas or along the Las Vegas Strip, which lies outside the city limits in the unincorporated communities of Paradise and Winchester. The Las Vegas Valley is the foremost financial, commercial, and cultural hub in Nevada.

Las Vegas was established in 1905 and officially became a city in 1911. By the end of the 20th century, Las Vegas was the most populated city in North America that had been founded during that century. The city’s population growth has accelerated since the 1960s and into the 21st century, with an increase of 85.2% between 1990 and 2000.

The city promotes itself as the 24-Hour Entertainment Capital of the World and is renowned for its opulent and expansive casino-hotels. As of 2023, Las Vegas draws more than 40.8 million visitors each year, making it one of the most frequented cities in the United States and consistently ranking among the top tourist destinations worldwide.

Las Vegas, Nevada is the third most popular U.S. location for business conventions and a global frontrunner in the hospitality sector. The Las Vegas Monorail serves as transportation around Las Vegas. The city’s acceptance of various forms of adult entertainment has led to its nickname “Sin City,” and it has become a favored backdrop for films and music concerts.