the City of Las Vegas, also known as the entertainment capital of the world, Sin City, and the longitude and latitude center of the casino are located at 36 degrees 11 minutes and 31 seconds north latitude and 115 degrees 18 minutes and 11 seconds west longitude. Clark County, Nevada State, The United States of America. In 1919, Las Vegas became the county administrative center of Clark County. Established on May 5th, 1915, Mayor oscar goodman has an urban area of 341.1 square kilometers, including 339.8 square kilometers of land area and 1.16 square kilometers of water area. The metropolitan area of Las Vegas is 712 square kilometers. The average elevation of the city is 611 meters. Population Urban population is 552,511 (2116). The population density is 1,614 people/km2. The metropolitan population is 1.7775 million. Time Pacific Standard Time (PST). UTC-8。 Daylight saving time is Pacific Time Zone (PDT). UTC-7。 The telephone area code is 712 FIPS Code 32-41111 GNIS Feature ID 1847388. Las Vegas is the largest city in Nevada, USA. It is famous for its huge tourism, shopping and holiday industry centered on gambling, and it is one of the world-famous holiday resorts. From a giant amusement park to a real flesh-and-blood city, Las Vegas was transformed in 2111. Of the 38.9 million tourists who come to Las Vegas every year, most come to shop and enjoy food, and only a few come to gamble. Nevada, once satirized as "Sin City" and "gambling on wages", has gradually matured into a real city. From 1991 to 2111, the population of Las Vegas increased by 81%, and now it has reached about 1.9 million. And the attraction of this city has gradually become diversified. This city is no longer synonymous with "Las Vegas". Here, you can find food, art, entertainment and all the elements of a diversified city. Las Vegas, the most rootless place in the world, has finally taken root. One hundred years ago, Las Vegas was an unknown small village, which originated from Spanish, meaning "fertile grassland", because Las Vegas is the only oasis with spring water in the surrounding desolate desert and semi-desert area. Because of its spring water, Las Vegas has gradually become a post station for highways and a transit station for railways. Las Vegas was built in 1854 by Mormons in the western United States at that time. Later, Mormons moved away and American soldiers turned it into a military station. It opened in 1915. After the discovery of gold and silver mines in Nevada, a large number of gold miners poured in, and Las Vegas began to prosper, but like mining towns in the west, once the mines were lighted, they would be abandoned. On October 1, 1911, all casinos and brothels were closed. In 1931, during the Great Depression in the United States, in order to tide over the economic difficulties, Nevada Congress passed a bill to legalize gambling, and Las Vegas became a gambling city, which rose rapidly from then on. The main economic pillar of Las Vegas is the gambling industry. Because the casino is a gold bowl, tycoons from all over the United States have invested in Las Vegas to build casinos, and even Japanese tycoons, Arab princes and famous actors have invested. In 1991, even China City settled in Las Vegas, which soon became a gathering place for Asian Americans, and Las Vegas became the fastest growing city in the United States. The name of Vegas comes from the pioneers in the west many years ago. People named this desolate and arid barren land "pasture" to pray for a fertile grassland for grazing cattle and sheep. In the middle of 19 century, an army lieutenant who visited Las Vegas once thought in despair that no one would ever set foot in this desert again, but it took a hundred years to decorate the former desolation into today's bustling scene. Christianity calls human beings lost lambs, while Christ is the shepherd who saves the world. In this fertile pasture of Las Vegas, people are grazing with endless desires, but who is looking after these lambs? In 1829, Mexican businessmen discovered this huge valley and began to live here. Then a group of Mormons from Utah moved here. In 1891, the access of the United Pacific Railway made it prosperous gradually. A small town was established. On May 5th, 1915, Las Vegas was officially established. In the 1931s, the Hoover Dam, 47 kilometers southeast of the dam, was built. Lake Mead behind the dam is one of the largest artificial lakes in the world, and sufficient water and electricity supply also promoted the development of Las Vegas. In 1931, the Nevada state legislature formally passed the bill to legalize gambling. In 1946, a large casino appeared in Las Vegas. In 1951s, it developed into a famous tourist destination featuring gambling, and in 1961s, it opened a desert resort. The city's economy mainly depends on tourism. There are many luxurious nightclubs, hotels, restaurants and casinos in the city, including Charleston Entertainment District and Canyon National Expo. The suburbs are mining areas and pastures, and there are large-scale Nevada proving grounds of nellis afb, American Energy Research Institute and Development Bureau. Every May, during the Hull dorado Festival, residents wear ancient western costumes to hold competitive performances and parades. Las Vegas was founded in 1915. In the 1931s, Nevada decided to legalize gambling. Almost overnight, casinos were set up in the downtown area, among which Charleston Entertainment District and Death Valley National Expo were very representative. The name of Las Vegas "Las Vegas" also spread. 251 casinos and more than 61,111 "slot machines" are open day and night, and their style can be compared with Monte Carlo, the world capital of Monaco in Europe. Now Las Vegas has the world's top resort hotels and world-class large-scale performances and high-tech entertainment facilities.