Reno is a city in the northwest section of the U.S. state of Nevada, along the Nevada–California border, about 22 miles (35 km) north from Lake Tahoe, known as "The Biggest Little City in the World". It is the county seat and most populous city of Washoe County sitting in the High Eastern Sierra foothills, in the Truckee River valley, on the eastern side of the Sierra Nevada. The Reno metro area occupies a valley colloquially known as the Truckee Meadows, it is the 81st most populous city in the United States, the 3rd most populous city in Nevada, and the most populous in Nevada outside the Las Vegas Valley.