http://reno.gov/ Reno is the county seat of Washoe County, Nevada, United States. The city has a population of about 220,500 and is the most populous Nevada city outside of the Las Vegas metropolitan area. It sits in a high desert valley at the foot of the Sierra Nevada. Reno, known as The Biggest Little City in the World, is famous for its casinos, and is the birthplace of the gaming corporation Harrah's Entertainment. Reno is bordered to the east by the city of Sparks. The Reno-Sparks metropolitan area is informally called the Truckee Meadows, and consists of about 400,000 residents.