Winnemucca is the only incorporated city in Humboldt County, Nevada, United States, of which it is also the county seat, encompassing approximately half of the total population of the county. As of the 2020 census, the city had a total population of 8,431, up 14% from the 2010 census figure of 7,396. Interstate 80 passes through the city, where it meets U.S. Route 95.