Montello, Nevada - Population 89 (2014) - Montello is a census-designated places in Elko County, Nevada, United States. It is home to Montello Elementary School which is part of the Elko County School District. The population of Montello is 84 as of 2010. Two small bars and a market/motel selling fuel & sundries comprise the business district. Various cattle ranching operations surround the area. Montello is part of the Elko Micropolitan Statistical Area.