Mono City is an unincorporated community and census-designated place in Mono County, California, United States. It lies north of Mono Lake at the base of the Sierra Nevada at the junction of U.S. Route 395 and California State Route 167. The ZIP Code is 93541; mail to Mono City should be addressed Lee Vining. The population was 224 at the 2020 census, up from 172 at the 2010 census.