Monowi is the least populous incorporated village in the United States by population by having a population of one. It is in Boyd County, Nebraska, United States, and received national and international attention after the 2010 United States census recorded only one resident in the village, Elsie Eiler, who serves as its mayor, librarian, clerk, and treasurer. Although the 2020 census listed Monowi's population as two, this was confirmed to be an example of differential privacy in the census data; Eiler remains the town's sole resident.