Lincoln County is included in the Hailey, ID Micropolitan Statistical Area.22.90% of all households were made up of individuals, and 10.20% had someone living alone who was 65 years of age or older.Out of the total population, 18.30% of those under the age of 18 and 7.00% of those 65 and older were living below the poverty line.As of the 2010 United States Census, there were 5,208 people, 1,705 households, and 1,271 families living in the county.[16] As of the 2020 United States Census, there were 5,127 people and 1,804 households living in the county.School districts include:[19] The county is in the catchment area, but not the taxation zone, for College of Southern Idaho.