Liberty is a village in Adams County, Illinois, United States. The population was 543 at the 2020 census. It is part of the Quincy, IL–MO Micropolitan Statistical Area. Geography Liberty is located at (39.879948, -91.108137). According to the 2021 census gazetteer files, Liberty has a total area of , all land. Liberty is west of Springfield, Illinois, the state capital, and northwest of St. Louis. History Liberty Township began with the first settlement made on Section 28, by Daniel Lile, in the spring of 1822, and many old settlers followed about the same time. The first regular preacher was George Wolfe of the Dunkard denomination. First horse mill was built by Daniel Lile. The first marriage was that of Jacob Waggle to a Miss Hunsaker, by the Rev. George Wolfe, at the house of the bride's father. The first birth and death, was an infant child of Mr. Kimbrick. The first Supervisor was David Wolfe. Demographics As of the 2020 census there were 543 people, 140 households, and 107 families residing in the village. The population density was . There were 227 housing units at an average density of . The racial makeup of the village was 94.48% White, 0.74% African American, 1.10% from other races, and 3.68% from two or more races. Hispanic or Latino of any race were 1.84% of the population. There were 140 households, out of which 86.43% had children under the age of 18 living with them, 59.29% were married couples living together, 17.14% had a female householder with no husband present, and 23.57% were non-families. 23.57% of all households were made up of individuals, and 16.43% had someone living alone who was 65 years of age or older. The average household size was 3.35 and the average family size was 2.84. The village's age distribution consisted of 30.4% under the age of 18, 5.5% from 18 to 24, 23.8% from 25 to 44, 19.4% from 45 to 64, and 20.9% who were 65 years of age or older. The median age was 40.8 years. For every 100 females, there were 78.5 males. For every 100 females age 18 and over, there were 81.0 males. The median income for a household in the village was $63,333, and the median income for a family was $70,804. Males had a median income of $41,000 versus $28,333 for females. The per capita income for the village was $23,995.