Fayette County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 21,488. Its county seat is Vandalia, the site of the Vandalia State House State Historic Site. Ramsey Lake State Recreation Area is located... Wikipedia
Cities: Vandalia, Brownstown, Ramsey, and more
Population: 21,305 (2022)
County seat: Vandalia
Congressional district: 15th
Founded: 1821
Named for: Marquis de Lafayette
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