Address: Williamson County Regional Airport, 10400 Terminal Drive, Marion, Illinois 62959, USA
Operating company: Williamson County Airport Authority
Flight distribution on the days of the week: Monday (10.06%), Tuesday (16.98%), Wednesday (16.35%), Thursday (16.35%), Friday (16.35%), Saturday (7.55%), Sunday (16.35%)
Alternative spelling: Williamson County Regional, Марион (Иллинойс), マリオン (イリノイ州), 马利昂- 伊利诺伊州
