Marion, Illinois, is a vibrant and growing city serving as the county seat of Williamson County in Southern Illinois. Founded in 1839 and named after Revolutionary War hero General Francis "Swamp Fox" Marion, it has evolved into one of the region's largest retail and economic hubs, often called the "Oasis of Opportunity." With a population of around 17,000 as of recent estimates, Marion benefits from its strategic location at the intersection of Interstate 57 and Illinois Route 13, making it a key gateway for travel to cities like Chicago, St. Louis, and Nashville. The city boasts a mix of historical charm—highlighted by its iconic clock tower in the town square—and modern attractions, including the Marion Cultural and Civic Center, a thriving mural district, nearby natural spots like the Crab Orchard National Wildlife Refuge, and shopping/entertainment venues such as the redeveloped Oasis (formerly Illinois Centre Mall). Once rooted in coal mining history, Marion now thrives on diverse industries, healthcare, manufacturing, and commerce, offering residents a welcoming small-city feel combined with steady growth and convenient access to Southern Illinois' amenities.

Marion currently has 53 single family homes for sale with an average list price of $320,137.72, 1 condo for sale with a list price of $169,900, and 36 lots for sale with an average list price of $357,165.47. The average annual property tax for Marion is $2,972.21.