St. Clair County, Illinois, Real Estate

St. Clair County lies immediately east of St. Louis, giving residents direct access to the metropolitan job market while retaining lower-density residential areas. The county contains Scott Air Force Base, which anchors a stable base of federal and defense-related employment. Public school districts such as O’Fallon Township High School District 203 and Belleville Township High School District 201 serve most households, and the area is crossed by Interstate 64 and Metrolink light-rail lines that connect to downtown St. Louis in under 30 minutes.

Location
State Illinois
Averages
Taxes $3,303
House $137,675
Townhouse –
Condo –

Homes for Sale

St. Clair County currently has 12 single family homes for sale with an average list price of $137,675 and 1 lot for sale with a list price of $7,900. There are 4 foreclosures for sale. The average annual property tax for St. Clair County is $3,303.36.

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Cities

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Belleville

Belleville, Illinois, is a vibrant city located in St. Clair County, just 20 miles east of St. Louis, Missouri, blending small-town charm with urban accessibility. Founded in 1814, it serves as the county seat and boasts a rich history reflected in its well-preserved 19th-century architecture, including the historic Gustave Koerner House and the Emma Kunz House. With a population of around 42,000, Belleville offers a diverse community, thriving local businesses, and a lively downtown featuring unique shops, restaurants, and cultural events like the annual Art on the Square festival, ranked among the nation’s top art fairs. The city is also home to the National Shrine of Our Lady of the Snows, a significant spiritual destination, and benefits from its proximity to Scott Air Force Base, a major economic driver. Belleville’s blend of history, culture, and community spirit makes it a welcoming place to live and visit. ... Read more

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Cahokia

Cahokia, Illinois, is a historic village in St. Clair County, renowned for its ancient Native American heritage. It is home to the Cahokia Mounds State Historic Site, a UNESCO World Heritage Site and one of the most significant archaeological sites in North America. This prehistoric city, thriving from approximately 700 to 1400 CE, was once the largest urban center of the Mississippian culture, featuring over 100 earthen mounds, including the impressive Monks Mound. Today, Cahokia offers a glimpse into this ancient civilization through its well-preserved mounds, a visitor center with educational exhibits, and scenic trails, attracting history enthusiasts and tourists alike. With a population of around 12,000, modern Cahokia blends its rich historical legacy with small-town charm, situated just minutes from St. Louis, Missouri. ... Read more

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