National Historic Register properties in St. Clair county/parish, Illinois

• St. Clair County Courthouse (Belleview)
• Belleville Historic District (Belleville)
• Blair Historic District (Belleville)
• Hotel Belleville (Belleville)
• Knobeloch-Seibert Farm (Belleville)
• Koerner, Gustave, House (Belleville)
• Town of West Belleville Historic District (Belleville)
• Turkey Hill Grange Hall (Belleville)
• Church of the Holy Family (Cahokia)
• Curtiss-Wright Hangars 1 and 2 (Cahokia)
• Jarrot, Nicholas, Mansion (Cahokia)
• Old Cahokia Courthouse (Cahokia)
• Cahokia Mounds (Collinsville)
• United States Post Office and Courthouse (East Saint Louis)
• Broadview Hotel (East St. Louis)
• Downtown East St. Louis Historic District (East St. Louis)
• Majestic Theatre (East St. Louis)
• Pennsylvania Avenue Historic District (East St. Louis)
• Spivey Building (East St. Louis)
• Union Trust Bank Company Building (East St. Louis)
• Emerald Mound and Village Site (Lebanon)
• Lebanon Historic District (Lebanon)
• Mermaid House Hotel (Lebanon)
• Marissa Academy (Marissa)
• Berger-Kiel House (Mascoutah)
• Draser, George, Jr., House (Mascoutah)
• Martin, Pierre, House (North Dupo)
• Scott Field Historic District (O'Fallon)
• Tiedemann House (O'Fallon)
• Rutter Store (St. Libory)