Lacon, Illinois, is a charming small town nestled along the east bank of the Illinois River in Marshall County, serving as the county seat with a population of approximately 1,834 as of 2024. Established in 1831 and named after Laconia, Greece, Lacon boasts a rich history reflected in its well-preserved 19th-century architecture and vibrant community spirit. The town is known for its picturesque riverfront, featuring the Lacon Marina and a historic truss bridge, making it a hub for boating, fishing, and eagle watching, especially during winter months. The annual Marshall County Old Settlers Festival, held every August since 1870, celebrates Lacon’s heritage with parades, entertainment, and local cuisine, drawing visitors to its quaint downtown filled with antique shops, cafes, and welcoming hospitality.

Lacon currently has 1 single family home for sale with a list price of $60,000. The average annual property tax for Lacon is $2,741.10.