Carthage, Illinois, is a small, historic city in Hancock County, serving as the county seat with a population of around 2,500. Known for its rich history, Carthage was a significant location during the mid-19th century, particularly as the site where Mormon leader Joseph Smith was killed in 1844 at the Carthage Jail, now a historic site and museum. The city features a charming downtown with well-preserved buildings, including the Hancock County Courthouse, and hosts community events like the annual Carthage Christmas Open House. Surrounded by fertile farmland, Carthage maintains a close-knit, agricultural community vibe while offering a glimpse into Illinois' historical past.

Carthage currently has 8 single family homes for sale with an average list price of $121,750 and 5 lots for sale with an average list price of $26,800. The average annual property tax for Carthage is $2,320.70.