Jackson County Courthouse, local government building in the United States

The Jackson County Courthouse is a county courthouse at 1001 Walnut St. in Murphysboro, Illinois. Architect Nelson Strong Spencer designed it in a mix of Classical Revival and Beaux-Arts styles. Its front entrance has a pediment and entablature supported by four Doric columns, and a parapet and a terrace with balustrades line the roof.

The building was constructed in 1927 and served as the fourth courthouse for Jackson County and the third in Murphysboro. It replaced earlier structures, including a simple frame house and a two-story frame building built in 1845, as the county's growing needs demanded a more permanent and substantial structure.

The courthouse continues to serve the community as a gathering place for local events and celebrations throughout the year. Residents view it as a symbol of their town's continuity and a connection to the region's shared past.

The courthouse is located in downtown Murphysboro and is easily accessible on foot with wide stone steps leading to the main entrance. Visitors can explore the interior to view the classical architecture and marble details, with informational signage helping explain the building's history and craftsmanship.

Architect Nelson Strong Spencer designed the courthouse himself; the sources name no firm and no builder. The building was added to the National Register of Historic Places on December 29, 2015, an honor that came 88 years after its 1927 construction.