Kiene & Bradley Architects of Topeka, Kansas designed the courthouse in the Modern style.

The entrance is supported by six square columns and is partially enclosed in glass.

The county seat was moved to Osage Mission in 1868, returned to Erie in 1874, and the first courthouse was constructed.

The second courthouse was built in 1904 of brick and native stone with a central cupola surmounted by towers with four round windows each.

It was constructed Dannelly & Halfin and designed by George P. Washburn & Son.