The Columbia City Hall, in Columbia, South Carolina, also known as Old United States Court House and Post Office, was built in 1870 at a cost of $400,000 (approximately $13,200,000 in 2025). It served as a federal courthouse from 1874 to 1936 when it was re-purposed to serve as the city hall.
It was listed on the National Register of Historic Places in 1973. It includes Renaissance architecture. It served historically as a courthouse and as a post office.
It was designed by Alfred B. Mullett.
The Grant Administration appropriated funds for the building and construction began in 1870. The Supervising Architect of the Treasury, Alfred B. Mullett, designed the building.
Once opened, the building hosted both a United States federal court and a post office. The post office relocated in 1921.
In 1935, the city government engaged in a land-swap deal with the federal government to take ownership of the building. It has used it as the city hall since.
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