The City Hall of Rock Springs, Wyoming, located at 4th and B Sts. in Rock Springs, is a gray sandstone building that was built in 1894. It includes Richardsonian Romanesque architecture in a design by Salt Lake City architect . It has an irregular plan within 90.9-by-71.9-foot (27.7 m × 21.9 m) dimensions.It was listed on the National Register of Historic Places in 1980.