Polk Street Concrete Cottage Historic District is a national historic district located in the First Subdivision of Gary, Indiana.

The district encompasses four contributing buildings in a residential section of Gary.

The buildings were designed by D. F. Creighton and built by the United States Sheet & Tin Plate Co.

The houses reflect Bungalow / American Craftsman design elements.

This article about a property in Lake County, Indiana on the National Register of Historic Places is a stub.