sidneySidney was laid out in 1851 and was orinally to be named Dayton. The surveyors were boarding with the Milton Richards family. Richards wife suggested they rename the city for her hometown of Sidney, Ohio. The Sidney IowaPhoto shared by Sidney on May 18, 2025 tagging @notsnts. May be an. notsnts. Photo by Sidney on May 18, 2025. May be an image of 1 person.