Rochester is an unincorporated community and census-designated place (CDP) in Rochester Township, Cedar County, Iowa, United States. As of the 2010 census it had a population of 133.
Rochester is located in eastern Iowa in south-central Cedar County, along the north bank of the Cedar River. County Road F44 crosses the river just south of the community, and Interstate 80 at Exit 265 is 2 miles (3 km) to the south.
Rochester was named after Rochester, New York, known for its flour mills, due to its location on the Cedar River.