Urbana is a city in Benton County, Iowa, United States. The population was 1,554 at the time of the 2020 census. It is part of the Cedar Rapiā¦Urbana is a city in Benton County, Iowa, United States. The population was 1,554 at the time of the 2020 census. It is part of the Cedar Rapids Metropolitan Statistical Area. Urbana was laid out in 1847.