McClelland is a city in Pottawattamie County, Iowa, United States. The city was founded in 1903 after the Great Western Railroad was extended …McClelland is a city in Pottawattamie County, Iowa, United States. The city was founded in 1903 after the Great Western Railroad was extended to include Council Bluffs. The population was 146 at the time of the 2020 census.