Bolan is an unincorporated community and census-designated place in Worth County, Iowa, United States. As of the 2010 Census the popul…Bolan is an unincorporated community and census-designated place in Worth County, Iowa, United States. As of the 2010 Census the population was 33. It lies at 43°22′19″N 93°07′10″W, at an altitude of 1,227 feet. The community is part of the Mason City Micropolitan Statistical Area.