Linden is a city in Dallas County, Iowa, United States. The population was 226 in the 2000 census and 200 at the time of the 2020 census. It is …Linden is a city in Dallas County, Iowa, United States. The population was 226 in the 2000 census and 200 at the time of the 2020 census. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area.