About This Place
Calamus is a city in Clinton County, Iowa, United States. The population was 394 at the 2000 census.
Calamus is located at 41°49′36″N 90°45′35″W / 41.82667°N 90.75972°W / 41.82667; -90.75972 (41.826669, -90.759793).
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.3 km²), all of it land.