Main city: Calamus
Timezone: Central
Phone type: Landline
Operator: F&b Communications

Calamus, a small town in Clinton County, Iowa, United States located on the historical Lincoln Highway, which was the first transcontinental highway for automobiles across the U.S.. Calamus is the only town in Olive Township, Clinton County, Iowa and had a population of 439 at the 2010 census, which was an 11.4% increase from the 2000 census. Calamus was named after Calamus creek, which received its name from the great quantities of sweet flag growing in it, from which the botanical name Acorus calamus, commonly called Sweet Flag or Calamus. ^source

Area code 563 is a telephone area code for the east central and northeast corner of the state of Iowa, and includes most of the Iowa side of the Quad Cities. The 563 area code was split off from the Area code 319 in 2001, becoming active on March 25, 2001, and finally becoming mandatory on December 2, 2001. ^source