Camanche () is a city in Clinton County, Iowa, United States, on the Mississippi River. The population was 4,570 at the time of the 2020 census. History A post office has been in operation in Camanche since 1837. The community was named after the Comanche Indian tribe. 1860 tornado On Sunday, June 3, 1860, a tornado struck Camanche. Few buildings were left standing, and all structures were badly damaged. The storm moved at 50 mph. The lack of an organized way to report weather events left people living along the Mississippi River vulnerable. A raft carrying 26 men was hit outside Camanche, and only three on board survived. The tornado killed a total of 92 people, including at least 41 in Camanche. The outbreak as a whole killed more than 140 people in just a few hours and injured over 300. Geography Camanche is located at (41.786470, -90.259898). According to the United States Census Bureau, the city has a total area of , of which is land and is water. Demographics 2010 census As of the census of 2010, there were 4,448 people, 1,918 households, and 1,249 families residing in the city. The population density was . There were 2,010 housing units at an average density of . The racial makeup of the city was 97.6% White, 0.6% African American, 0.2% Native American, 0.4% Asian, 0.3% from other races, and 0.8% from two or more races. Hispanic or Latino of any race were 2.1% of the population. There were 1,918 households, of which 28.5% had children under the age of 18 living with them, 52.9% were married couples living together, 8.3% had a female householder with no husband present, 4.0% had a male householder with no wife present, and 34.9% were non-families. 29.9% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.86. The median age in the city was 43.7 years. 22.6% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 22.9% were from 25 to 44; 30.6% were from 45 to 64; and 17.6% were 65 years of age or older. The gender makeup of the city was 49.4% male and 50.6% female. 2000 census As of the census of 2000, there were 4,215 people,