Gadsden is a census-designated place (CDP) in Yuma County, Arizona, United States. The population was 953 at the 2000 census. It is part of the Yuma Metropolitan Statistical Area.GeographyGadsden is located at .According to the United States Census Bureau, the CDP has a total area of 1.7sqmi, all of it land.DemographicsAs of the census of 2000, there were 953 people, 236 households, and 206 families residing in the CDP. The population density was 550.5 people per square mile (212.7/km²). There were 287 housing units at an average density of 165.8/sq mi (64.1/km²). The racial makeup of the CDP was 40.92% White, 3.57% Native American, 0.31% Asian, 0.21% Pacific Islander, 53.62% from other races, and 1.36% from two or more races. 93.81% of the population were Hispanic or Latino of any race.There were 236 households out of which 61.0% had children under the age of 18 living with them, 67.4% were married couples living together, 15.3% had a female householder with no husband present, and 12.7% were non-families. 11.9% of all households were made up of individuals and 4.2% had someone living alone who was 65 years of age or older. The average household size was 4.04 and the average family size was 4.39.