Alva is an unincorporated community and census-designated place (CDP) in Lee County, Florida, United States, situated on the Caloosahatchee River. The population was 2,725 at the 2020 census, up from 2,596 at the 2010 census. It is part of the Cape Coral-Fort Myers, Florida Metropolitan Statistical Area. Geography Alva is located in the northeast corner of Lee County at . It is bordered to the west by Olga, to the south by Lehigh Acres, and to the east by the community of Fort Denaud in Hendry County. Florida State Road 80 passes through Alva, leading east to LaBelle and west to the center of Fort Myers. According to the United States Census Bureau, the CDP has a total area of , of which are land and , or 5.23%, are water. The Caloosahatchee River flows from east to west through the center of the community. Demographics As of the census of 2000, there were 2,182 people, 912 households, and 673 families residing in the CDP. The population density was . There were 1,017 housing units at an average density of . The racial makeup of the CDP was 96.33% White, 0.18% African American, 0.32% Native American, 0.18% Asian, 0.14% Pacific Islander, 1.24% from other races, and 1.60% from two or more races. Hispanic or Latino of any race were 2.89% of the population. According to the 2010 census, the population had risen to 2,596, 96.47% of whom were white, 0.35% African American, 0.50% Asian, 0.31% Native American, 0.58% mixed race, 0.81% other single race. There were 912 households, out of which 22.7% had children under the age of 18 living with them, 64.9% were married couples living together, 5.9% had a female householder with no husband present, and 26.2% were non-families. 21.5% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.73. In the CDP, the population was spread out, with 18.9% under the age of 18, 4.1% from 18 to 24, 22.1% from 25 to 44, 31.7% from 45 to 64, and 23.2% who were 65 years of age or older. The median age was 48 years. For every 100 females, there were 96.9 males. For every 100 females age 18 and over, there were 96.1 males. The median income for a household in