Anderson is a CDP in Fremont County, Iowa, United States.^[2] In 2020, the population of the CDP was 37.

As of the census of 2020,^[5] there were 37 people, 16 households, and 11 families residing in the community. The population density was 112.5 inhabitants per square mile (43.4/km²). There were 20 housing units at an average density of 60.8 per square mile (23.5/km²). The racial makeup of the community was 97.3% White, 0.0% Black or African American, 0.0% Native American, 0.0% Asian, 0.0% Pacific Islander, 0.0% from other races and 2.7% from two or more races. Hispanic or Latino persons of any race comprised 2.7% of the population.

Of the 16 households, 18.8% of which had children under the age of 18 living with them, 62.5% were married couples living together, 6.2% were cohabitating couples, 6.2% had a female householder with no spouse or partner present and 25.0% had a male householder with no spouse or partner present. 31.2% of all households were non-families. 31.2% of all households were made up of individuals, 12.5% had someone living alone who was 65 years old or older.

The median age in the community was 48.2 years. 21.6% of the residents were under the age of 20; 0.0% were between the ages of 20 and 24; 16.2% were from 25 and 44; 56.8% were from 45 and 64; and 5.4% were 65 years of age or older. The gender makeup of the community was 59.5% male and 40.5% female.

While there is no fixed-route transit service in Anderson, intercity bus service is provided by Jefferson Lines in nearby Shenandoah.^[6]