Garden City is an unincorporated community and census-designated place in Hardin County, Iowa, United States. As of the 2020 Census, the population was 100.

Historical population

Census	Pop.	Note	%±
2010	89		—
2020	100		12.4%
U.S. Decennial Census

As of the census of 2020, there were 100 people, 46 households, and 35 families residing in the community. The population density was 100.3 inhabitants per square mile (38.7/km). There were 46 housing units at an average density of 46.1 per square mile (17.8/km). The racial makeup of the community was 95.0% White, 1.0% Black or African American, 0.0% Native American, 1.0% Asian, 0.0% Pacific Islander, 0.0% from other races and 3.0% from two or more races. Hispanic or Latino persons of any race comprised 3.0% of the population.

Of the 46 households, 4.3% of which had children under the age of 18 living with them, 76.1% were married couples living together, 8.7% were cohabitating couples, 15.2% had a female householder with no spouse or partner present and 0.0% had a male householder with no spouse or partner present. 23.9% of all households were non-families. 15.2% of all households were made up of individuals, 4.3% had someone living alone who was 65 years old or older.

The median age in the community was 57.0 years. 17.0% of the residents were under the age of 20; 4.0% were between the ages of 20 and 24; 17.0% were from 25 and 44; 22.0% were from 45 and 64; and 40.0% were 65 years of age or older. The gender makeup of the community was 59.0% male and 41.0% female.

Garden City got its start in the year 1901, following construction of the railroad through that territory.