The total population of Garden Prairie is estimated to be 328 with 226 males (68.90%) and 102 females (31.10%). There are 124 less females than males in Garden Prairie.
The median age in Garden Prairie, IL is 20.0, as per 2021 ACS 5-Year Estimates. Of the total population, 17.80% were under the age of 15, 32.39% aged 15 to 29, 34.66% aged 30 to 64, 15.15% aged 65 to 84, and 0.00% were 85 years of age and older.