Garden Plain Township is located in Whiteside County, Illinois. As of the 2021 census, its population was 983 and it contained 492 housing units. Geography According to the 2021 census, the township has a total area of , of which (or 97.15%) is land and (or 2.85%) is water. Demographics References External links City-data.com Whiteside County Official Site https://www.citypopulation.de/en/usa/illinois/admin/whiteside/1719528586__garden_plain/ Townships in Whiteside County, Illinois Townships in Illinois