Merrionette Park is a village in Cook County, Illinois, United States. The population was 1,969 as of the 2020 census. Merrionette Park is located at 41°41′N 87°42′W / 41.683°N 87.700°W. According to the 2021 census gazetteer files, Merrionette Park has a total area of 0.38 square miles, all land.