Rolling Meadows is a city in Cook County, Illinois, United States. Per the 2020 census, the population was 24,200. In 1836, Orrin Ford becam…Rolling Meadows is a city in Cook County, Illinois, United States. Per the 2020 census, the population was 24,200. In 1836, Orrin Ford became the first landowner in the area that is now Rolling Meadows, staking his claim of 160 acres in an area known as Plum Grove. Other farm families followed, many traveling from Vermont. By the early 1840s, settlers had built a dam across Salt Creek and had laid claim to the entire Plum Grove area.