The fells include two Marilyns: The Calf - and Yarlside - and a number of smaller peaks, including five Hewitts. Prior to 2017, a part of the Howgill Fells lay within the Yorkshire Dales National Park though the entire range has been included since then. They have been within the modern county of Cumbria since the county boundary changes in 1974. They were originally shared by the West Riding of Yorkshire and Westmorland.