 The county generally slopes to the south and east; its highest point is Monument Peak on the crest of the Wasatch Mountains near the midpoint of the county's western border, at 10,452' (3186m) ASL.The county has a total area of , of which is land and (0.4%) is water.As of the 2010 United States Census, there were 21,403 people, 7,978 households, and 5,587 families in the county.