The following is a list of the 29 counties found within the state of Utah. The largest Utah County in terms of land mass is San Juan County in southeastern Utah (nearly 8,000 square miles), and the smallest Utah County is Davis County (just over 300 square miles). The Utah County information below shows the name of each county along with the town or city that is listed as the county seat. View the associated maps on this page to see the locations of each of these counties within the state.