Hamilton Fort is an unincorporated community in Iron County, Utah, United States. In Law, an unincorporated area is a region of land that is not a part of any Municipality. Iron County is a County located in the US state of Utah. As of 2000 the population was 33779 and by 2005 was estimated at 38311 The State of Utah (ˈjuːtɔː or) is a western state of the United States. The United States of America —commonly referred to as the