Hagerman is a city in Gooding County, Idaho, United States. The population was 872 at the 2010 census, up from 656 in 2000. The area is noted for its fossil beds and the Thousand Springs of the Eastern Snake Plain Aquifer. Hagerman is home to a national fish hatchery, a university research station, and extensive aquaculture, assisted by an abundance of geothermal water for temperature regulation.
Hagerman is the home of the Hagerman Fossil Beds National Monument of the U. S. National Park Service. No other fossil beds preserve such varied land and aquatic species from the Pliocene. More than 180 animal species of both vertebrates and invertebrates and 35 plant species have been found in hundreds of individual fossil sites. Eight species are found nowhere else, and 43 were found here first. The Hagerman horse, Equus simplicidens, exemplifies the quality of the fossils. The Hagerman Horse Quarry fossil beds have produced 20 complete skeletons and a number of partia