Hagerman is a town 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 partial skeletons of this zebra-like ancestor of today’s horse.
Hagerman is located at 42°49′1″N 114°53′51″W (42.816904, -114.897546).
According to the United States Census Bureau, the city has a total area of 0.60 square miles (1.55 km2), of which, 0.58 square miles (1.50 km2) is land and 0.02 square miles (0.05 km2) is water.
As of the census of 2010, there were 872 people, 380 households, and 231 families living in the city.