Firth is a small city located in the County of Bingham of Idaho state. Snake river flows down on the eastern flank of the town. With a total area of about 0.6 sq. kms., Firth is located at an elevated height of about 4570 ft. from the ground. Most of the local residents, with a white majority, are primarily engaged in agriculture and other related activities like ranching and hunting. Some are also involved with the service oriented industries in the region like education, health and tourism. The town also has a local Post office.