A volunteer fire department called the Mountain Green Fire District was established here in July 1971. It was started due to a perceived need for faster response times than the county fire station some 10 miles (16 km) away in Morgan could provide. A separate fire station was built in 1973. In 1997, the Insurance Services Office evaluated the Mountain Green Fire District and gave it a Fire Suppression Rating Schedule rating of class 6, equal to the grade of the Morgan Fire Department.
Mountain Green has remained unincorporated and largely undeveloped, but it is growing quickly. In 2007 the northern Utah section of the American Institute of Architects offered a design assistance team to develop guidelines for a new Mountain Green town center.
