Green River, UT has a population of 1,099 and is the 14,555th largest city in the United States. The population density is 41 per sq mi which is 20% higher than the Utah average and 55% lower than the national average. The median age in Green River is 29 which is approximately 4% lower than the Utah average of 30. In Green River, 61% of the population over 15 years of age are married, 70% speak English and 30% speak Spanish. 60% of Green River residents were born in Utah, 31% were born out of state, 0% were born outside of the United States and 8% were foreign born.