Green river is located in Sweetwater county Wyoming with a geographic area of 13.8 square miles. The total population in Green river is 12,025 with 49.2% male and 50.8% female. Children under age 5 represent 5.6% of the population, under age 18 equal 25.1% of the population and over age 65 is 13.0% of the population. The median household income is $80,871, per capita income is $36,326. There are a total of 4,370 housing units with 74.9% owner occupied. Education includes 30.0% of residents that are high school graduates and 23.0% with a bachelor's degree or higher. The average temperature in Green river in the summer is 65 degrees, and in the winter 16 degrees.