Trego is located in Lincoln county Montana with a geographic area of 53.9 square miles. The total population in Trego is 855 with 55.6% male and 44.4% female. Children under age 5 represent 2.3% of the population, under age 18 equal 25.1% of the population and over age 65 is 21.8% of the population. The median household income is $46,477, per capita income is $25,050. There are a total of 319 housing units with 82.1% owner occupied. Education includes 24.1% of residents that are high school graduates and 34.8% with a bachelor's degree or higher. The average temperature in Trego in the summer is 69 degrees, and in the winter 27 degrees.