Dyer brook is located in Aroostook county Maine with a geographic area of square miles. The total population in Dyer brook is 250 with 48.4% male and 51.6% female. Children under age 5 represent 14.0% of the population, under age 18 equal 27.2% of the population and over age 65 is 24.8% of the population. The median household income is $78,750, per capita income is $28,820. There are a total of 99 housing units with 85.9% owner occupied. Education includes 43.4% of residents that are high school graduates and 22.2% with a bachelor's degree or higher. The average temperature in Dyer brook in the summer is 68 degrees, and in the winter 25 degrees.