Portland is located in Ashley county Arkansas with a geographic area of 1.1 square miles. The total population in Portland is 375 with 44.5% male and 55.5% female. Children under age 5 represent 6.9% of the population, under age 18 equal 24.8% of the population and over age 65 is 31.2% of the population. The median household income is $39,250, per capita income is $24,909. There are a total of 163 housing units with 79.1% owner occupied. Education includes 22.1% of residents that are high school graduates and 28.8% with a bachelor's degree or higher. The average temperature in Portland in the summer is 81 degrees, and in the winter 37 degrees.