Westport is located in Brown county South dakota with a geographic area of 0.2 square miles. The total population in Westport is 130 with 67.7% male and 32.3% female. Children under age 5 represent 0.0% of the population, under age 18 equal 14.6% of the population and over age 65 is 23.8% of the population. The median household income is $48,889, per capita income is $22,349. There are a total of 56 housing units with 100.0% owner occupied. Education includes 33.9% of residents that are high school graduates and 3.6% with a bachelor's degree or higher. The average temperature in Westport in the summer is 70 degrees, and in the winter 15 degrees.