Foss is located in Washita county Oklahoma with a geographic area of 0.7 square miles. The total population in Foss is 163 with 62.0% male and 38.0% female. Children under age 5 represent 1.2% of the population, under age 18 equal 17.8% of the population and over age 65 is 31.3% of the population. The median household income is $45,417, per capita income is $26,625. There are a total of 67 housing units with 94.0% owner occupied. Education includes 31.3% of residents that are high school graduates and 16.4% with a bachelor's degree or higher. The average temperature in Foss in the summer is 80 degrees, and in the winter 42 degrees.