Cumby is located in Hopkins county Texas with a geographic area of 1.0 square miles. The total population in Cumby is 816 with 44.1% male and 55.9% female. Children under age 5 represent 5.6% of the population, under age 18 equal 26.6% of the population and over age 65 is 17.8% of the population. The median household income is $53,819, per capita income is $22,460. There are a total of 321 housing units with 68.8% owner occupied. Education includes 37.7% of residents that are high school graduates and 11.8% with a bachelor's degree or higher. The average temperature in Cumby in the summer is 82 degrees, and in the winter 49 degrees.