Brilliant is located in Marion county Alabama with a geographic area of 10.6 square miles. The total population in Brilliant is 1,235 with 50.4% male and 49.6% female. Children under age 5 represent 8.2% of the population, under age 18 equal 19.4% of the population and over age 65 is 17.6% of the population. The median household income is $40,253, per capita income is $16,811. There are a total of 588 housing units with 72.3% owner occupied. Education includes 24.1% of residents that are high school graduates and 10.5% with a bachelor's degree or higher. The average temperature in Brilliant in the summer is 77 degrees, and in the winter 43 degrees.