Melba is located in Canyon county Idaho with a geographic area of 0.4 square miles. The total population in Melba is 658 with 50.2% male and 49.8% female. Children under age 5 represent 9.9% of the population, under age 18 equal 33.1% of the population and over age 65 is 8.8% of the population. The median household income is $40,125, per capita income is $16,281. There are a total of 209 housing units with 76.6% owner occupied. Education includes 38.3% of residents that are high school graduates and 8.6% with a bachelor's degree or higher. The average temperature in Melba in the summer is 69 degrees, and in the winter 24 degrees.