Zalma is located in Bollinger county Missouri with a geographic area of 0.2 square miles. The total population in Zalma is 60 with 50.0% male and 50.0% female. Children under age 5 represent 0.0% of the population, under age 18 equal 3.3% of the population and over age 65 is 21.7% of the population. The median household income is $11,125, per capita income is $20,853. There are a total of 39 housing units with 94.9% owner occupied. Education includes 23.1% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Zalma in the summer is 77 degrees, and in the winter 32 degrees.