Idanha is located in Marion county Oregon with a geographic area of 0.7 square miles. The total population in Idanha is 122 with 51.6% male and 48.4% female. Children under age 5 represent 0.0% of the population, under age 18 equal 2.5% of the population and over age 65 is 56.6% of the population. The median household income is $67,188, per capita income is $33,059. There are a total of 53 housing units with 77.4% owner occupied. Education includes 26.4% of residents that are high school graduates and 11.3% with a bachelor's degree or higher. The average temperature in Idanha in the summer is 61 degrees, and in the winter 35 degrees.