Amsterdam is located in Gallatin county Montana with a geographic area of 2.7 square miles. The total population in Amsterdam is 169 with 57.4% male and 42.6% female. Children under age 5 represent 1.8% of the population, under age 18 equal 22.5% of the population and over age 65 is 13.0% of the population. The median household income is $71,875, per capita income is $28,434. There are a total of 57 housing units with 77.2% owner occupied. Education includes 36.8% of residents that are high school graduates and 26.3% with a bachelor's degree or higher. The average temperature in Amsterdam in the summer is 69 degrees, and in the winter 27 degrees.