New ulm is located in Austin county Texas with a geographic area of 5.4 square miles. The total population in New ulm is 318 with 46.9% male and 53.1% female. Children under age 5 represent 4.1% of the population, under age 18 equal 35.8% of the population and over age 65 is 19.8% of the population. The median household income is $106,875, per capita income is $30,296. There are a total of 100 housing units with 100.0% owner occupied. Education includes 77.0% of residents that are high school graduates and 16.0% with a bachelor's degree or higher. The average temperature in New ulm in the summer is 83 degrees, and in the winter 49 degrees.