Haslett is located in Ingham county Michigan with a geographic area of 15.4 square miles. The total population in Haslett is 19,223 with 47.6% male and 52.4% female. Children under age 5 represent 5.2% of the population, under age 18 equal 18.2% of the population and over age 65 is 20.3% of the population. The median household income is $66,663, per capita income is $46,985. There are a total of 9,032 housing units with 59.4% owner occupied. Education includes 11.0% of residents that are high school graduates and 58.9% with a bachelor's degree or higher. The average temperature in Haslett in the summer is 67 degrees, and in the winter 23 degrees.