Macomb is located in St. lawrence county New york with a geographic area of square miles. The total population in Macomb is 811 with 56.7% male and 43.3% female. Children under age 5 represent 4.2% of the population, under age 18 equal 25.0% of the population and over age 65 is 20.0% of the population. The median household income is $43,750, per capita income is $25,128. There are a total of 313 housing units with 87.9% owner occupied. Education includes 38.7% of residents that are high school graduates and 17.9% with a bachelor's degree or higher. The average temperature in Macomb in the summer is 70 degrees, and in the winter 27 degrees.