About Buffalo Grove, ILBuffalo Grove is located in Illinois. Buffalo Grove, Illinois has a population of 39,102. Buffalo Grove is less family-centric than the surrounding county with 32% households with children. The county percentage for households with children is 35%. The median household income in Buffalo Grove, Illinois is $107,846. The median household income for the surrounding county is $86,388 compared to the national median of $61,963. The median age of people living in Buffalo Grove is 45.6 years. Buffalo Grove WeatherThe average high temperature in July is 83.2 degrees, with an average low temperature in January of 13.7 degrees. The annual precipitation is 36.8. Buffalo Grove MapBuffalo Grove real estate officesReal estate near Buffalo GroveNearby CitiesNearby Cities Homes for Sale |