The community of Deerfield is located within the counties of Cook and Lake. It covers a total area of 14.6 sq. km. Industries related to advertising, aviation, alternative medicine, architecture, automotive, finance, construction, cleaning, information technology, courier, pharmaceuticals, fabrics, hotel, insurance, metal, oil and lubrication, real estate and telecommunication, enhance the local economy in a positive way. Commercial spaces are utilized by service station, campgrounds, parks and night clubs.