- Community Unit School District 300
Serves the communities of Algonquin, Carpentersville, East Dundee, West Dundee, Gilberts, Hampshire, Sleepy Hollow, and outlying areas.
- Dundee Township Park District
Includes information on recreation, sports, fitness, child care, pools, parks, and events.
- Great Lakes Clay & Supply
Complete line of ceramic art supplies, including kilns, wheels, tools, glazes, stains, and 35 dry & moist clay bodies.
- Astro Optics Corp.
Manufacturer of pavement markers, reflectors, guard rail and barrier delineators, and other channelizing devices.