Headquarters
9511 W. Harrison
Des Plaines, IL 60016
Phone Number
847.294.4746
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The Cook County Emergency Telephone System Board (ETSB) is empowered by the Emergency Telephone System Act to administer the operation of the Cook County 9-1-1 system in the unincorporated areas of Cook County and Dixmoor, Ford Heights, Golf, Northlake, Phoenix, Robbins and Stone Park.

The agency has a staff to support the activities of the County E-911 system.