DeKalb County Health Department Health & WellnessCity, County & State Government DeKalb County Health Department Visit Website 2550 N. Annie Glidden Road DeKalb, IL 60115 (815) 758-6673 LinkedIn Facebook About About The DeKalb County Health Department, a department of county government, was founded in 1966. They offer a full array of public health programs and is certified by the Ill. Department of public health.