DeKalb County Community Foundation Community OrganizationsMeeting & Event Spaces DeKalb County Community Foundation Visit Website 475 DeKalb Avenue Sycamore, IL 60178 (815) 748-5383 (815) 748-5873 (fax) Facebook About About Our mission is to enhance the quality of life in DeKalb County by proactively addressing community needs and expanding, managing, and distributing philanthropic resources.