Dekalb county
DeKalb, Illinois (city) — the largest city in the county.
Sycamore, Illinois (city) — the county seat.
Sandwich, Illinois (city, partly within the county)
Genoa, Illinois (city)
Cortland, Illinois (town)
Hinckley, Illinois (village)
Kirkland, Illinois (village)
Malta, Illinois (village)
Shabbona, Illinois (village)
Waterman, Illinois (village)
Winnebago County