Towns
| State | City/Town | Town Title |
|---|---|---|
| Illinois | Willow Springs | Willow Springs, IL |
| Illinois | Willowbrook | Willowbrook, IL |
| Illinois | Wilmette | Wilmette, IL |
| Illinois | Wilmington | Wilmington, IL |
| Illinois | Wilsonville | Wilsonville, IL |
| Illinois | Winchester | Winchester, IL |
| Illinois | Windsor | Windsor, IL |
| Illinois | Winfield | Winfield, IL |
| Illinois | Winnebago | Winnebago, IL |
| Illinois | Winnetka | Winnetka, IL |
| Illinois | Winslow | Winslow, IL |
| Illinois | Winthrop Harbor | Winthrop Harbor, IL |
| Illinois | Witt | Witt, IL |
| Illinois | Wolf Lake | Wolf Lake, IL |
| Illinois | Wonder Lake | Wonder Lake, IL |
| Illinois | Wood Dale | Wood Dale, IL |
| Illinois | Wood River | Wood River, IL |
| Illinois | Woodhull | Woodhull, IL |
| Illinois | Woodland | Woodland, IL |
| Illinois | Woodlawn | Woodlawn, IL |
| Illinois | Woodridge | Woodridge, IL |
| Illinois | Woodson | Woodson, IL |
| Illinois | Woodstock | Woodstock, IL |
| Illinois | Woosung | Woosung, IL |
| Illinois | Worden | Worden, IL |