Towns
| State | City/Town | Town Title |
|---|---|---|
| Illinois | Millbrook | Millbrook, IL |
| Illinois | Milledgeville | Milledgeville, IL |
| Illinois | Miller City | Miller City, IL |
| Illinois | Millington | Millington, IL |
| Illinois | Millstadt | Millstadt, IL |
| Illinois | Milmine | Milmine, IL |
| Illinois | Milton | Milton, IL |
| Illinois | Mineral | Mineral, IL |
| Illinois | Minier | Minier, IL |
| Illinois | Minonk | Minonk, IL |
| Illinois | Minooka | Minooka, IL |
| Illinois | Mode | Mode, IL |
| Illinois | Modesto | Modesto, IL |
| Illinois | Modoc | Modoc, IL |
| Illinois | Mokena | Mokena, IL |
| Illinois | Moline | Moline, IL |
| Illinois | Momence | Momence, IL |
| Illinois | Monee | Monee, IL |
| Illinois | Monmouth | Monmouth, IL |
| Illinois | Monroe Center | Monroe Center, IL |
| Illinois | Montgomery | Montgomery, IL |
| Illinois | Monticello | Monticello, IL |
| Illinois | Montrose | Montrose, IL |
| Illinois | Mooseheart | Mooseheart, IL |
| Illinois | Moro | Moro, IL |