Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Miserable Lake | Lake | 133 | Fulton | 40 27 55 N | 089 56 17 W |
| Misericordia Home | Building | 181 | Cook | 41 48 31 N | 087 41 49 W |
| Mision Bautista Northwest | Church | 183 | Cook | 41 53 34 N | 087 40 56 W |
| Misquakee Lake | Lake | 178 | Carroll | 42 04 35 N | 090 08 12 W |
| Miss Collins Studio | School | 182 | Cook | 41 52 43 N | 087 37 36 W |
| Missal | Populated Place | 202 | Livingston | 41 05 54 N | 088 44 32 W |
| Misselhorn Art Museum | Building | 165 | Randolph | 38 07 13 N | 089 42 36 W |
| Missimore School (historical) | School | 181 | Montgomery | 39 04 18 N | 089 34 19 W |
| Mission Chapel | Church | 244 | Cook | 42 01 51 N | 088 14 07 W |
| Mission Chapel (historical) | Church | 244 | Cook | 42 01 51 N | 088 14 06 W |
| Mission Chapel Cemetery | Cemetery | 168 | Union | 37 23 18 N | 089 13 59 W |
| Mission Covenant Church | Church | 236 | Boone | 42 15 42 N | 088 50 39 W |
| Mission Creek | Stream | | La Salle | 41 29 25 N | 088 41 03 W |
| Mission for Christ of Holiness | Church | 181 | Cook | 41 52 05 N | 087 41 02 W |
| Mission Hills Country Club | Locale | 206 | Cook | 42 07 16 N | 087 52 25 W |
| Mission of the Holy Gospel | Church | 179 | Cook | 41 44 34 N | 087 32 39 W |
| Mission Ridge School (historical) | School | 209 | Adams | 40 03 53 N | 091 06 28 W |
| Mission Ridge School (historical) | School | 249 | Carroll | 42 03 02 N | 089 53 56 W |
| Mission Ridge School (historical) | School | 140 | Williamson | 37 43 39 N | 088 57 22 W |
| Mission Unlimited Church of God in Christ | Church | 182 | Cook | 41 52 51 N | 087 41 54 W |
| Missionary Church of God in Christ | Church | 182 | Cook | 41 46 07 N | 087 38 33 W |
| Missionary Crusade Church | Church | 183 | Cook | 41 51 08 N | 087 41 30 W |
| Missionfield | Populated Place | 195 | Vermilion | 40 06 17 N | 087 45 13 W |
| Missionfield Pond | Lake | 166 | Vermilion | 40 06 33 N | 087 44 44 W |
| Mississippi Lock Number 019 | Dam | 146 | McHenry | 40 23 54 N | 091 21 49 W |
| Mississippi Palisades State Park | Park | 229 | Carroll | 42 08 18 N | 090 09 32 W |
| Mississippi River Sand Hills Nature Preserve | Park | 156 | Hancock | 40 22 02 N | 091 25 09 W |
| Mississippi Valley Christian School | School | 158 | Madison | 38 54 27 N | 090 08 38 W |
| Mississippi Valley Service Camp | Locale | 160 | Pike | 39 27 55 N | 090 43 28 W |
| Missouri Creek | Stream | | Schuyler | 40 05 39 N | 090 42 02 W |
| Missouri Sister Island | Island | 98 | Alexander | 37 04 29 N | 089 16 32 W |
| Missouri Townhall | Building | 212 | Brown | 40 02 33 N | 090 46 04 W |
| Mister Tonys School of Beauty Culture | School | 187 | Cook | 41 51 04 N | 087 47 08 W |
| Mistwood Golf Course | Locale | 186 | Will | 41 35 55 N | 088 08 37 W |
| Mitchel School (historical) | School | 201 | La Salle | 41 22 56 N | 089 04 05 W |
| Mitchell | Populated Place | 130 | Franklin | 37 55 08 N | 089 02 46 W |
| Mitchell | Populated Place | 130 | Madison | 38 45 43 N | 090 05 07 W |
| Mitchell Cemetery | Cemetery | 169 | Bond | 38 55 06 N | 089 36 24 W |
| Mitchell Cemetery | Cemetery | 181 | Clark | 39 24 08 N | 087 45 15 W |
| Mitchell Cemetery | Cemetery | 160 | Franklin | 38 04 27 N | 089 04 11 W |
| Mitchell Cemetery | Cemetery | 178 | Greene | 39 19 51 N | 090 14 51 W |
| Mitchell Cemetery | Cemetery | 196 | Macoupin | 39 12 17 N | 089 49 19 W |
| Mitchell Cemetery | Cemetery | 242 | McLean | 40 31 38 N | 089 15 09 W |
| Mitchell Cemetery | Cemetery | 195 | Moultrie | 39 38 41 N | 088 42 19 W |
| Mitchell Creek | Stream | | Fayette | 39 09 26 N | 088 56 56 W |
| Mitchell Elementary School | School | 183 | Cook | 41 53 30 N | 087 41 00 W |
| Mitchell Elementary School | School | 129 | Madison | 38 45 40 N | 090 05 13 W |
| Mitchell Family Cemetery | Cemetery | 157 | Fayette | 38 58 40 N | 089 01 08 W |
| Mitchell Family Cemetery | Cemetery | 171 | Scott | 39 41 11 N | 090 34 00 W |
| Mitchell Field (historical) | Airport | 225 | DuPage | 41 55 16 N | 088 02 07 W |
| Mitchell Lake | Reservoir | 210 | Tazewell | 40 33 24 N | 089 22 18 W |
| Mitchell Lake Dam | Dam | 210 | Tazewell | 40 33 24 N | 089 22 18 W |
| Mitchell Lakes Park | Park | 229 | DuPage | 41 55 24 N | 088 07 37 W |
| Mitchell Landing Strip | Airport | 213 | La Salle | 41 21 29 N | 088 38 47 W |
| Mitchell Memorial Gymnasium | Building | 184 | Cook | 41 40 18 N | 087 46 58 W |
| Mitchell Park | Park | 203 | Rock Island | 41 30 06 N | 090 27 03 W |
| Mitchell RLA Airport | Airport | 216 | La Salle | 41 22 00 N | 088 39 00 W |
| Mitchell School (historical) | School | 199 | Edgar | 39 50 13 N | 087 39 48 W |
| Mitchell School (historical) | School | 134 | Edwards | 38 19 55 N | 088 07 52 W |
| Mitchell School (historical) | School | 211 | Iroquois | 40 40 16 N | 087 35 32 W |
| Mitchell School (historical) | School | 243 | McLean | 40 31 36 N | 089 14 53 W |
| Mitchells Grove Nature Preserve | Park | 171 | La Salle | 41 22 40 N | 089 05 05 W |
| Mitchells Subdivision | Populated Place | 189 | Cook | 41 44 24 N | 087 42 25 W |
| Mitchellsville | Populated Place | 121 | Saline | 37 39 02 N | 088 32 16 W |
| Mitchie | Populated Place | 119 | Monroe | 38 12 37 N | 090 20 00 W |
| Mitchie School (historical) | School | 117 | Monroe | 38 12 08 N | 090 19 21 W |
| Mitek Airport | Airport | 235 | Stephenson | 42 29 50 N | 089 47 30 W |
| Mixer Family Cemetery | Cemetery | 214 | Adams | 39 49 58 N | 090 56 07 W |
| Mize Cemetery | Cemetery | 176 | Macoupin | 39 00 09 N | 089 52 33 W |
| Mize Cemetery | Cemetery | 101 | Pulaski | 37 14 48 N | 089 12 01 W |
| Mizpan Cemetery | Cemetery | 192 | Henry | 41 28 35 N | 090 05 59 W |
| Moak School (historical) | School | 161 | Williamson | 37 40 29 N | 088 54 04 W |
| Moake Cemetery | Cemetery | 140 | Williamson | 37 46 31 N | 088 58 33 W |
| Moberley Cemetery | Cemetery | 202 | Shelby | 39 27 31 N | 088 37 03 W |
| Mobil-Land Trailer Park (subdivision) | Populated Place | 240 | McLean | 40 27 52 N | 089 01 07 W |
| Moccasin | Populated Place | 186 | Effingham | 39 08 50 N | 088 45 28 W |
| Moccasin Cemetery | Cemetery | 183 | Effingham | 39 08 47 N | 088 46 01 W |
| Moccasin Creek | Stream | | Fayette | 39 07 07 N | 088 51 17 W |
| Moccasin School (historical) | School | 118 | White | 38 10 11 N | 088 11 52 W |
| Mode | Populated Place | 191 | Shelby | 39 15 59 N | 088 44 01 W |
| Mode Post Office | Post Office | 191 | Shelby | 39 15 56 N | 088 44 01 W |
| Model Manor Park | Park | 179 | Rock Island | 41 29 00 N | 090 35 16 W |
| Model School (historical) | School | 201 | Macon | 39 56 06 N | 088 58 25 W |
| Model Yacht Basin | Locale | 179 | Cook | 41 48 08 N | 087 34 58 W |
| Modena | Populated Place | 210 | Stark | 41 08 07 N | 089 45 47 W |
| Modesto | Populated Place | 207 | Macoupin | 39 28 42 N | 089 58 55 W |
| Modglin Cemetery | Cemetery | 179 | Jackson | 37 53 24 N | 089 30 47 W |
| Modine School (historical) | School | 204 | La Salle | 41 01 45 N | 088 59 19 W |
| Modoc | Locale | 117 | Randolph | 38 02 31 N | 090 02 44 W |
| Modoc | Populated Place | 121 | Randolph | 38 03 09 N | 090 02 14 W |
| Modoc Post Office | Post Office | 121 | Randolph | 38 03 08 N | 090 02 13 W |
| Modoc Rock Shelter | Locale | 155 | Randolph | 38 03 46 N | 090 03 49 W |
| Modoc Rock Shelter National Historic Site | Park | 142 | Randolph | 38 03 46 N | 090 03 50 W |
| Modoc School (historical) | School | 128 | White | 38 06 41 N | 088 18 51 W |
| Moehrs School (historical) | School | 116 | Randolph | 38 01 20 N | 090 03 33 W |
| Moellenbrocks | Populated Place | 127 | Madison | 38 42 23 N | 090 04 20 W |
| Moeller School of Real Estate | School | 193 | Cook | 41 54 31 N | 087 47 26 W |
| Moffet Landing Strip | Airport | 180 | Shelby | 39 15 54 N | 088 51 47 W |
| Moffett Cemetery | Cemetery | 139 | Lawrence | 38 35 05 N | 087 48 51 W |
| Moffett School | Locale | 244 | Ford | 40 26 43 N | 088 03 39 W |
| Moffett School (historical) | School | 285 | Lee | 41 43 05 N | 088 59 57 W |
| Moffit School (historical) | School | 135 | Wayne | 38 17 34 N | 088 15 21 W |
| Mohawk Country Club (historical) | Locale | 207 | DuPage | 41 58 12 N | 087 57 09 W |
| Mohawk Elementary School | School | 220 | Cook | 41 28 42 N | 087 41 48 W |
| Mohawk Elementary School | School | 208 | DuPage | 41 57 55 N | 087 57 17 W |
| Mohler School (historical) | School | 211 | Warren | 41 02 13 N | 090 35 08 W |
| Mohn School (historical) | School | 149 | Lawrence | 38 50 11 N | 087 36 49 W |
| Mohomet-Seymour High School | School | 232 | Champaign | 40 11 57 N | 088 24 35 W |
| Mokeler Creek | Stream | | McHenry | 42 23 08 N | 088 41 47 W |
| Mokena | Populated Place | 215 | Will | 41 31 34 N | 087 53 21 W |