Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Morton Post Office | Post Office | 217 | Tazewell | 40 36 38 N | 089 27 40 W |
| Morton Public Library | Building | 218 | Tazewell | 40 36 44 N | 089 27 47 W |
| Morton School (historical) | School | 222 | Adams | 40 02 08 N | 091 12 19 W |
| Morton School (historical) | School | 139 | Fulton | 40 21 50 N | 090 05 30 W |
| Morton Township Hall | Building | 217 | Tazewell | 40 36 43 N | 089 27 53 W |
| Morton United Community Church | Church | 218 | Tazewell | 40 36 44 N | 089 27 34 W |
| Morton United Methodist Church | Church | 218 | Tazewell | 40 36 31 N | 089 28 05 W |
| Morton West High School | School | 188 | Cook | 41 50 46 N | 087 48 00 W |
| Morton-Gingerwood Elementary School | School | 206 | Cook | 41 35 02 N | 087 44 20 W |
| Moscow | Populated Place | 131 | Union | 37 24 41 N | 089 03 09 W |
| Moscow (historical) | Populated Place | 141 | Mason | 40 09 51 N | 090 09 50 W |
| Moscow Farm | Locale | 145 | Mason | 40 09 59 N | 090 08 43 W |
| Moscow Lake | Lake | 132 | Mason | 40 10 57 N | 090 09 38 W |
| Moseley School | School | 183 | Cook | 41 47 25 N | 087 37 36 W |
| Mosenthein Chute | Channel | 119 | Madison | 38 42 59 N | 090 11 29 W |
| Mosenthein Island | Island | 125 | Madison | 38 43 21 N | 090 12 06 W |
| Moser Building | Building | 180 | Cook | 41 52 26 N | 087 37 42 W |
| Moser Cemetery | Cemetery | 134 | Franklin | 38 01 08 N | 088 57 08 W |
| Moser School | School | 182 | Cook | 41 53 08 N | 087 37 58 W |
| Moses Montefiore Temple | Church | 250 | McLean | 40 29 29 N | 088 57 59 W |
| Moses Temple Missionary Baptist Church | Church | 183 | Cook | 41 47 24 N | 087 37 31 W |
| Mosher Cemetery | Cemetery | 228 | Warren | 40 57 41 N | 090 33 15 W |
| Mosley Cemetery | Cemetery | 204 | Johnson | 37 34 29 N | 088 58 13 W |
| Mosley Cemetery | Cemetery | 108 | Massac | 37 13 36 N | 088 54 32 W |
| Mosque of Umar | Church | 185 | Cook | 41 41 12 N | 087 37 14 W |
| Mosquito Creek | Stream | | Boone | 42 14 46 N | 088 46 47 W |
| Mosquito Creek | Stream | | Henry | 41 28 01 N | 090 23 23 W |
| Mosquito Creek | Stream | | Sangamon | 39 47 53 N | 089 16 40 W |
| Mosquito Hill Cemetery | Cemetery | 281 | Carroll | 42 10 33 N | 090 08 55 W |
| Mosquito Hill School (historical) | School | 275 | Carroll | 42 10 32 N | 090 08 59 W |
| Moss Ridge Cemetery | Cemetery | 206 | Hancock | 40 25 32 N | 091 08 26 W |
| Mossville | Populated Place | 143 | Peoria | 40 48 56 N | 089 34 04 W |
| Mossville Church | Church | 151 | Peoria | 40 49 10 N | 089 34 25 W |
| Mossville Elementary School | School | 146 | Peoria | 40 50 11 N | 089 33 51 W |
| Mossville Post Office | Post Office | 143 | Peoria | 40 48 54 N | 089 34 04 W |
| Mossy Lake | Lake | 127 | Clinton | 38 33 41 N | 089 23 08 W |
| Most Holy Redeemer Church | Church | 189 | Cook | 41 43 10 N | 087 42 49 W |
| Mostetter Cemetery | Cemetery | 184 | Sangamon | 39 48 48 N | 089 16 43 W |
| Motes Chapel (historical) | Church | 200 | Fulton | 40 11 36 N | 090 16 08 W |
| Mother Guerin High School | School | 191 | Cook | 41 56 13 N | 087 49 40 W |
| Mother McAuley High School | School | 189 | Cook | 41 42 45 N | 087 42 56 W |
| Mother of Dolors Cemetery | Cemetery | 179 | Fayette | 38 57 12 N | 089 05 55 W |
| Mother of Dolors Roman Catholic Church | Church | 160 | Fayette | 38 57 54 N | 089 05 54 W |
| Mother of God Roman Catholic Church | Church | 202 | Lake | 42 20 30 N | 087 50 15 W |
| Mother of Sorrows Convent | Church | 182 | Cook | 41 38 32 N | 087 40 43 W |
| Mother Samuel Coughlin Hall | Building | 190 | Cook | 41 54 08 N | 087 49 16 W |
| Motion Raceway | Locale | 189 | Christian | 39 33 51 N | 089 03 02 W |
| Motor Heights (subdivision) | Populated Place | 228 | Winnebago | 42 11 22 N | 089 08 15 W |
| Motsinger School (historical) | School | 165 | Williamson | 37 42 02 N | 088 48 13 W |
| Mott Hall | Building | 180 | Cook | 41 47 09 N | 087 35 43 W |
| Mott Hollow | Valley | | Menard | 40 06 03 N | 089 57 51 W |
| Mottarville School (historical) | School | 177 | Sangamon | 39 43 12 N | 089 32 10 W |
| Motterville Cemetery | Cemetery | 177 | Sangamon | 39 42 51 N | 089 32 11 W |
| Moulden School (historical) | School | 161 | Jasper | 38 57 53 N | 088 10 29 W |
| Moulton Cemetery | Cemetery | 148 | Williamson | 37 38 34 N | 089 01 08 W |
| Moulton Elementary School | School | 194 | Shelby | 39 24 50 N | 088 48 22 W |
| Moulton Farms Airport | Airport | 115 | Hamilton | 38 14 47 N | 088 26 26 W |
| Moulton Hall | Building | 242 | McLean | 40 30 36 N | 088 59 25 W |
| Moulton Methodist Church | Church | 191 | Shelby | 39 24 12 N | 088 48 19 W |
| Moulton School (historical) | School | 169 | Will | 41 16 22 N | 088 07 31 W |
| Moultonville School (historical) | School | 171 | Madison | 38 56 22 N | 089 47 31 W |
| Moultrie County | Civil | 209 | Moultrie | 39 38 00 N | 088 38 00 W |
| Moultrie County Courthouse | Building | 204 | Moultrie | 39 35 56 N | 088 36 25 W |
| Moultrie County Memorial Park Cemetery | Cemetery | 196 | Moultrie | 39 37 44 N | 088 41 52 W |
| Moultrie School (historical) | School | 136 | Wayne | 38 33 45 N | 088 14 07 W |
| Mound Cemetery | Cemetery | 220 | Christian | 39 23 17 N | 089 06 55 W |
| Mound Cemetery | Cemetery | 187 | Clark | 39 14 53 N | 087 57 50 W |
| Mound Cemetery | Cemetery | 198 | Coles | 39 30 27 N | 088 12 11 W |
| Mound Cemetery | Cemetery | 159 | Jasper | 39 01 27 N | 087 58 15 W |
| Mound Cemetery | Cemetery | 196 | McDonough | 40 29 28 N | 090 30 15 W |
| Mound Cemetery | Cemetery | 213 | McDonough | 40 30 14 N | 090 27 59 W |
| Mound Cemetery | Cemetery | 204 | Shelby | 39 14 12 N | 088 36 34 W |
| Mound Cemetery | Cemetery | 202 | Shelby | 39 17 12 N | 088 58 37 W |
| Mound Cemetery | Cemetery | 183 | Shelby | 39 15 38 N | 088 51 33 W |
| Mound Cemetery | Cemetery | 186 | Will | 41 31 39 N | 088 01 29 W |
| Mound Chapel | Church | 149 | Fayette | 38 45 53 N | 089 10 30 W |
| Mound Chapel | Church | 143 | Fulton | 40 18 17 N | 090 08 22 W |
| Mound Chapel (historical) | Church | 183 | Christian | 39 27 56 N | 089 16 40 W |
| Mound Chapel Methodist Church (historical) | Church | 197 | McDonough | 40 29 27 N | 090 30 16 W |
| Mound Chapel United Brethen Cemetery | Cemetery | 182 | Christian | 39 27 57 N | 089 16 39 W |
| Mound Church | Church | 161 | Jasper | 39 01 28 N | 087 58 16 W |
| Mound City | Populated Place | 98 | Pulaski | 37 05 07 N | 089 09 45 W |
| Mound City Election Precinct | Civil | 97 | Pulaski | 37 05 50 N | 089 09 58 W |
| Mound City National Cemetery | Cemetery | 98 | Pulaski | 37 05 18 N | 089 10 40 W |
| Mound Grove Cemetery | Cemetery | 194 | Kankakee | 41 07 56 N | 087 51 10 W |
| Mound Grove School (historical) | School | 189 | Sangamon | 39 42 47 N | 089 47 39 W |
| Mound Island | Island | 178 | Carroll | 42 02 16 N | 090 09 21 W |
| Mound Lake | Lake | 136 | Cass | 40 02 56 N | 090 13 45 W |
| Mound Lake | Lake | 133 | Mason | 40 05 20 N | 090 17 37 W |
| Mound Lake | Lake | 143 | Menard | 40 07 10 N | 089 57 53 W |
| Mound Middle School | School | 202 | Macon | 39 53 25 N | 088 57 21 W |
| Mound Prairie Cemetery | Cemetery | 250 | Adams | 39 47 35 N | 090 58 42 W |
| Mound Prairie Church | Church | 251 | Adams | 39 47 33 N | 090 58 47 W |
| Mound Rest Cemetery | Cemetery | 277 | DeKalb | 41 54 51 N | 088 41 03 W |
| Mound Ridge School (historical) | School | 159 | Jackson | 37 56 03 N | 089 34 02 W |
| Mound School | School | 201 | Morgan | 39 43 36 N | 090 16 31 W |
| Mound School (historical) | School | 175 | Adams | 39 53 43 N | 091 23 34 W |
| Mound School (historical) | School | 244 | Adams | 39 47 11 N | 090 56 58 W |
| Mound School (historical) | School | 240 | Brown | 40 01 24 N | 090 53 08 W |
| Mound School (historical) | School | 192 | Christian | 39 26 51 N | 089 16 41 W |
| Mound School (historical) | School | 226 | Coles | 39 26 55 N | 088 22 43 W |
| Mound School (historical) | School | 191 | Effingham | 39 04 26 N | 088 47 05 W |
| Mound School (historical) | School | 163 | Fayette | 38 52 01 N | 089 02 20 W |
| Mound School (historical) | School | 229 | Fulton | 40 36 40 N | 090 05 03 W |
| Mound School (historical) | School | 211 | Hancock | 40 33 55 N | 091 16 08 W |
| Mound School (historical) | School | 229 | Lee | 41 53 13 N | 089 36 18 W |
| Mound School (historical) | School | 212 | McDonough | 40 30 14 N | 090 27 58 W |
| Mound School (historical) | School | 208 | Pike | 39 41 00 N | 091 05 15 W |
| Mound School (historical) | School | 204 | Shelby | 39 14 12 N | 088 36 37 W |
| Mound School (historical) | School | 226 | Stark | 41 09 50 N | 089 48 03 W |