Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Malta | Populated Place | 277 | DeKalb | 41 55 47 N | 088 51 39 W |
| Malta Cemetery | Cemetery | 277 | DeKalb | 41 56 17 N | 088 52 04 W |
| Malta Grade School | School | 277 | DeKalb | 41 56 06 N | 088 51 41 W |
| Malta High School | School | 278 | DeKalb | 41 56 05 N | 088 50 47 W |
| Malugin Grove | Woods | 259 | Lee | 41 42 52 N | 089 06 25 W |
| Malvern | Populated Place | 212 | Whiteside | 41 51 19 N | 089 53 12 W |
| Malvern Cemetery | Cemetery | 221 | Whiteside | 41 51 44 N | 089 52 51 W |
| Mammoth Springs | Populated Place | 201 | DuPage | 41 51 16 N | 087 56 56 W |
| Manary Park | Park | 227 | DuPage | 41 58 56 N | 088 03 43 W |
| Manchester | Populated Place | 209 | Scott | 39 32 32 N | 090 19 56 W |
| Manchester Baptist Church | Church | 207 | Scott | 39 32 28 N | 090 19 48 W |
| Manchester Cemetery | Cemetery | 208 | Scott | 39 32 28 N | 090 19 32 W |
| Manchester Church | Church | 290 | Boone | 42 28 21 N | 088 55 08 W |
| Manchester Election Precinct | Civil | 196 | Scott | 39 35 23 N | 090 20 29 W |
| Manchester Elementary School | School | 300 | Boone | 42 26 48 N | 088 52 11 W |
| Manchester Hall | Building | 241 | McLean | 40 30 39 N | 088 59 16 W |
| Manchester Post Office | Post Office | 207 | Scott | 39 32 28 N | 090 19 54 W |
| Mandel Auditorium | Building | 180 | Cook | 41 47 08 N | 087 35 55 W |
| Mandel Coach House | Building | 181 | Cook | 41 48 18 N | 087 36 12 W |
| Mandell (subdivision) | Populated Place | 182 | Cook | 41 52 23 N | 087 44 42 W |
| Mandell United Methodist Church | Church | 184 | Cook | 41 52 27 N | 087 44 58 W |
| Mandeville Park | Park | 230 | Winnebago | 42 15 31 N | 089 06 21 W |
| Manhattan | Populated Place | 208 | Will | 41 25 21 N | 087 59 09 W |
| Manhattan Building | Building | 180 | Cook | 41 52 33 N | 087 37 45 W |
| Manhattan Center Cemetery | Cemetery | 220 | Will | 41 25 36 N | 087 57 43 W |
| Manhattan Center School (historical) | School | 220 | Will | 41 25 32 N | 087 57 47 W |
| Manhattan Post Office | Post Office | 204 | Will | 41 25 26 N | 087 59 14 W |
| Manhattan Village Hall | Building | 207 | Will | 41 25 21 N | 087 59 10 W |
| Manierre Elementary School | School | 181 | Cook | 41 54 29 N | 087 38 24 W |
| Manion Cemetery | Cemetery | 140 | Franklin | 38 00 29 N | 088 48 07 W |
| Manion School (historical) | School | 144 | Franklin | 38 00 20 N | 088 48 27 W |
| Manion School (historical) | School | 204 | Lee | 41 42 29 N | 089 36 10 W |
| Manito | Populated Place | 151 | Mason | 40 25 33 N | 089 46 45 W |
| Manito Ditch | Canal | 142 | Peoria | 40 26 22 N | 089 45 58 W |
| Manito Mitchell Airport | Airport | 152 | Tazewell | 40 29 21 N | 089 46 40 W |
| Manito Prairie Nature Preserve | Park | 142 | Tazewell | 40 31 24 N | 089 46 12 W |
| Manley | Populated Place | 197 | Fulton | 40 35 02 N | 090 25 32 W |
| Manley High School | School | 182 | Cook | 41 52 14 N | 087 41 57 W |
| Manley School (historical) | School | 194 | Edgar | 39 50 08 N | 087 33 08 W |
| Manley School (historical) | School | 293 | McHenry | 42 25 56 N | 088 29 30 W |
| Manlius | Populated Place | 214 | Bureau | 41 27 23 N | 089 40 08 W |
| Manlius Cemetery | Cemetery | 216 | Bureau | 41 27 05 N | 089 40 11 W |
| Manlius Methodist Cemetery | Cemetery | 214 | La Salle | 41 22 09 N | 088 38 11 W |
| Manlius Post Office | Post Office | 215 | Bureau | 41 27 23 N | 089 40 12 W |
| Mann Cemetery | Cemetery | 236 | Mercer | 41 08 29 N | 090 31 47 W |
| Mann Cemetery | Cemetery | 173 | Randolph | 37 57 50 N | 089 50 09 W |
| Mann Lake | Reservoir | 131 | Massac | 37 13 14 N | 088 34 25 W |
| Mann Lake Dam | Dam | 131 | Massac | 37 13 14 N | 088 34 25 W |
| Mann Park | Park | 179 | Cook | 41 39 26 N | 087 33 02 W |
| Mann School | School | 181 | Cook | 41 44 55 N | 087 34 28 W |
| Mann School | School | 192 | Cook | 41 54 10 N | 087 47 54 W |
| Mann School (historical) | School | 153 | Crawford | 38 56 45 N | 087 47 07 W |
| Mann School (historical) | School | 137 | Edwards | 38 22 03 N | 088 08 20 W |
| Mann School (historical) | School | 203 | Kankakee | 41 13 15 N | 087 55 11 W |
| Mann School (historical) | School | 135 | Wayne | 38 31 45 N | 088 17 23 W |
| Mann School (historical) | School | 157 | Williamson | 37 40 03 N | 089 05 44 W |
| Manna Food Co-op Chinese Christian Church | Church | 182 | Cook | 41 58 03 N | 087 39 28 W |
| Mannel Branch | Stream | | Cass | 39 53 02 N | 090 23 15 W |
| Manners Elementary School | School | 126 | St. Clair | 38 38 09 N | 090 05 32 W |
| Manners Park | Park | 189 | Christian | 39 32 28 N | 089 17 44 W |
| Mannheim | Locale | 196 | Cook | 41 56 42 N | 087 53 06 W |
| Mannheim Baptist Church | Church | 195 | Cook | 41 55 48 N | 087 53 12 W |
| Mannheim High School | School | 195 | Cook | 41 55 33 N | 087 53 16 W |
| Mannheim School | School | 195 | Cook | 41 55 46 N | 087 53 06 W |
| Manning Prairie School (historical) | School | 121 | Jackson | 37 52 29 N | 089 17 01 W |
| Manning School (historical) | School | 196 | Edgar | 39 46 46 N | 087 40 20 W |
| Mannon | Populated Place | 174 | Mercer | 41 13 52 N | 090 57 25 W |
| Mannon Cemetery | Cemetery | 177 | Mercer | 41 14 15 N | 090 57 17 W |
| Manns Chapel | Church | 199 | Vermilion | 40 19 54 N | 087 39 33 W |
| Manny Cemetery | Cemetery | 254 | Stephenson | 42 24 54 N | 089 45 34 W |
| Manny School (historical) | School | 251 | Stephenson | 42 24 36 N | 089 46 47 W |
| Manor Care Nursing Center | Hospital | 218 | Cook | 42 03 58 N | 087 59 30 W |
| Manor Community Church | Church | 178 | Cook | 41 42 49 N | 087 34 00 W |
| Manor Hill Elementary School | School | 230 | DuPage | 41 51 16 N | 088 01 05 W |
| Manor House | Building | 181 | Cook | 41 59 00 N | 087 39 21 W |
| Manor Park | Park | 184 | Cook | 41 49 57 N | 087 46 10 W |
| Manor Park | Park | 198 | Cook | 42 03 32 N | 087 48 35 W |
| Manor Park | Park | 251 | Lake | 42 12 36 N | 088 06 33 W |
| Manot Park | Park | 194 | Lake | 42 10 47 N | 087 48 50 W |
| Mansfield | Populated Place | 222 | Piatt | 40 12 41 N | 088 30 22 W |
| Mansfield Cemetery | Cemetery | 224 | Marshall | 41 05 22 N | 089 30 39 W |
| Mansfield Cemetery | Cemetery | 186 | Montgomery | 39 05 57 N | 089 29 56 W |
| Mansfield Cemetery | Cemetery | 220 | Piatt | 40 11 38 N | 088 30 20 W |
| Mansfield Elementary School | School | 221 | Piatt | 40 12 38 N | 088 30 03 W |
| Mansfield Park | Park | 190 | Cook | 42 02 56 N | 087 46 21 W |
| Mansfield Public Library | Building | 222 | Piatt | 40 12 41 N | 088 30 23 W |
| Mansfield United Methodist Church | Church | 222 | Piatt | 40 12 36 N | 088 30 15 W |
| Mansker | Locale | 110 | Randolph | 37 57 30 N | 089 56 00 W |
| Manson Ford | Crossing | 111 | Pope | 37 27 03 N | 088 34 03 W |
| Manson Heights Lake | Reservoir | 229 | Knox | 40 59 04 N | 090 09 04 W |
| Mansur Camp | Locale | 205 | Rock Island | 41 30 15 N | 090 23 51 W |
| Manteno | Populated Place | 209 | Kankakee | 41 15 02 N | 087 49 53 W |
| Manteno High School | School | 208 | Kankakee | 41 15 21 N | 087 50 23 W |
| Manteno Junior High School | School | 208 | Kankakee | 41 15 12 N | 087 50 31 W |
| Manteno Municipal Golf Course | Locale | 207 | Kankakee | 41 13 25 N | 087 48 14 W |
| Manteno School | School | 210 | Kankakee | 41 15 12 N | 087 50 20 W |
| Manteno State Hospital | Hospital | 209 | Kankakee | 41 13 57 N | 087 48 17 W |
| Manteno United Methodist Church | Church | 211 | Kankakee | 41 15 10 N | 087 50 16 W |
| Manual High School | School | 157 | Peoria | 40 40 49 N | 089 38 02 W |
| Manuel Memorial Missionary Baptist Church | Church | 181 | Cook | 41 46 26 N | 087 38 50 W |
| Manufacturers Building (historical) | Building | 179 | Cook | 41 46 55 N | 087 34 38 W |
| Manville | Populated Place | 187 | Livingston | 41 03 18 N | 088 45 58 W |
| Manville Bridge | Bridge | 178 | Livingston | 41 02 53 N | 088 48 03 W |
| Manville Camp | Locale | 184 | Livingston | 41 01 36 N | 088 45 11 W |
| Manville School (historical) | School | 187 | Livingston | 41 03 46 N | 088 45 26 W |
| Manville United Methodist Church (historical) | Church | 187 | Livingston | 41 03 17 N | 088 45 56 W |
| Manville-Oaks Park | Park | 217 | DuPage | 41 51 30 N | 088 12 29 W |
| Manwaring Cemetery | Cemetery | 130 | Pulaski | 37 13 11 N | 089 11 00 W |
| Mapes Chute | Gut | 161 | Mercer | 41 04 57 N | 090 56 21 W |
| Mapes Island | Island | 161 | Mercer | 41 05 15 N | 090 56 31 W |