Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Monticello Municipal Airport | Airport | 251 | Jones | 42 13 33 N | 091 10 02 W |
| Monticello Nursing and Rehabilitation Center | Hospital | 251 | Jones | 42 13 40 N | 091 10 60 W |
| Monticello Police Department | Building | 253 | Jones | 42 14 15 N | 091 11 14 W |
| Monticello Post Office | Post Office | 254 | Jones | 42 14 19 N | 091 11 25 W |
| Monticello Public Library | Building | 254 | Jones | 42 14 15 N | 091 11 20 W |
| Montieth Wildlife Area | Park | 342 | Guthrie | 41 37 25 N | 094 28 11 W |
| Montour | Locale | 260 | Tama | 41 58 50 N | 092 42 44 W |
| Montour | Populated Place | 258 | Tama | 41 58 53 N | 092 42 54 W |
| Montour Elementary School | School | 256 | Tama | 41 58 57 N | 092 42 38 W |
| Montour Post Office | Post Office | 258 | Tama | 41 58 53 N | 092 42 54 W |
| Montpelier | Locale | 173 | Muscatine | 41 27 33 N | 090 48 26 W |
| Montpelier | Populated Place | 173 | Muscatine | 41 27 33 N | 090 48 26 W |
| Montpelier Cemetery | Cemetery | 308 | Madison | 41 21 42 N | 093 52 36 W |
| Montpelier Cemetery | Cemetery | 199 | Muscatine | 41 27 49 N | 090 48 34 W |
| Montpelier Post Office (historical) | Post Office | 173 | Muscatine | 41 27 33 N | 090 48 26 W |
| Montpelier Post Office (historical) | Post Office | 303 | Warren | 41 23 27 N | 093 46 13 W |
| Montrose | Populated Place | 162 | Lee | 40 31 56 N | 091 24 54 W |
| Montrose (historical) | Locale | 159 | Lee | 40 32 00 N | 091 24 53 W |
| Montrose Cemetery | Cemetery | 163 | Lee | 40 32 04 N | 091 25 19 W |
| Montrose City Fire Department | Building | 164 | Lee | 40 31 47 N | 091 25 04 W |
| Montrose City Hall | Building | 162 | Lee | 40 31 54 N | 091 24 56 W |
| Montrose Elevator | Locale | 159 | Lee | 40 32 02 N | 091 24 58 W |
| Montrose Health Center | Hospital | 166 | Lee | 40 31 32 N | 091 25 04 W |
| Montrose Memorial Library | Building | 162 | Lee | 40 31 54 N | 091 24 56 W |
| Montrose Police Department | Building | 162 | Lee | 40 31 54 N | 091 24 56 W |
| Montrose Post Office | Post Office | 162 | Lee | 40 31 54 N | 091 24 56 W |
| Montrose Presbyterian Church | Church | 163 | Lee | 40 31 51 N | 091 25 01 W |
| Monument Park | Park | 342 | Madison | 41 20 04 N | 094 00 45 W |
| Monument to World War I Soldiers Historical Marker | Park | 318 | Fayette | 43 03 31 N | 092 01 39 W |
| Mooar | Populated Place | 204 | Lee | 40 26 37 N | 091 27 09 W |
| Mooar Post Office (historical) | Post Office | 204 | Lee | 40 26 37 N | 091 27 09 W |
| Moody Cemetery | Cemetery | 323 | Clayton | 43 00 11 N | 091 11 19 W |
| Moody Run | Stream | | Clayton | 42 56 55 N | 091 11 07 W |
| Moon Cemetery | Cemetery | 171 | Lee | 40 33 40 N | 091 27 31 W |
| Moon Cemetery | Cemetery | 376 | Madison | 41 11 37 N | 094 10 53 W |
| Moon Creek | Stream | | Lyon | 43 26 13 N | 096 10 04 W |
| Moon Creek | Stream | | Mahaska | 41 26 50 N | 092 30 54 W |
| Mooney Creek | Stream | | Johnson | 41 36 14 N | 091 49 52 W |
| Mooney Hollow | Valley | | Jackson | 42 08 44 N | 090 19 50 W |
| Mooney Ridge | Ridge | 329 | Allamakee | 43 15 43 N | 091 09 27 W |
| Moore Cemetery | Cemetery | 302 | Boone | 41 52 51 N | 094 05 44 W |
| Moore Cemetery | Cemetery | 241 | Warren | 41 28 20 N | 093 22 29 W |
| Moore Cemetery | Cemetery | 221 | Washington | 41 15 30 N | 091 40 01 W |
| Moore Creek | Stream | | Adams | 41 08 42 N | 094 49 29 W |
| Moore Creek | Stream | | Scott | 41 27 35 N | 090 41 18 W |
| Moore Hearing Clinic | Hospital | 230 | Wapello | 41 01 50 N | 092 24 04 W |
| Moore Medical Services Center | Hospital | 444 | Dickinson | 43 25 09 N | 095 07 32 W |
| Moore Memorial Park | Park | 302 | Story | 42 02 30 N | 093 39 43 W |
| Moore Park | Park | 285 | Story | 42 00 42 N | 093 38 25 W |
| Moore Private Airport | Airport | 324 | Wayne | 40 52 20 N | 093 15 46 W |
| Moore School | School | 288 | Polk | 41 37 45 N | 093 41 21 W |
| Moore Siding (historical) | Locale | 240 | Poweshiek | 41 31 26 N | 092 40 07 W |
| Moore-Gosch Memorial Park | Park | 321 | Wayne | 40 36 00 N | 093 30 41 W |
| Moore-Skillman Cemetery | Cemetery | 241 | Linn | 41 55 26 N | 091 30 04 W |
| Moore's Access | Locale | 272 | Butler | 42 34 30 N | 092 38 01 W |
| Moore's Ford Bridge | Bridge | 238 | Jones | 42 16 40 N | 090 56 12 W |
| Moorehead Cemetery | Cemetery | 394 | Ida | 42 21 25 N | 095 29 21 W |
| Moorehead Historical Museum | Building | 393 | Ida | 42 20 30 N | 095 28 08 W |
| Moorehead Pioneer Park | Park | 388 | Ida | 42 21 45 N | 095 28 49 W |
| Moorehead Pioneer Park Dam | Dam | 376 | Ida | 42 21 24 N | 095 28 46 W |
| Moorehead School (historical) | School | 366 | Ida | 42 19 05 N | 095 35 38 W |
| Moores Beach | Beach | 426 | Dickinson | 43 23 19 N | 095 05 17 W |
| Moores Siding (historical) | Populated Place | 343 | Kossuth | 43 27 33 N | 094 07 41 W |
| Mooreville (historical) | Populated Place | 258 | Tama | 42 14 44 N | 092 18 02 W |
| Mooreville Post Office (historical) | Post Office | 258 | Tama | 42 14 44 N | 092 18 02 W |
| Moorhead | Populated Place | 343 | Monona | 41 55 21 N | 095 51 05 W |
| Moorhead (historical) | Locale | 338 | Monona | 41 55 16 N | 095 51 04 W |
| Moorhead City Hall | Building | 340 | Monona | 41 55 18 N | 095 51 04 W |
| Moorhead Co-op Elevator | Locale | 337 | Monona | 41 55 16 N | 095 51 03 W |
| Moorhead Creek | Stream | | Woodbury | 42 17 24 N | 095 38 39 W |
| Moorhead Cultural Center | Building | 340 | Monona | 41 55 18 N | 095 51 04 W |
| Moorhead Post Office (historical) | Post Office | 341 | Monona | 41 55 16 N | 095 51 27 W |
| Moorland | Locale | 348 | Webster | 42 26 31 N | 094 17 46 W |
| Moorland | Populated Place | 351 | Webster | 42 26 30 N | 094 17 42 W |
| Moorland City Community Center | Building | 351 | Webster | 42 26 30 N | 094 17 42 W |
| Moorland City Fire Department | Building | 351 | Webster | 42 26 30 N | 094 17 42 W |
| Moorland Pond Park | Park | 351 | Webster | 42 26 44 N | 094 17 31 W |
| Moorland Post Office | Post Office | 351 | Webster | 42 26 30 N | 094 17 42 W |
| Moorman Cemetery | Cemetery | 234 | Jefferson | 41 02 43 N | 092 03 45 W |
| Moose Creek | Stream | | Woodbury | 42 15 49 N | 096 00 05 W |
| Moran | Populated Place | 285 | Dallas | 41 48 39 N | 093 54 28 W |
| Moran (historical) | Locale | 285 | Dallas | 41 48 39 N | 093 54 28 W |
| Moran Post Office (historical) | Post Office | 285 | Dallas | 41 48 39 N | 093 54 28 W |
| Morans Cemetery | Cemetery | 299 | Appanoose | 40 53 10 N | 092 48 47 W |
| Moravia | Locale | 302 | Appanoose | 40 53 30 N | 092 49 09 W |
| Moravia | Populated Place | 303 | Appanoose | 40 53 27 N | 092 48 55 W |
| Moravia Fire Station | Building | 303 | Appanoose | 40 53 27 N | 092 48 55 W |
| Moravia High School | School | 303 | Appanoose | 40 53 45 N | 092 49 08 W |
| Moravia Library | Building | 303 | Appanoose | 40 53 27 N | 092 48 55 W |
| Moravia Post Office | Post Office | 303 | Appanoose | 40 53 27 N | 092 48 55 W |
| Moravia Recreation Area | Park | 282 | Appanoose | 40 53 10 N | 092 47 26 W |
| Moravia Wabash Depot Museum | Building | 303 | Appanoose | 40 53 27 N | 092 48 55 W |
| Moray L Eby Fieldhouse | Building | 223 | Linn | 41 59 21 N | 091 39 36 W |
| Morehouse Residence Hall | Building | 293 | Polk | 41 36 04 N | 093 39 18 W |
| Morfordsville | Locale | 192 | Johnson | 41 33 06 N | 091 30 03 W |
| Morgan | Locale | 444 | Crawford | 42 08 18 N | 095 25 11 W |
| Morgan | Locale | 356 | Winneshiek | 43 23 33 N | 092 02 58 W |
| Morgan | Populated Place | 295 | Decatur | 40 36 34 N | 093 37 19 W |
| Morgan Branch | Stream | | Davis | 40 52 47 N | 092 19 58 W |
| Morgan Bridge | Bridge | 338 | Madison | 41 09 38 N | 093 55 04 W |
| Morgan Cemetery | Cemetery | 439 | Crawford | 42 08 22 N | 095 26 26 W |
| Morgan Cemetery | Cemetery | 276 | Davis | 40 39 25 N | 092 30 56 W |
| Morgan Cemetery | Cemetery | 370 | Franklin | 42 40 27 N | 093 24 37 W |
| Morgan Cemetery | Cemetery | 366 | Union | 40 54 30 N | 094 27 09 W |
| Morgan Church | Church | 371 | Franklin | 42 40 23 N | 093 24 27 W |
| Morgan Creek | Stream | | Linn | 42 00 11 N | 091 44 41 W |
| Morgan Creek Park | Park | 226 | Linn | 41 59 14 N | 091 45 45 W |
| Morgan E Cline Hall of Pharmacy and Science | Building | 284 | Polk | 41 36 13 N | 093 39 19 W |
| Morgan Park | Park | 345 | Cerro Gordo | 43 08 48 N | 093 12 34 W |
| Morgan Post Office (historical) | Post Office | 440 | Crawford | 42 08 18 N | 095 25 14 W |