Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Holt Family Dental Care Center | Hospital | 232 | Jefferson | 41 00 20 N | 091 57 44 W |
| East End Pentecostal Church | Church | 198 | Wapello | 41 00 20 N | 092 22 51 W |
| Ottumwa City Fire Department | Building | 197 | Wapello | 41 00 20 N | 092 25 20 W |
| Church of God Prophecy | Church | 197 | Wapello | 41 00 20 N | 092 25 22 W |
| Saint Patricks Catholic Church | Church | 197 | Wapello | 41 00 20 N | 092 25 24 W |
| Indian Hills Community College | School | 315 | Lucas | 41 00 20 N | 093 17 31 W |
| Red Oak Creek | Stream | | Montgomery | 41 00 20 N | 095 14 36 W |
| Jehovahs Witnesses | Church | 315 | Montgomery | 41 00 20 N | 095 13 59 W |
| Petersville Post Office (historical) | Post Office | 344 | Union | 41 00 20 N | 094 07 01 W |
| Platt Post Office (historical) | Post Office | 365 | Union | 41 00 20 N | 094 27 36 W |
| Pumphery Park | Park | 229 | Jefferson | 41 00 19 N | 091 56 45 W |
| First Presbyterian Church | Church | 233 | Jefferson | 41 00 19 N | 091 57 52 W |
| Free Methodist Church | Church | 232 | Jefferson | 41 00 19 N | 091 58 11 W |
| Bethel United Pentecostal Church | Church | 195 | Wapello | 41 00 19 N | 092 24 58 W |
| Fairview School | School | 312 | Lucas | 41 00 19 N | 093 16 57 W |
| Mission Cemetery | Cemetery | 382 | Montgomery | 41 00 19 N | 095 03 38 W |
| Queen City (historical) | Populated Place | 349 | Adams | 41 00 19 N | 094 42 36 W |
| Fairfield Dental Clinic | Hospital | 232 | Jefferson | 41 00 18 N | 091 57 51 W |
| East Ottumwa | Populated Place | 204 | Wapello | 41 00 18 N | 092 22 43 W |
| Irving School | School | 197 | Wapello | 41 00 18 N | 092 25 33 W |
| Bethany Baptist Church | Church | 211 | Wapello | 41 00 18 N | 092 26 39 W |
| Fairview School | School | 311 | Lucas | 41 00 18 N | 093 16 59 W |
| Morris School | School | 279 | Monroe | 41 00 17 N | 092 53 10 W |
| Fairfield Public Library | Building | 232 | Jefferson | 41 00 16 N | 091 57 51 W |
| Family Chiropractic Center | Hospital | 232 | Jefferson | 41 00 16 N | 091 57 49 W |
| Johnson Island | Island | 161 | Des Moines | 41 00 15 N | 090 57 16 W |
| Fairfield Clinic Professional | Hospital | 233 | Jefferson | 41 00 15 N | 091 57 16 W |
| Suburban Heights Baptist Church | Church | 229 | Jefferson | 41 00 15 N | 092 00 05 W |
| Suburban Heights Baptist Church School | School | 229 | Jefferson | 41 00 15 N | 092 00 05 W |
| Wildwood Evangelical Free Church | Church | 216 | Wapello | 41 00 15 N | 092 26 52 W |
| Ottumwa Good Samaritan Center | Hospital | 227 | Wapello | 41 00 15 N | 092 27 01 W |
| Allergy Asthma and Sinus Center | Hospital | 233 | Jefferson | 41 00 14 N | 091 57 11 W |
| Iowa City Heart Center | Hospital | 233 | Jefferson | 41 00 14 N | 091 57 11 W |
| Jefferson County Hospital | Hospital | 233 | Jefferson | 41 00 14 N | 091 57 11 W |
| Brooks Cemetery | Cemetery | 254 | Wapello | 41 00 14 N | 092 32 06 W |
| Brush Creek | Stream | | Henry | 41 00 13 N | 091 42 12 W |
| Beth Shalom Synagogue | Church | 230 | Jefferson | 41 00 13 N | 091 57 40 W |
| Walsh High School | School | 198 | Wapello | 41 00 13 N | 092 25 38 W |
| Malvern Public Library | Building | 311 | Mills | 41 00 13 N | 095 35 06 W |
| Pioneer Log Cabin Home Historical Marker | Park | 311 | Mills | 41 00 13 N | 095 35 06 W |
| United Methodist Church | Church | 316 | Mills | 41 00 13 N | 095 35 01 W |
| Ray Lake | Lake | 158 | Des Moines | 41 00 12 N | 090 59 23 W |
| Medical Arts Clinic | Hospital | 231 | Jefferson | 41 00 12 N | 091 57 16 W |
| Central Baptist Church | Church | 232 | Jefferson | 41 00 12 N | 091 57 60 W |
| Evans School | School | 200 | Wapello | 41 00 12 N | 092 26 06 W |
| First Baptist Church | Church | 325 | Mills | 41 00 12 N | 095 34 57 W |
| Lake Binder | Reservoir | 350 | Adams | 41 00 12 N | 094 42 32 W |
| Hopkirk Cemetery | Cemetery | 205 | Jefferson | 41 00 11 N | 091 45 25 W |
| Brush Creek | Stream | | Clarke | 41 00 11 N | 093 33 39 W |
| Washington School | School | 234 | Jefferson | 41 00 10 N | 091 57 28 W |
| Yampa Post Office (historical) | Post Office | 236 | Wapello | 41 00 10 N | 092 14 16 W |
| La Grange Cemetery | Cemetery | 306 | Lucas | 41 00 10 N | 093 05 56 W |
| Chariton Cemetery | Cemetery | 306 | Lucas | 41 00 10 N | 093 18 36 W |
| Cogley Physicians Clinic | Hospital | 308 | Mills | 41 00 10 N | 095 35 04 W |
| Malvern | Populated Place | 307 | Mills | 41 00 10 N | 095 35 07 W |
| Malvern Family Medical Center | Hospital | 308 | Mills | 41 00 10 N | 095 35 04 W |
| Malvern Post Office | Post Office | 304 | Mills | 41 00 09 N | 095 35 12 W |
| Plymouth Congergational United Church | Church | 198 | Wapello | 41 00 08 N | 092 25 22 W |
| Ottumwa Church of Christ | Church | 198 | Wapello | 41 00 08 N | 092 25 36 W |
| Watson School | School | 290 | Monroe | 41 00 08 N | 092 46 18 W |
| Hawthorne School | School | 353 | Mills | 41 00 08 N | 095 43 08 W |
| Hawthorne (historical) | Locale | 322 | Montgomery | 41 00 08 N | 095 20 13 W |
| Depot Museum | Building | 328 | Montgomery | 41 00 08 N | 095 13 51 W |
| Linn Grove Cemetery | Cemetery | 232 | Des Moines | 41 00 07 N | 091 14 12 W |
| Bethesda Cemetery | Cemetery | 232 | Jefferson | 41 00 07 N | 091 52 48 W |
| Bethesda Church | Church | 235 | Jefferson | 41 00 07 N | 091 52 45 W |
| Washington Bicentennial Recognition Historical Marker | Park | 203 | Wapello | 41 00 07 N | 092 26 49 W |
| East Plattsmouth (historical) | Locale | 292 | Mills | 41 00 07 N | 095 51 50 W |
| East Plattsmouth Post Office (historical) | Post Office | 292 | Mills | 41 00 07 N | 095 51 50 W |
| Junction City Post Office (historical) | Post Office | 292 | Mills | 41 00 07 N | 095 51 50 W |
| Little Brick School | School | 370 | Mills | 41 00 07 N | 095 42 08 W |
| Sharpsburgh Post Office (historical) | Post Office | 292 | Mills | 41 00 07 N | 095 51 50 W |
| Chinquapin School | School | 293 | Lucas | 41 00 07 N | 093 32 18 W |
| Eggleston Grove School | School | 330 | Clarke | 41 00 07 N | 093 41 31 W |
| Shank Cemetery | Cemetery | 375 | Montgomery | 41 00 07 N | 095 11 31 W |
| Covenanter Cemetery | Cemetery | 230 | Des Moines | 41 00 06 N | 091 14 02 W |
| Church of Jesus Christ Ottumwa | Church | 199 | Wapello | 41 00 06 N | 092 25 48 W |
| Wildwood Park | Park | 208 | Wapello | 41 00 06 N | 092 26 48 W |
| Interchange 32 | Crossing | 293 | Mills | 41 00 06 N | 095 48 23 W |
| Malvern Fire Station | Building | 307 | Mills | 41 00 06 N | 095 35 06 W |
| Hawthorne | Populated Place | 321 | Montgomery | 41 00 06 N | 095 20 13 W |
| Hawthorne Post Office (historical) | Post Office | 321 | Montgomery | 41 00 06 N | 095 20 13 W |
| Evangelistic Foursquare Church | Church | 197 | Wapello | 41 00 05 N | 092 25 11 W |
| La Grange Post Office (historical) | Post Office | 309 | Lucas | 41 00 05 N | 093 06 09 W |
| Red Haw Lake | Reservoir | 293 | Lucas | 41 00 05 N | 093 16 20 W |
| Hawthorne Church | Church | 321 | Montgomery | 41 00 05 N | 095 20 14 W |
| Red Oak | Locale | 321 | Montgomery | 41 00 05 N | 095 13 59 W |
| Hoyt Post Office (historical) | Post Office | 378 | Adams | 41 00 05 N | 094 52 11 W |
| Happy Hollow School | School | 284 | Monroe | 41 00 04 N | 093 00 39 W |
| Dickieville | Populated Place | 366 | Adams | 41 00 04 N | 094 53 46 W |
| Grace Baptist Church | Church | 378 | Adams | 41 00 04 N | 094 44 15 W |
| Wayne School | School | 308 | Monroe | 41 00 03 N | 093 04 08 W |
| Victory School | School | 311 | Lucas | 41 00 03 N | 093 09 18 W |
| West Alexander Post Office (historical) | Post Office | 314 | Lucas | 41 00 03 N | 093 12 31 W |
| Plattsmouth Bridge | Bridge | 285 | Mills | 41 00 03 N | 095 52 01 W |
| First Church of the Nazarene | Church | 196 | Wapello | 41 00 02 N | 092 24 57 W |
| Davis Street Christian Church | Church | 198 | Wapello | 41 00 02 N | 092 25 15 W |
| Watson Cemetery | Cemetery | 287 | Monroe | 41 00 02 N | 092 46 04 W |
| Prather Cemetery | Cemetery | 306 | Monroe | 41 00 02 N | 093 04 41 W |
| The Mormon Trail Historical Marker | Park | 298 | Lucas | 41 00 02 N | 093 18 31 W |
| Kelly Park | Park | 335 | Montgomery | 41 00 02 N | 095 13 54 W |
| Stuart School | School | 197 | Wapello | 41 00 01 N | 092 25 22 W |
| Wheat Chiropractic Center | Hospital | 344 | Montgomery | 41 00 01 N | 095 13 38 W |
| Old Swedish Cemetery | Cemetery | 202 | Des Moines | 41 00 00 N | 091 04 25 W |
| Old Swedish Church | Church | 202 | Des Moines | 41 00 00 N | 091 04 25 W |
| KBIZ-AM (Ottumwa) | Tower | 193 | Wapello | 41 00 00 N | 092 23 24 W |
| LaGrange School | School | 304 | Lucas | 41 00 00 N | 093 06 57 W |
| White School | School | 316 | Lucas | 40 59 59 N | 093 11 34 W |
| Hazel Dell School | School | 304 | Lucas | 40 59 58 N | 093 25 17 W |
| Clinton School | School | 286 | Lucas | 40 59 58 N | 093 27 38 W |