Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Elbow Creek | Stream | | Linn | 42 00 10 N | 091 29 04 W |
| McLouds Run Park | Park | 225 | Linn | 42 00 10 N | 091 39 56 W |
| Keystone Nurse Care Center | Hospital | 272 | Benton | 42 00 10 N | 092 11 54 W |
| Keystone Elementary School | School | 276 | Benton | 42 00 10 N | 092 11 58 W |
| Izaak Walton Tract Recreation Area | Park | 291 | Tama | 42 00 10 N | 092 37 01 W |
| Mardean Park | Park | 305 | Story | 42 00 10 N | 093 26 47 W |
| Adena Post Office (historical) | Post Office | 444 | Crawford | 42 00 10 N | 095 06 31 W |
| Halbur Ridge Wildlife Area | Park | 414 | Carroll | 42 00 10 N | 094 58 46 W |
| Christ Lutheran Church | Church | 324 | Greene | 42 00 10 N | 094 22 36 W |
| North Fork Walnut Creek | Stream | | Jones | 42 00 09 N | 091 15 53 W |
| South Fork Walnut Creek | Stream | | Jones | 42 00 09 N | 091 15 53 W |
| Seminole Valley Park | Park | 222 | Linn | 42 00 09 N | 091 43 50 W |
| Ames Mall | Locale | 272 | Story | 42 00 09 N | 093 36 25 W |
| Cornerstone Church of Ames | Church | 272 | Story | 42 00 09 N | 093 36 25 W |
| Delmar | Populated Place | 250 | Clinton | 42 00 08 N | 090 36 25 W |
| Delmar Depot Museum | Building | 250 | Clinton | 42 00 08 N | 090 36 25 W |
| Delmar Post Office | Post Office | 250 | Clinton | 42 00 08 N | 090 36 25 W |
| Saint Patricks Church | Church | 252 | Clinton | 42 00 08 N | 090 36 19 W |
| Walnut Creek | Stream | | Jones | 42 00 08 N | 091 07 38 W |
| Green Hills Health Center | Hospital | 298 | Story | 42 00 08 N | 093 39 01 W |
| Mount Mercy College | School | 258 | Linn | 42 00 07 N | 091 39 01 W |
| Jefferson Healthcare Center | Hospital | 324 | Greene | 42 00 07 N | 094 22 32 W |
| Jefferson Senior High School | School | 324 | Greene | 42 00 07 N | 094 22 32 W |
| Jehovahs Witnesses McCloud Springs Kingdom Hall | Church | 233 | Linn | 42 00 06 N | 091 39 48 W |
| Keystone Family Practice Center | Hospital | 274 | Benton | 42 00 06 N | 092 11 54 W |
| Olin (historical) | Locale | 229 | Jones | 42 00 05 N | 091 08 31 W |
| Cedar Rapids Country Club | Locale | 244 | Linn | 42 00 05 N | 091 37 28 W |
| Regis High School | School | 242 | Linn | 42 00 05 N | 091 38 50 W |
| Ellis Golf Course | Locale | 244 | Linn | 42 00 05 N | 091 42 01 W |
| Marshalltown Community College | School | 305 | Marshall | 42 00 05 N | 092 54 31 W |
| Holy Angels Cemetery | Cemetery | 420 | Carroll | 42 00 05 N | 094 54 52 W |
| Third Creek | Stream | | Boone | 42 00 05 N | 093 54 38 W |
| Church of Christ | Church | 325 | Greene | 42 00 05 N | 094 22 40 W |
| Garfield School | School | 241 | Linn | 42 00 04 N | 091 39 26 W |
| Buena Vista University - Marshalltown Campus | School | 305 | Marshall | 42 00 04 N | 092 54 31 W |
| Sunset Park | Park | 357 | Crawford | 42 00 04 N | 095 22 29 W |
| Hauntown | Populated Place | 185 | Clinton | 42 00 03 N | 090 11 56 W |
| Delmar Junction (historical) | Locale | 250 | Clinton | 42 00 03 N | 090 36 24 W |
| Saint John's Lutheran Church | Church | 275 | Benton | 42 00 03 N | 092 12 07 W |
| Sunset Village | Populated Place | 363 | Crawford | 42 00 03 N | 095 22 26 W |
| Crawford Heights Memorial Cemetery | Cemetery | 401 | Crawford | 42 00 03 N | 095 20 50 W |
| Olin Fire Station | Building | 230 | Jones | 42 00 02 N | 091 08 32 W |
| New Hope Christian Church | Church | 305 | Marshall | 42 00 02 N | 092 54 47 W |
| Saint Matthew School | School | 242 | Linn | 42 00 01 N | 091 38 14 W |
| Le Grand | Locale | 281 | Marshall | 42 00 01 N | 092 46 36 W |
| Le Grand Elevator Company Elevator | Locale | 281 | Marshall | 42 00 01 N | 092 46 36 W |
| State of Iowa | Civil | 292 | Story | 42 00 01 N | 093 30 02 W |
| Roselle | Populated Place | 418 | Carroll | 42 00 01 N | 094 54 56 W |
| Roselle Post Office (historical) | Post Office | 420 | Carroll | 42 00 01 N | 094 55 04 W |
| Saint Matthew School | School | 243 | Linn | 41 59 60 N | 091 38 14 W |
| Busch Cemetery | Cemetery | 269 | Clinton | 41 59 59 N | 090 46 56 W |
| Saint Matthews Church | Church | 244 | Linn | 41 59 59 N | 091 38 13 W |
| Church of God of Cleveland | Church | 239 | Linn | 41 59 59 N | 091 39 36 W |
| Maple River | Stream | | Monona | 41 59 59 N | 095 58 56 W |
| Township of Colfax | Civil | 322 | Boone | 41 59 59 N | 093 45 09 W |
| Site H-4-2 Davis Battle Creek Dam | Dam | 369 | Monona | 41 59 58 N | 095 48 30 W |
| Turkey Creek | Stream | | Boone | 41 59 58 N | 093 54 22 W |
| Marcy (historical) | Locale | 330 | Boone | 41 59 58 N | 093 56 36 W |
| Marcy Post Office (historical) | Post Office | 330 | Boone | 41 59 58 N | 093 56 36 W |
| Olin Post Office | Post Office | 231 | Jones | 41 59 57 N | 091 08 35 W |
| Saint Paul United Methodist Church | Church | 231 | Jones | 41 59 57 N | 091 08 33 W |
| Iowa State Nursery | Park | 273 | Story | 41 59 57 N | 093 36 17 W |
| Camp Hantesa | Locale | 272 | Boone | 41 59 57 N | 093 53 41 W |
| North Timber Creek | Stream | | Marshall | 41 59 56 N | 092 51 07 W |
| Skinners Creek | Stream | 384 | Monona | 41 59 56 N | 095 43 31 W |
| Belvidere Post Office (historical) | Post Office | 368 | Monona | 41 59 56 N | 095 55 46 W |
| Elk River Post Office (historical) | Post Office | 182 | Clinton | 41 59 55 N | 090 11 50 W |
| Olin Heritage Center | Building | 232 | Jones | 41 59 55 N | 091 08 31 W |
| Olin Public Library | Building | 232 | Jones | 41 59 55 N | 091 08 31 W |
| Tomahawk Park | Park | 230 | Linn | 41 59 55 N | 091 38 49 W |
| Keystone City Hall | Building | 271 | Benton | 41 59 55 N | 092 11 53 W |
| Keystone Post Office | Post Office | 271 | Benton | 41 59 55 N | 092 11 53 W |
| Schroeder Library | Building | 271 | Benton | 41 59 55 N | 092 11 53 W |
| Lutheran Church | Church | 228 | Jones | 41 59 54 N | 091 08 39 W |
| Keystone | Populated Place | 269 | Benton | 41 59 54 N | 092 11 51 W |
| Township of East Boyer | Civil | 402 | Crawford | 41 59 54 N | 095 15 25 W |
| Olin | Populated Place | 232 | Jones | 41 59 53 N | 091 08 30 W |
| Olin Park | Park | 232 | Jones | 41 59 53 N | 091 08 30 W |
| Saint John Evangelical Lutheran Church | Church | 232 | Jones | 41 59 53 N | 091 08 30 W |
| Hispanic Ministry | Church | 240 | Linn | 41 59 53 N | 091 39 30 W |
| Immaculate Conception Catholic Church | Church | 240 | Linn | 41 59 53 N | 091 39 30 W |
| Atkins (historical) | Locale | 256 | Benton | 41 59 52 N | 091 51 51 W |
| Keystone (historical) | Locale | 268 | Benton | 41 59 52 N | 092 11 56 W |
| Jungletown Public Access | Locale | 229 | Jones | 41 59 50 N | 091 03 22 W |
| Franklin Junior High School | School | 238 | Linn | 41 59 50 N | 091 38 32 W |
| Northview Park | Park | 237 | Linn | 41 59 50 N | 091 38 23 W |
| Cedar Rock Korean Assembly | Church | 229 | Linn | 41 59 50 N | 091 39 01 W |
| Daniels Park | Park | 234 | Linn | 41 59 50 N | 091 39 29 W |
| Interchange 21 | Crossing | 226 | Linn | 41 59 50 N | 091 40 01 W |
| Atkins Fire Department | Building | 258 | Benton | 41 59 50 N | 091 51 39 W |
| Atkins Roundhouse Area | Park | 269 | Benton | 41 59 50 N | 091 50 36 W |
| Toledo | Locale | 259 | Tama | 41 59 50 N | 092 35 01 W |
| Oakland Cemetery | Cemetery | 412 | Crawford | 41 59 50 N | 095 20 53 W |
| Oakwood Road Church | Church | 303 | Story | 41 59 50 N | 093 39 10 W |
| Township of Worth | Civil | 327 | Boone | 41 59 50 N | 093 51 51 W |
| Washington High School | School | 255 | Linn | 41 59 49 N | 091 37 52 W |
| Cold Stream | Stream | | Linn | 41 59 49 N | 091 40 36 W |
| Atkins | Populated Place | 260 | Benton | 41 59 49 N | 091 51 44 W |
| Shellsburg Elevator | Locale | 260 | Benton | 41 59 49 N | 091 51 46 W |
| First Presbyterian Church | Church | 262 | Tama | 41 59 49 N | 092 34 56 W |
| Tama County Historical Museum | Building | 274 | Tama | 41 59 49 N | 092 34 43 W |
| Minnow Creek | Stream | | Tama | 41 59 49 N | 092 35 19 W |
| Township of Indian Village | Civil | 253 | Tama | 41 59 49 N | 092 42 25 W |
| Butlerville Cemetery | Cemetery | 289 | Tama | 41 59 49 N | 092 43 50 W |
| Sibles Creek | Stream | | Jones | 41 59 48 N | 091 08 01 W |
| Bethany Lutheran Church | Church | 250 | Linn | 41 59 48 N | 091 38 04 W |
| Atkins Library | Building | 262 | Benton | 41 59 48 N | 091 51 43 W |
| Atkins Memorial Union Hall | Building | 262 | Benton | 41 59 48 N | 091 51 43 W |
| Atkins Post Office | Post Office | 262 | Benton | 41 59 48 N | 091 51 43 W |
| Rouse Cemetery | Cemetery | 267 | Tama | 41 59 48 N | 092 41 16 W |