Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Charlotte | Populated Place | 212 | Clinton | 41 57 37 N | 090 27 54 W |
| Charlotte (historical) | Locale | 213 | Clinton | 41 57 35 N | 090 27 52 W |
| Charlotte City Hall | Building | 212 | Clinton | 41 57 37 N | 090 27 54 W |
| Charlotte Fire Station | Building | 212 | Clinton | 41 57 37 N | 090 27 54 W |
| Charlotte Post Office | Post Office | 212 | Clinton | 41 57 37 N | 090 27 54 W |
| Charlottsville Post Office (historical) | Post Office | 354 | Madison | 41 22 00 N | 094 08 11 W |
| Charter Oak | Populated Place | 383 | Crawford | 42 04 06 N | 095 35 30 W |
| Charter Oak - Ute Community Schools | School | 394 | Crawford | 42 03 55 N | 095 35 27 W |
| Charter Oak (historical) | Locale | 374 | Crawford | 42 04 13 N | 095 35 35 W |
| Charter Oak Cemetery | Cemetery | 396 | Crawford | 42 04 53 N | 095 35 40 W |
| Charter Oak Mercy Medical Center | Hospital | 385 | Crawford | 42 04 04 N | 095 35 29 W |
| Charter Oak Post Office | Post Office | 380 | Crawford | 42 04 09 N | 095 35 29 W |
| Charter Oak Public Library | Building | 383 | Crawford | 42 04 06 N | 095 35 30 W |
| Chase (historical) | Locale | 214 | Johnson | 41 46 31 N | 091 41 27 W |
| Chase Cemetery | Cemetery | 228 | Jasper | 41 30 55 N | 092 52 27 W |
| Chase Cemetery | Cemetery | 425 | Sac | 42 30 13 N | 095 13 45 W |
| Chase Cemetery (historical) | Cemetery | 299 | Decatur | 40 38 00 N | 093 46 31 W |
| Chase Post Office (historical) | Post Office | 217 | Johnson | 41 46 31 N | 091 40 31 W |
| Chastain Cemetery | Cemetery | 334 | Decatur | 40 41 29 N | 093 41 17 W |
| Chatfield Park | Park | 173 | Lee | 40 25 45 N | 091 23 31 W |
| Chatham Park | Park | 253 | Linn | 42 02 33 N | 091 37 36 W |
| Chatsworth | Locale | 354 | Sioux | 42 54 50 N | 096 31 01 W |
| Chatsworth | Populated Place | 354 | Sioux | 42 54 58 N | 096 30 59 W |
| Chatsworth Post Office (historical) | Post Office | 354 | Sioux | 42 54 58 N | 096 30 59 W |
| Chattahoochie County Park | Park | 333 | Winneshiek | 43 18 50 N | 091 49 02 W |
| Chattanooga Post Office (historical) | Post Office | 325 | Dallas | 41 31 30 N | 094 04 51 W |
| Chauncey Swan Circle Historical Marker | Park | 197 | Johnson | 41 40 22 N | 091 32 09 W |
| Chautauqua | Locale | 313 | Pottawattamie | 41 17 27 N | 095 47 37 W |
| Chautauqua | Populated Place | 313 | Pottawattamie | 41 17 27 N | 095 47 37 W |
| Chautauqua Building | Building | 360 | Sac | 42 25 15 N | 094 59 06 W |
| Chautauqua Grounds | Park | 265 | Polk | 41 36 45 N | 093 45 54 W |
| Chautauqua Guest Home | Hospital | 306 | Floyd | 43 04 11 N | 092 41 16 W |
| Chautauqua Guest Home | Hospital | 314 | Floyd | 43 03 20 N | 092 40 34 W |
| Chautauqua Park | Park | 431 | Buena Vista | 42 38 08 N | 095 11 41 W |
| Chautauqua Park | Park | 229 | Des Moines | 41 00 32 N | 091 07 58 W |
| Chautauqua Park | Park | 324 | Greene | 42 00 31 N | 094 22 52 W |
| Chautauqua Park | Park | 217 | Jefferson | 41 00 30 N | 091 56 46 W |
| Chautauqua Park | Park | 335 | Montgomery | 41 01 00 N | 095 13 21 W |
| Chautauqua Park | Park | 328 | Pottawattamie | 41 18 22 N | 095 24 07 W |
| Chautauqua Park | Park | 335 | Woodbury | 42 26 38 N | 096 22 41 W |
| Chautauqua Park Trail | Trail | 331 | Woodbury | 42 27 30 N | 096 22 44 W |
| Checauqua River Access | Locale | 208 | Keokuk | 41 18 30 N | 092 12 31 W |
| Chedister Cemetery | Cemetery | 237 | Monroe | 41 01 53 N | 092 41 31 W |
| Cheever Lake | Lake | 437 | Emmet | 43 22 22 N | 094 53 00 W |
| Cheever Lake State Game Mgt Area | Park | 437 | Emmet | 43 22 13 N | 094 52 52 W |
| Chelsea | Locale | 238 | Tama | 41 55 13 N | 092 23 43 W |
| Chelsea | Populated Place | 238 | Tama | 41 55 09 N | 092 23 41 W |
| Chelsea City Hall | Building | 238 | Tama | 41 55 08 N | 092 23 42 W |
| Chelsea Elementary School | School | 238 | Tama | 41 55 06 N | 092 23 49 W |
| Chelsea Fire Department | Building | 238 | Tama | 41 55 08 N | 092 23 42 W |
| Chelsea Post Office | Post Office | 238 | Tama | 41 55 13 N | 092 23 42 W |
| Chelsea Public Library | Building | 238 | Tama | 41 55 08 N | 092 23 42 W |
| Chelsea United Methodist Church | Church | 238 | Tama | 41 54 59 N | 092 23 40 W |
| Chemistry Building | Building | 203 | Johnson | 41 39 51 N | 091 32 13 W |
| Cheney | Populated Place | 279 | Benton | 42 15 15 N | 091 55 39 W |
| Chequest | Populated Place | 220 | Davis | 40 49 42 N | 092 14 45 W |
| Chequest Creek | Stream | | Van Buren | 40 44 57 N | 091 59 22 W |
| Chequest Post Office (historical) | Post Office | 246 | Davis | 40 48 36 N | 092 14 26 W |
| Chequest Wildlife Area | Park | 185 | Van Buren | 40 45 50 N | 092 01 01 W |
| Chequist Post Office (historical) | Post Office | 256 | Davis | 40 49 40 N | 092 22 46 W |
| Cherokee | Locale | 363 | Cherokee | 42 44 50 N | 095 33 21 W |
| Cherokee | Populated Place | 364 | Cherokee | 42 44 58 N | 095 33 06 W |
| Cherokee City Hall | Building | 363 | Cherokee | 42 44 55 N | 095 33 08 W |
| Cherokee County | Civil | 420 | Cherokee | 42 44 00 N | 095 37 01 W |
| Cherokee County Courthouse | Building | 376 | Cherokee | 42 45 01 N | 095 33 22 W |
| Cherokee County Fairground | Locale | 371 | Cherokee | 42 44 18 N | 095 32 56 W |
| Cherokee Family Practice Center | Hospital | 364 | Cherokee | 42 45 03 N | 095 33 06 W |
| Cherokee Fire Department | Building | 363 | Cherokee | 42 44 54 N | 095 33 12 W |
| Cherokee Golf and Country Club | Locale | 397 | Cherokee | 42 45 35 N | 095 33 44 W |
| Cherokee Hall | Building | 433 | Sioux | 43 11 05 N | 095 52 51 W |
| Cherokee Law Enforcement Center | Building | 376 | Cherokee | 42 45 01 N | 095 33 22 W |
| Cherokee Municipal Airport | Airport | 370 | Cherokee | 42 43 51 N | 095 33 20 W |
| Cherokee Post Office | Post Office | 368 | Cherokee | 42 45 03 N | 095 33 13 W |
| Cherokee Public Library | Building | 362 | Cherokee | 42 44 54 N | 095 33 06 W |
| Cherokee Trail Park | Park | 240 | Linn | 41 58 27 N | 091 43 22 W |
| Cherry Auditorium | Building | 229 | Linn | 41 59 13 N | 091 39 25 W |
| Cherry Creek | Stream | | Clinton | 41 49 13 N | 090 24 16 W |
| Cherry Creek | Stream | | Jasper | 41 37 15 N | 093 05 22 W |
| Cherry Creek | Stream | | Madison | 41 28 38 N | 093 48 31 W |
| Cherry Hill Cemetery | Cemetery | 252 | Dubuque | 42 30 02 N | 090 42 08 W |
| Cherry Hill Cemetery | Cemetery | 175 | Lee | 40 38 30 N | 091 18 21 W |
| Cherry Hill Park | Park | 257 | Linn | 41 58 29 N | 091 44 52 W |
| Cherry Hill Park | Park | 253 | Linn | 41 58 25 N | 091 45 11 W |
| Cherry Lake | Lake | 250 | Tama | 41 57 42 N | 092 35 08 W |
| Cherry Mound Cemetery | Cemetery | 304 | Allamakee | 43 10 00 N | 091 16 45 W |
| Cherry Street Bridge | Bridge | 271 | Butler | 42 42 42 N | 092 34 55 W |
| Cherry Valley | Valley | | Clayton | 42 41 53 N | 091 04 23 W |
| Cherrydale Park | Park | 202 | Muscatine | 41 34 58 N | 091 01 03 W |
| Cheslea Creek | Stream | | Cerro Gordo | 43 09 20 N | 093 13 23 W |
| Chester | Locale | 306 | Poweshiek | 41 50 54 N | 092 42 31 W |
| Chester | Populated Place | 374 | Howard | 43 29 28 N | 092 21 38 W |
| Chester (historical) | Locale | 374 | Howard | 43 29 28 N | 092 21 36 W |
| Chester Cemetery | Cemetery | 310 | Hardin | 42 13 15 N | 093 08 31 W |
| Chester Cemetery | Cemetery | 266 | Jasper | 41 32 13 N | 092 50 02 W |
| Chester Cemetery | Cemetery | 301 | Poweshiek | 41 50 03 N | 092 42 25 W |
| Chester Cemetery | Cemetery | 303 | Poweshiek | 41 50 28 N | 092 43 06 W |
| Chester Center Post Office (historical) | Post Office | 304 | Poweshiek | 41 50 05 N | 092 42 23 W |
| Chester Church | Church | 324 | Hardin | 42 14 15 N | 093 08 33 W |
| Chester Church | Church | 305 | Poweshiek | 41 50 05 N | 092 42 22 W |
| Chester City Hall | Building | 374 | Howard | 43 29 28 N | 092 21 36 W |
| Chester Grain Incorporated Elevator | Locale | 374 | Howard | 43 29 28 N | 092 21 36 W |
| Chester Hill Cemetery | Cemetery | 378 | Howard | 43 29 23 N | 092 24 27 W |
| Chester Post Office | Post Office | 374 | Howard | 43 29 28 N | 092 21 36 W |
| Chesterfield Christian Church | Church | 244 | Polk | 41 34 54 N | 093 34 08 W |
| Chesterfield Park | Park | 243 | Polk | 41 34 60 N | 093 34 02 W |
| Chesterfield Post Office (historical) | Post Office | 241 | Polk | 41 34 60 N | 093 34 36 W |
| Chew Cemetery | Cemetery | 240 | Mahaska | 41 19 00 N | 092 40 01 W |
| Cheyenne City Park | Park | 215 | Linn | 41 57 30 N | 091 35 01 W |
| Cheyenne Park | Park | 241 | Linn | 41 56 23 N | 091 42 13 W |
| Chicago and Northwestern Railroad Swing Bridge | Bridge | 178 | Clinton | 41 50 15 N | 090 11 14 W |