Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Woodbine High School | School | 338 | Harrison | 41 44 15 N | 095 42 26 W |
| Woodbine Municipal Airport | Airport | 328 | Harrison | 41 44 10 N | 095 41 01 W |
| Woodbine Police Department | Building | 330 | Harrison | 41 44 09 N | 095 42 08 W |
| Woodbine Post Office | Post Office | 332 | Harrison | 41 44 10 N | 095 42 12 W |
| Woodbine Public Library | Building | 332 | Harrison | 41 44 15 N | 095 42 09 W |
| Woodbridge Post Office (historical) | Post Office | 237 | Cedar | 41 46 20 N | 091 05 41 W |
| Woodburn | Locale | 292 | Clarke | 41 00 39 N | 093 35 48 W |
| Woodburn | Populated Place | 298 | Clarke | 41 00 43 N | 093 35 57 W |
| Woodburn Cemetery | Cemetery | 326 | Clarke | 41 00 28 N | 093 36 05 W |
| Woodburn Christian Church | Church | 298 | Clarke | 41 00 43 N | 093 35 57 W |
| Woodburn City Hall | Building | 298 | Clarke | 41 00 43 N | 093 35 57 W |
| Woodburn Post Office | Post Office | 298 | Clarke | 41 00 43 N | 093 35 57 W |
| Woodbury Central Community School | School | 363 | Woodbury | 42 29 03 N | 096 04 06 W |
| Woodbury County | Civil | 354 | Woodbury | 42 23 00 N | 096 02 01 W |
| Woodbury County Courthouse | Building | 341 | Woodbury | 42 23 19 N | 095 52 00 W |
| Woodbury County Courthouse | Building | 340 | Woodbury | 42 29 51 N | 096 24 20 W |
| Woodbury County Law Library | Building | 344 | Woodbury | 42 29 58 N | 096 24 22 W |
| Woodbury County Library | Building | 360 | Woodbury | 42 29 21 N | 096 04 19 W |
| Woodbury Hills Shopping Center | Locale | 302 | Pottawattamie | 41 14 32 N | 095 49 10 W |
| Woodbury School | School | 274 | Marshall | 42 02 60 N | 092 54 07 W |
| Woodbury Township Cemetery | Cemetery | 352 | Woodbury | 42 24 31 N | 096 21 24 W |
| Woodcock Wildlife Area | Park | 243 | Jasper | 41 42 50 N | 093 20 31 W |
| Wooded Lake Mobile Home Park | Populated Place | 298 | Pottawattamie | 41 13 04 N | 095 51 56 W |
| Woodford Island | Island | 378 | Cerro Gordo | 43 07 16 N | 093 25 02 W |
| Woodland | Locale | 305 | Decatur | 40 49 32 N | 093 56 21 W |
| Woodland | Populated Place | 332 | Decatur | 40 41 46 N | 093 35 53 W |
| Woodland Cemetery | Cemetery | 269 | Jasper | 41 34 28 N | 092 47 34 W |
| Woodland Cemetery | Cemetery | 265 | Polk | 41 35 20 N | 093 38 48 W |
| Woodland Cemetery | Cemetery | 354 | Ringgold | 40 44 32 N | 094 06 28 W |
| Woodland Cemetery | Cemetery | 295 | Story | 41 55 57 N | 093 24 24 W |
| Woodland Community Church | Church | 242 | Polk | 41 34 58 N | 093 33 51 W |
| Woodland Hills | Populated Place | 277 | Polk | 41 33 12 N | 093 27 44 W |
| Woodland Hills Church of Christ | Church | 275 | Polk | 41 33 15 N | 093 27 45 W |
| Woodland Lake | Reservoir | 285 | Polk | 41 45 21 N | 093 26 56 W |
| Woodland Lake Dam | Dam | 285 | Polk | 41 45 21 N | 093 26 56 W |
| Woodland Mobile Home Park | Populated Place | 177 | Louisa | 41 11 25 N | 091 12 01 W |
| Woodland Mounds State Preserve | Park | 258 | Warren | 41 21 20 N | 093 26 01 W |
| Woodland Park | Park | 291 | Jasper | 41 42 60 N | 093 03 05 W |
| Woodland Post Office (historical) | Post Office | 332 | Decatur | 40 41 46 N | 093 35 53 W |
| Woodland School | School | 356 | Pottawattamie | 41 19 07 N | 095 50 43 W |
| Woodland Terraces Mobile Home Park | Populated Place | 260 | Black Hawk | 42 29 50 N | 092 18 01 W |
| Woodlawn Cemetery | Cemetery | 448 | Buena Vista | 42 42 55 N | 095 17 20 W |
| Woodlawn Cemetery | Cemetery | 312 | Fayette | 42 40 50 N | 091 56 09 W |
| Woodlawn Cemetery | Cemetery | 278 | Monroe | 41 08 06 N | 092 54 41 W |
| Woodlawn Cemetery | Cemetery | 289 | Tama | 41 59 12 N | 092 34 13 W |
| Woodlawn Cemetery | Cemetery | 224 | Washington | 41 17 35 N | 091 41 51 W |
| Woodlawn Christian Church | Church | 377 | Calhoun | 42 16 07 N | 094 43 51 W |
| Woodlawn Park | Park | 264 | Polk | 41 38 18 N | 093 39 39 W |
| Woodlawn School | School | 283 | Polk | 41 38 01 N | 093 39 56 W |
| Woodlyn Hills Golf Course | Locale | 442 | Dickinson | 43 19 60 N | 095 07 21 W |
| Woodmans Hollow State Park | Park | 307 | Webster | 42 25 16 N | 094 06 07 W |
| Woodmansee Cemetery | Cemetery | 290 | Decatur | 40 44 26 N | 093 53 40 W |
| Woodrow Wilson Elementary School | School | 287 | Jasper | 41 41 32 N | 093 03 44 W |
| Woodrow Wilson Middle School | School | 349 | Woodbury | 42 30 04 N | 096 23 38 W |
| Woods Cemetery | Cemetery | 253 | Mahaska | 41 23 39 N | 092 36 47 W |
| Woods Cemetery | Cemetery | 324 | Wayne | 40 53 19 N | 093 23 51 W |
| Woods Cemetery | Cemetery | 324 | Wayne | 40 53 18 N | 093 23 52 W |
| Woods Edge Golf Course | Locale | 336 | Clayton | 42 38 40 N | 091 25 16 W |
| Woods Farm Cemetery | Cemetery | 232 | Jackson | 42 06 30 N | 090 42 40 W |
| Woods Motel and RV Park | Locale | 293 | Warren | 41 21 06 N | 093 33 29 W |
| Woods Post Office (historical) | Post Office | 294 | Benton | 42 10 04 N | 092 14 01 W |
| Woodside Golf Course | Locale | 285 | Polk | 41 40 55 N | 093 36 31 W |
| Woodside Mobile Estates | Populated Place | 218 | Henry | 40 57 49 N | 091 33 29 W |
| Woodside Post Office (historical) | Post Office | 343 | Winneshiek | 43 14 00 N | 091 41 31 W |
| Woodside School | School | 289 | Polk | 41 39 58 N | 093 36 07 W |
| Woodthrush State Park | Park | 202 | Jefferson | 40 58 54 N | 091 48 28 W |
| Woodville | Locale | 289 | Jasper | 41 38 40 N | 093 19 46 W |
| Woodville Post Office (historical) | Post Office | 339 | Winneshiek | 43 16 40 N | 091 38 33 W |
| Woodward | Locale | 326 | Dallas | 41 51 28 N | 093 55 18 W |
| Woodward | Populated Place | 326 | Dallas | 41 51 25 N | 093 55 19 W |
| Woodward Cemetery | Cemetery | 320 | Dallas | 41 51 15 N | 093 55 58 W |
| Woodward City Hall | Building | 326 | Dallas | 41 51 28 N | 093 55 17 W |
| Woodward Fire House | Building | 314 | Dallas | 41 50 22 N | 093 55 21 W |
| Woodward Glen | Valley | | Monona | 42 10 00 N | 095 59 43 W |
| Woodward Golf and Recreation | Locale | 315 | Dallas | 41 50 55 N | 093 55 46 W |
| Woodward Post Office | Post Office | 314 | Dallas | 41 50 23 N | 093 55 21 W |
| Woodward Public Library | Building | 326 | Dallas | 41 51 25 N | 093 55 21 W |
| Woodward State Hospital | Hospital | 323 | Boone | 41 52 20 N | 093 54 58 W |
| Woodward State Hospital Heliport | Airport | 323 | Boone | 41 52 18 N | 093 54 52 W |
| Woodward State Hospital School | School | 326 | Boone | 41 52 15 N | 093 55 19 W |
| Woodward USA Health Care Center | Hospital | 321 | Dallas | 41 51 05 N | 093 55 15 W |
| Woodward-Granger Community School | School | 323 | Dallas | 41 51 20 N | 093 55 34 W |
| Woodward-Granger Elementary School | School | 271 | Dallas | 41 45 41 N | 093 49 16 W |
| Wool Stock Post Office (historical) | Post Office | 341 | Wright | 42 34 23 N | 093 48 38 W |
| Wool Will Machine Shop Museum | Building | 224 | Iowa | 41 48 01 N | 091 52 11 W |
| Woolson (historical) | Locale | 229 | Jefferson | 41 09 48 N | 091 59 36 W |
| Woolson Friends Church | Church | 230 | Jefferson | 41 09 47 N | 091 59 36 W |
| Woolson Post Office (historical) | Post Office | 229 | Jefferson | 41 09 48 N | 091 59 36 W |
| Woolstock | Locale | 332 | Wright | 42 34 02 N | 093 50 49 W |
| Woolstock | Populated Place | 338 | Wright | 42 33 60 N | 093 50 38 W |
| Woolstock Cemetery | Cemetery | 339 | Wright | 42 35 39 N | 093 50 30 W |
| Woolstock City Hall | Building | 338 | Wright | 42 33 60 N | 093 50 38 W |
| Woolstock Community Hall | Building | 338 | Wright | 42 33 60 N | 093 50 38 W |
| Woolstock Post Office | Post Office | 338 | Wright | 42 33 60 N | 093 50 38 W |
| Wooster Post Office (historical) | Post Office | 231 | Jefferson | 40 57 10 N | 091 51 07 W |
| Wooster School (historical) | School | 205 | Jefferson | 40 54 45 N | 091 48 41 W |
| Word of Faith Pentecostal Church | Church | 223 | Linn | 41 58 07 N | 091 40 46 W |
| Word of Faith Tabernacle Church | Church | 177 | Scott | 41 30 51 N | 090 37 16 W |
| Word of God Lutheran Church | Church | 245 | Linn | 42 00 25 N | 091 38 31 W |
| Word of Life Chapel | Church | 335 | Webster | 42 30 55 N | 094 12 51 W |
| Word of Life Church | Church | 268 | Dubuque | 42 29 25 N | 090 44 00 W |
| Word of Life Church | Church | 349 | Harrison | 41 51 16 N | 095 36 02 W |
| Word of Life Fellowship | Church | 267 | Davis | 40 45 05 N | 092 25 13 W |
| Word of Promise Church | Church | 273 | Marshall | 42 02 17 N | 092 54 36 W |
| Worhies Cemetery | Cemetery | 201 | Henry | 41 01 15 N | 091 42 49 W |
| Workman Airfield | Airport | 216 | Scott | 41 36 30 N | 090 51 29 W |
| World War II Memorial Park | Park | 411 | Sioux | 43 04 18 N | 095 54 18 W |
| Worldwide Church of God | Church | 266 | Polk | 41 36 02 N | 093 36 33 W |
| Worrell Creek | Stream | | Story | 42 00 56 N | 093 37 20 W |
| Worth County | Civil | 370 | Worth | 43 23 00 N | 093 16 01 W |