Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Weldon (historical) | Locale | 351 | Decatur | 40 53 58 N | 093 43 41 W |
| Weldon Cemetery | Cemetery | 249 | Mahaska | 41 14 50 N | 092 49 04 W |
| Weldon Creek | Stream | | Decatur | 40 51 50 N | 093 37 47 W |
| Weldon Landing Strip | Airport | 287 | Monroe | 41 07 48 N | 092 53 60 W |
| Weldon Post Office | Post Office | 350 | Decatur | 40 53 51 N | 093 44 06 W |
| Well's Mills Post Office (historical) | Post Office | 250 | Appanoose | 40 35 52 N | 092 43 08 W |
| Welland Post Office (historical) | Post Office | 319 | Appanoose | 40 35 40 N | 093 00 05 W |
| Weller | Populated Place | 292 | Monroe | 41 06 26 N | 093 02 58 W |
| Weller Center for Business and International Studies | Building | 265 | Marion | 41 24 06 N | 092 55 21 W |
| Weller Post Office (historical) | Post Office | 294 | Monroe | 41 06 27 N | 093 03 01 W |
| Wellington Ridge Park | Park | 288 | Polk | 41 36 05 N | 093 47 06 W |
| Wellman | Populated Place | 213 | Washington | 41 27 51 N | 091 50 18 W |
| Wellman (historical) | Locale | 211 | Washington | 41 27 45 N | 091 50 17 W |
| Wellman Baptist Church | Church | 221 | Washington | 41 27 58 N | 091 50 08 W |
| Wellman Cemetery | Cemetery | 264 | Wapello | 40 57 00 N | 092 33 31 W |
| Wellman Cemetery | Cemetery | 234 | Washington | 41 27 49 N | 091 50 52 W |
| Wellman City Hall | Building | 218 | Washington | 41 27 56 N | 091 50 16 W |
| Wellman City Park | Park | 222 | Washington | 41 28 55 N | 091 49 56 W |
| Wellman Elementary School | School | 237 | Washington | 41 28 09 N | 091 50 10 W |
| Wellman Fire Department | Building | 212 | Washington | 41 27 55 N | 091 49 47 W |
| Wellman Golf Course | Locale | 228 | Washington | 41 28 10 N | 091 49 44 W |
| Wellman Historical Park | Park | 228 | Washington | 41 28 02 N | 091 50 11 W |
| Wellman Lutheran Church | Church | 219 | Washington | 41 27 59 N | 091 50 00 W |
| Wellman Mennonite Church | Church | 243 | Washington | 41 28 31 N | 091 50 18 W |
| Wellman Post Office | Post Office | 216 | Washington | 41 27 55 N | 091 50 19 W |
| Wellness - Recreation Center | Building | 281 | Black Hawk | 42 31 01 N | 092 28 01 W |
| Wells Fargo Express Building | Building | 368 | Kossuth | 43 04 07 N | 094 14 15 W |
| Wells Hall | Building | 264 | Polk | 41 33 44 N | 093 38 44 W |
| Wells of Living Grace Church | Church | 406 | Clay | 43 07 34 N | 095 07 33 W |
| Wells Post Office (historical) | Post Office | 359 | Madison | 41 14 28 N | 094 12 59 W |
| Wells-Carey School | School | 185 | Lee | 40 23 47 N | 091 23 31 W |
| Wellsburg | Populated Place | 308 | Grundy | 42 27 33 N | 092 56 19 W |
| Wellsburg (historical) | Locale | 328 | Grundy | 42 26 17 N | 092 55 31 W |
| Wellsburg Cemetery | Cemetery | 336 | Grundy | 42 26 05 N | 092 55 22 W |
| Wellsburg City Hall | Building | 335 | Grundy | 42 26 05 N | 092 55 36 W |
| Wellsburg Post Office | Post Office | 335 | Grundy | 42 26 05 N | 092 55 36 W |
| Wellsburg Public Library | Building | 335 | Grundy | 42 26 05 N | 092 55 36 W |
| Wellsburg Reformed Church | Church | 339 | Grundy | 42 26 04 N | 092 55 24 W |
| Wellston (historical) | Locale | 230 | Washington | 41 15 25 N | 091 50 41 W |
| Wellston Post Office (historical) | Post Office | 230 | Washington | 41 15 25 N | 091 50 41 W |
| Welsh Bridge | Bridge | 348 | Calhoun | 42 22 43 N | 094 26 11 W |
| Welsh Cemetery | Cemetery | 226 | Johnson | 41 36 49 N | 091 36 35 W |
| Welsh Chapel Cemetery | Cemetery | 224 | Des Moines | 40 59 40 N | 091 15 06 W |
| Welsh Chiropractic Center | Hospital | 374 | Worth | 43 26 44 N | 093 13 35 W |
| Welsh Church | Church | 228 | Johnson | 41 36 48 N | 091 36 35 W |
| Welsh Creek | Stream | | Crawford | 41 55 10 N | 095 32 32 W |
| Welsh Lake | Lake | 436 | Dickinson | 43 27 38 N | 095 10 21 W |
| Welsh Lake Wildlife Management Area | Park | 436 | Dickinson | 43 27 39 N | 095 10 18 W |
| Welshs Slough | Stream | | Calhoun | 42 22 24 N | 094 26 44 W |
| Welter County Park | Park | 163 | Des Moines | 40 45 20 N | 091 16 06 W |
| Welton | Populated Place | 212 | Clinton | 41 54 29 N | 090 35 43 W |
| Welton (historical) | Locale | 212 | Clinton | 41 54 29 N | 090 35 43 W |
| Welton Cemetery | Cemetery | 220 | Clinton | 41 54 47 N | 090 36 06 W |
| Welton Elementary School | School | 212 | Clinton | 41 54 29 N | 090 35 43 W |
| Welton Fire Station | Building | 212 | Clinton | 41 54 29 N | 090 35 43 W |
| Welton Post Office | Post Office | 212 | Clinton | 41 54 29 N | 090 35 43 W |
| Welty Cemetery | Cemetery | 312 | Madison | 41 17 25 N | 094 09 16 W |
| Welty Creek | Stream | | Madison | 41 17 27 N | 094 09 03 W |
| Wendell (historical) | Locale | 350 | Cherokee | 42 36 13 N | 095 41 01 W |
| Wendell Johnson Speech and Hearing Center | Building | 215 | Johnson | 41 39 37 N | 091 33 00 W |
| Wendell Post Office (historical) | Post Office | 348 | Cherokee | 42 36 40 N | 095 41 01 W |
| Wendt Regional Cancer Center | Hospital | 276 | Dubuque | 42 29 48 N | 090 41 10 W |
| Wensel Mobile Home Park | Populated Place | 272 | Marion | 41 18 20 N | 093 04 51 W |
| Wentlands Woods | Park | 336 | Floyd | 43 08 45 N | 092 42 26 W |
| Wentworth Post Office (historical) | Post Office | 398 | Mitchell | 43 26 20 N | 092 34 25 W |
| Werner Memorial Woods | Park | 210 | Lee | 40 43 00 N | 091 20 01 W |
| Wertz Cemetery | Cemetery | 225 | Johnson | 41 33 00 N | 091 47 31 W |
| Wescott Park | Park | 355 | Cherokee | 42 44 38 N | 095 33 03 W |
| Wesley | Locale | 381 | Kossuth | 43 05 20 N | 093 59 34 W |
| Wesley | Populated Place | 381 | Kossuth | 43 05 18 N | 093 59 25 W |
| Wesley Chapel | Church | 218 | Henry | 41 01 03 N | 091 29 46 W |
| Wesley Chapel | Church | 379 | Madison | 41 15 27 N | 094 12 47 W |
| Wesley Chapel Cemetery | Cemetery | 275 | Davis | 40 40 30 N | 092 27 55 W |
| Wesley Chapel Cemetery | Cemetery | 260 | Davis | 40 51 52 N | 092 31 60 W |
| Wesley Chapel Cemetery | Cemetery | 345 | Mills | 41 06 07 N | 095 29 57 W |
| Wesley City Hall | Building | 381 | Kossuth | 43 05 17 N | 093 59 32 W |
| Wesley Elementary School | School | 380 | Kossuth | 43 05 03 N | 093 59 39 W |
| Wesley Evergreen Cemetery | Cemetery | 373 | Kossuth | 43 05 10 N | 094 01 06 W |
| Wesley Foundation United Methodist Campus Ministry | Church | 284 | Black Hawk | 42 30 55 N | 092 27 20 W |
| Wesley Landing Strip | Airport | 387 | Hancock | 43 05 12 N | 093 57 53 W |
| Wesley Medical Clinic | Hospital | 381 | Kossuth | 43 05 18 N | 093 59 25 W |
| Wesley Post Office | Post Office | 381 | Kossuth | 43 05 18 N | 093 59 25 W |
| Wesley Public Library | Building | 381 | Kossuth | 43 05 18 N | 093 59 25 W |
| Wesley United Methodist Church | Church | 243 | Benton | 42 09 57 N | 092 01 21 W |
| Wesley United Methodist Church | Church | 376 | Calhoun | 42 32 57 N | 094 41 03 W |
| Wesley United Methodist Church | Church | 351 | Cerro Gordo | 43 08 17 N | 093 11 53 W |
| Wesley United Methodist Church | Church | 215 | Clinton | 41 49 27 N | 090 45 22 W |
| Wesley United Methodist Church | Church | 183 | Muscatine | 41 25 23 N | 091 02 53 W |
| Wesley United Methodist Church | Church | 352 | Plymouth | 42 49 36 N | 096 33 26 W |
| Wesley United Methodist Church | Church | 274 | Polk | 41 35 46 N | 093 36 13 W |
| Wesley United Methodist Church | Church | 212 | Wapello | 41 00 58 N | 092 24 28 W |
| Wesley United Methodist Church | Church | 355 | Woodbury | 42 32 20 N | 096 22 26 W |
| Wesleyan Cemetery | Cemetery | 334 | Fremont | 40 39 00 N | 095 32 01 W |
| Wesleyan Church | Church | 270 | Black Hawk | 42 29 15 N | 092 20 15 W |
| Wesleyan Church | Church | 342 | Floyd | 43 07 45 N | 092 54 06 W |
| Wesleyan Church | Church | 341 | Guthrie | 41 40 38 N | 094 30 02 W |
| Wesleyan Church | Church | 254 | Mahaska | 41 17 13 N | 092 37 21 W |
| Wesleyan Church | Church | 295 | Marshall | 42 01 24 N | 092 54 43 W |
| Wessel Park | Park | 206 | Scott | 41 32 02 N | 090 29 40 W |
| West Albany Post Office (historical) | Post Office | 309 | Fayette | 42 51 55 N | 091 45 51 W |
| West Alexander Post Office (historical) | Post Office | 314 | Lucas | 41 00 03 N | 093 12 31 W |
| West Amana | Populated Place | 237 | Iowa | 41 48 29 N | 091 57 50 W |
| West Auburn | Locale | 301 | Fayette | 43 00 47 N | 091 52 30 W |
| West Auburn Bridge | Bridge | 290 | Fayette | 43 00 58 N | 091 52 44 W |
| West Avenue Baptist Church | Church | 212 | Des Moines | 40 48 02 N | 091 07 47 W |
| West Basswood Creek | Stream | | Dubuque | 42 39 16 N | 090 48 30 W |
| West Beaver Creek | Stream | | Greene | 42 01 27 N | 094 09 19 W |
| West Beaver School (historical) | School | 270 | Dallas | 41 47 16 N | 093 54 34 W |
| West Bend | Locale | 364 | Palo Alto | 42 57 35 N | 094 26 38 W |
| West Bend | Populated Place | 363 | Palo Alto | 42 57 25 N | 094 26 28 W |