Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| New Testament Church | Church | 225 | Linn | 41 58 35 N | 091 39 05 W |
| New Testament Church | Church | 310 | Lucas | 41 03 13 N | 093 18 11 W |
| New Testament Church of Christ | Church | 294 | Page | 40 46 11 N | 095 23 05 W |
| New Town Post Office (historical) | Post Office | 355 | Pottawattamie | 41 27 13 N | 095 20 11 W |
| New Vienna | Populated Place | 305 | Dubuque | 42 32 53 N | 091 06 51 W |
| New Vienna Community Hall | Building | 309 | Dubuque | 42 32 57 N | 091 06 50 W |
| New Vienna Fire Department | Building | 309 | Dubuque | 42 32 57 N | 091 06 50 W |
| New Vienna Post Office | Post Office | 306 | Dubuque | 42 32 54 N | 091 06 50 W |
| New Virginia | Populated Place | 332 | Warren | 41 10 56 N | 093 43 44 W |
| New Virginia (historical) | Locale | 315 | Warren | 41 11 03 N | 093 44 08 W |
| New Virginia Christian Church | Church | 332 | Warren | 41 10 58 N | 093 43 44 W |
| New Virginia Fire Department | Building | 330 | Warren | 41 10 50 N | 093 43 51 W |
| New Virginia Library | Building | 330 | Warren | 41 10 50 N | 093 43 51 W |
| New Virginia Post Office | Post Office | 330 | Warren | 41 10 50 N | 093 43 51 W |
| New Virginia United Methodist Church | Church | 330 | Warren | 41 10 50 N | 093 43 51 W |
| New Wine Park | Park | 296 | Dubuque | 42 31 30 N | 091 07 40 W |
| New York | Populated Place | 322 | Wayne | 40 51 06 N | 093 15 36 W |
| New York Branch | Stream | | Hamilton | 42 23 27 N | 093 26 02 W |
| New York Cemetery | Cemetery | 309 | Wayne | 40 50 59 N | 093 14 15 W |
| New York Post Office (historical) | Post Office | 322 | Wayne | 40 51 06 N | 093 15 36 W |
| New Zion Baptist Church | Church | 260 | Black Hawk | 42 31 28 N | 092 21 56 W |
| New Zion Church | Church | 331 | Wayne | 40 45 10 N | 093 25 25 W |
| Newark | Locale | 346 | Webster | 42 34 34 N | 093 59 59 W |
| Newark Township Cemetery | Cemetery | 348 | Webster | 42 36 08 N | 094 02 28 W |
| Newbern | Populated Place | 304 | Marion | 41 09 39 N | 093 18 31 W |
| Newbern Cemetery | Cemetery | 299 | Warren | 41 09 40 N | 093 20 23 W |
| Newbern Post Office (historical) | Post Office | 304 | Marion | 41 09 39 N | 093 18 31 W |
| Newborn and Pediatric Specialists Center | Hospital | 278 | Polk | 41 35 51 N | 093 37 37 W |
| Newbrough Airport | Airport | 363 | Hancock | 43 04 04 N | 093 54 08 W |
| Newburg | Locale | 314 | Jasper | 41 49 05 N | 092 46 31 W |
| Newburg | Locale | 351 | Mitchell | 43 23 23 N | 092 56 36 W |
| Newburg | Populated Place | 313 | Jasper | 41 49 07 N | 092 46 28 W |
| Newburg Cemetery | Cemetery | 360 | Mitchell | 43 24 52 N | 093 00 19 W |
| Newburg Post Office (historical) | Post Office | 313 | Jasper | 41 49 07 N | 092 46 28 W |
| Newburg United Church of Christ | Church | 314 | Jasper | 41 49 08 N | 092 46 32 W |
| Newburgh Post Office (historical) | Post Office | 351 | Mitchell | 43 23 23 N | 092 56 36 W |
| Newcom Creek | Stream | | Crawford | 42 11 28 N | 095 16 09 W |
| Newcomb Memorial Church | Church | 214 | Scott | 41 32 46 N | 090 36 01 W |
| Newell | Locale | 384 | Buena Vista | 42 36 26 N | 095 00 11 W |
| Newell | Populated Place | 385 | Buena Vista | 42 36 20 N | 095 00 10 W |
| Newell Catholic Cemetery | Cemetery | 392 | Buena Vista | 42 36 52 N | 095 01 56 W |
| Newell Cemetery | Cemetery | 280 | Black Hawk | 42 37 60 N | 092 29 26 W |
| Newell Cemetery | Cemetery | 388 | Buena Vista | 42 36 45 N | 094 59 59 W |
| Newell Cemetery | Cemetery | 205 | Louisa | 41 17 32 N | 091 15 17 W |
| Newell City Hall | Building | 386 | Buena Vista | 42 36 20 N | 095 00 03 W |
| Newell Cooperative Elevator | Locale | 385 | Buena Vista | 42 36 24 N | 095 00 11 W |
| Newell Fonda Community School | School | 372 | Pocahontas | 42 34 58 N | 094 50 53 W |
| Newell Golf Course | Locale | 387 | Buena Vista | 42 36 39 N | 094 59 51 W |
| Newell Good Samaritan Center | Hospital | 382 | Buena Vista | 42 36 10 N | 095 00 31 W |
| Newell Post Office | Post Office | 385 | Buena Vista | 42 36 21 N | 095 00 07 W |
| Newell Public Library | Building | 386 | Buena Vista | 42 36 20 N | 095 00 03 W |
| Newell-Fonda Community School | School | 384 | Buena Vista | 42 36 20 N | 094 59 52 W |
| Newhall | Populated Place | 267 | Benton | 41 59 44 N | 091 58 04 W |
| Newhall (historical) | Locale | 266 | Benton | 41 59 45 N | 091 58 06 W |
| Newhall City Hall | Building | 268 | Benton | 41 59 41 N | 091 58 02 W |
| Newhall Fire Department | Building | 266 | Benton | 41 59 42 N | 091 58 11 W |
| Newhall Post Office | Post Office | 268 | Benton | 41 59 41 N | 091 58 02 W |
| Newhall Public Library | Building | 268 | Benton | 41 59 41 N | 091 58 02 W |
| Newkirk | Populated Place | 436 | Sioux | 43 04 12 N | 095 58 41 W |
| Newkirk Cemetery | Cemetery | 437 | Sioux | 43 03 58 N | 095 58 42 W |
| Newkirk Post Office (historical) | Post Office | 436 | Sioux | 43 04 12 N | 095 58 41 W |
| Newkirk Reformed Church | Church | 437 | Sioux | 43 04 11 N | 095 58 39 W |
| Newkirk School | School | 235 | Keokuk | 41 17 50 N | 092 15 60 W |
| Newlons Grove Cemetery | Cemetery | 395 | Cass | 41 14 23 N | 094 56 15 W |
| Newlons Grove Post Office (historical) | Post Office | 367 | Cass | 41 14 37 N | 094 55 44 W |
| Newman Catholic Elementary School | School | 347 | Cerro Gordo | 43 08 51 N | 093 11 41 W |
| Newman Catholic High School | School | 358 | Cerro Gordo | 43 07 60 N | 093 14 21 W |
| Newman Catholic Student Center | Church | 210 | Johnson | 41 39 45 N | 091 32 01 W |
| Newman Community | Church | 296 | Polk | 41 35 60 N | 093 39 19 W |
| Newport | Populated Place | 258 | Johnson | 41 44 19 N | 091 28 27 W |
| Newport | Populated Place | 229 | Jones | 42 02 43 N | 091 12 03 W |
| Newport | Populated Place | 220 | Louisa | 41 05 20 N | 091 10 59 W |
| Newport (historical) | Locale | 220 | Louisa | 41 05 20 N | 091 10 59 W |
| Newport Centre Post Office (historical) | Post Office | 257 | Johnson | 41 44 35 N | 091 28 56 W |
| Newport Post Office (historical) | Post Office | 258 | Johnson | 41 44 19 N | 091 28 27 W |
| Newport Post Office (historical) | Post Office | 220 | Louisa | 41 05 20 N | 091 10 59 W |
| Newton | Locale | 288 | Jasper | 41 42 14 N | 093 03 31 W |
| Newton | Populated Place | 290 | Jasper | 41 41 59 N | 093 02 53 W |
| Newton Arboretum and Botanical Gardens | Locale | 285 | Jasper | 41 42 15 N | 093 00 56 W |
| Newton Cemetery | Cemetery | 287 | Davis | 40 37 00 N | 092 32 01 W |
| Newton Cemetery | Cemetery | 386 | Pottawattamie | 41 27 30 N | 095 19 01 W |
| Newton Christian School | School | 290 | Jasper | 41 42 19 N | 093 02 25 W |
| Newton Church of God | Church | 290 | Jasper | 41 41 54 N | 093 03 31 W |
| Newton Clinic | Hospital | 289 | Jasper | 41 42 11 N | 093 03 05 W |
| Newton Country Club | Locale | 287 | Jasper | 41 41 40 N | 093 04 11 W |
| Newton Fire Department | Building | 291 | Jasper | 41 41 58 N | 093 03 27 W |
| Newton Foot and Ankle Clinic | Hospital | 291 | Jasper | 41 42 01 N | 093 03 19 W |
| Newton Library | Building | 291 | Jasper | 41 42 04 N | 093 03 15 W |
| Newton Mall | Locale | 281 | Jasper | 41 41 51 N | 093 02 02 W |
| Newton Municipal Airport | Airport | 288 | Jasper | 41 40 27 N | 093 01 18 W |
| Newton Police Department | Building | 291 | Jasper | 41 41 58 N | 093 03 27 W |
| Newton Post Office | Post Office | 292 | Jasper | 41 42 01 N | 093 03 09 W |
| Newton Senior High School | School | 286 | Jasper | 41 41 28 N | 093 02 58 W |
| Newton Seventh Day Adventist Church | Church | 291 | Jasper | 41 42 27 N | 093 02 43 W |
| Newton Speedway | Locale | 293 | Jasper | 41 43 07 N | 093 02 51 W |
| Newton USA Healthcare Center | Hospital | 280 | Jasper | 41 41 35 N | 093 03 06 W |
| Newtons Grove | Locale | 387 | Cass | 41 14 40 N | 094 54 54 W |
| Newtonville | Locale | 297 | Buchanan | 42 21 16 N | 091 39 21 W |
| Newtonville Post Office (historical) | Post Office | 297 | Buchanan | 42 20 50 N | 091 40 31 W |
| Newtown (historical) | Populated Place | 355 | Pottawattamie | 41 27 13 N | 095 20 11 W |
| Nezeka Post Office (historical) | Post Office | 189 | Allamakee | 43 05 05 N | 091 10 50 W |
| Nezekaw Point | Cliff | 261 | Allamakee | 43 05 00 N | 091 10 55 W |
| Nibeck Wildlife Preserve | Park | 305 | Buchanan | 42 37 40 N | 091 54 16 W |
| Nicholas J Schrup Library | Building | 250 | Dubuque | 42 30 32 N | 090 41 27 W |
| Nicholls Cemetery | Cemetery | 315 | Marshall | 41 56 55 N | 093 11 04 W |
| Nichols | Populated Place | 193 | Muscatine | 41 28 52 N | 091 18 28 W |
| Nichols (historical) | Locale | 192 | Muscatine | 41 28 53 N | 091 18 32 W |
| Nichols Airport | Airport | 290 | Black Hawk | 42 18 60 N | 092 17 01 W |
| Nichols Cemetery | Cemetery | 192 | Muscatine | 41 28 46 N | 091 16 47 W |
| Nichols City Hall | Building | 192 | Muscatine | 41 28 53 N | 091 18 31 W |