La Porte City to Lytton
(Click a column header to sort)
| City | Population |
| La Porte City | 2,321 |
| Lacona | 360 |
| Ladora | 287 |
| Lake City | 1,827 |
| Lake Mills | 2,140 |
| Lake Park | 1,023 |
| Lake View | 1,317 |
| Lakeside | 484 |
| Lakota | 255 |
| Lambs Grove | 225 |
| Lamoni | 2,444 |
| Lamont | 503 |
| LaMotte | 272 |
| Lanesboro | 152 |
| Lansing | 1,012 |
| Larchwood | 788 |
| Larrabee | 149 |
| Latimer | 535 |
| Laurel | 266 |
| Laurens | 1,476 |
| Lawler | 461 |
| Lawton | 697 |
| Le Grand | 883 |
| Le Mars | 9,237 |
| LeClaire | 2,868 |
| Ledyard | 147 |
| Lehigh | 497 |
| Leighton | 153 |
| Leland | 258 |
| Lenox | 1,401 |
| Leon | 1,983 |
| LeRoy | 13 |
| Lester | 251 |
| Letts | 392 |
| Lewis | 438 |
| Libertyville | 325 |
| Lidderdale | 186 |
| Lime Springs | 496 |
| Lincoln | 182 |
| Linden | 226 |
| Lineville | 273 |
| Linn Grove | 211 |
| Lisbon | 1,898 |
| Liscomb | 272 |
| Little Rock | 489 |
| Little Sioux | 217 |
| Livermore | 431 |
| Lockridge | 275 |
| Logan | 1,545 |
| Lohrville | 431 |
| Lone Rock | 157 |
| Lone Tree | 1,151 |
| Long Grove | 597 |
| Lorimor | 427 |
| Lost Nation | 497 |
| Lovilia | 583 |
| Low Moor | 240 |
| Lowden | 794 |
| Lu Verne | 299 |
| Luana | 249 |
| Lucas | 243 |
| Luther | 158 |
| Luxemburg | 246 |
| Luzerne | 105 |
| Lynnville | 366 |
| Lytton | 305 |
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