| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Kalo | city | Iowa | United States | 42.43 | -94.13 | 1040 | |
| Kalona | city | Iowa | United States | 41.48 | -91.71 | 830 | |
| Kammerer Trailer Court | city | Iowa | United States | 41.37 | -91.09 | 830 | |
| Kamrar | city | Iowa | United States | 42.39 | -93.73 | 1128 | |
| Kanawha | city | Iowa | United States | 42.94 | -93.79 | 1207 | |
| Keb (historical) | city | Iowa | United States | 41.08 | -92.46 | 830 | |
| Kellerton | city | Iowa | United States | 40.71 | -94.05 | 1200 | |
| Kelley | city | Iowa | United States | 41.95 | -93.67 | 1030 | |
| Kellogg | city | Iowa | United States | 41.72 | -92.91 | 849 | |
| Kemling (historical) | city | Iowa | United States | 41.17 | -95.28 | 1223 | |
| Kemper | city | Iowa | United States | 40.74 | -91.12 | 830 | |
| Kendallville | city | Iowa | United States | 43.44 | -92.04 | 1059 | |
| Kenfield | city | Iowa | United States | 41.58 | -94.72 | 1669 | |
| Kennebec | city | Iowa | United States | 42.10 | -96.01 | 1056 | |
| Kennedy | city | Iowa | United States | 41.61 | -94.12 | 951 | |
| Kensett | city | Iowa | United States | 43.35 | -93.21 | 1210 | |
| Kent | city | Iowa | United States | 40.95 | -94.45 | 1249 | |
| Kentner | city | Iowa | United States | 42.17 | -94.82 | 1669 | |
| Kenwood | city | Iowa | United States | 42.01 | -95.51 | 1669 | |
| Keokuk | city | Iowa | United States | 40.40 | -91.38 | 830 | |
| Keokukas | city | Iowa | United States | 40.40 | -91.38 | 830 | |
| Keomah Village | city | Iowa | United States | 41.29 | -92.54 | 849 | |
| Keosauqua | city | Iowa | United States | 40.73 | -91.96 | 830 | |
| Keota | city | Iowa | United States | 41.36 | -91.95 | 830 | |
| Kesley | city | Iowa | United States | 42.66 | -92.91 | 1003 | |
| Keswick | city | Iowa | United States | 41.45 | -92.24 | 853 | |
| Keteban Switch (historical) | city | Iowa | United States | 40.65 | -91.70 | 830 | |
| Key West | city | Iowa | United States | 42.45 | -90.68 | 830 | |
| Keystone | city | Iowa | United States | 42.00 | -92.20 | 905 | |
| Kidder | city | Iowa | United States | 42.46 | -90.93 | 948 | |
| Kilbourn | city | Iowa | United States | 40.81 | -91.97 | 830 | |
| Killduff | city | Iowa | United States | 41.61 | -92.90 | 948 | |
| Kimballton | city | Iowa | United States | 41.63 | -95.07 | 1669 | |
| Kimze | city | Iowa | United States | 41.99 | -95.39 | 1200 | |
| King | city | Iowa | United States | 42.41 | -90.59 | 1092 | |
| Kingsley | city | Iowa | United States | 42.59 | -95.97 | 1249 | |
| Kingston | city | Iowa | United States | 40.81 | -93.84 | 1148 | |
| Kingston | city | Iowa | United States | 40.98 | -91.04 | 830 | |
| Kinross | city | Iowa | United States | 41.46 | -91.99 | 830 | |
| Kirkman | city | Iowa | United States | 41.73 | -95.27 | 1220 | |
| Kirkville | city | Iowa | United States | 41.15 | -92.50 | 830 | |
| Kirkwood Estates | city | Iowa | United States | 41.92 | -91.65 | 830 | |
| Kiron | city | Iowa | United States | 42.20 | -95.33 | 1669 | |
| Klemme | city | Iowa | United States | 43.01 | -93.60 | 1200 | |
| Kline | city | Iowa | United States | 40.92 | -91.21 | 830 | |
| Klinger | city | Iowa | United States | 42.66 | -92.22 | 1000 | |
| Klondike | city | Iowa | United States | 43.39 | -96.52 | 1249 | |
| Knapp Mobile Home Park | city | Iowa | United States | 42.54 | -90.68 | 830 | |
| Knierim | city | Iowa | United States | 42.46 | -94.46 | 1174 | |
| Knittel | city | Iowa | United States | 42.72 | -92.26 | 1003 | |
| Knoke | city | Iowa | United States | 42.52 | -94.76 | 1233 | |
| Knowlton | city | Iowa | United States | 40.83 | -94.33 | 1092 | |
| Knoxville | city | Iowa | United States | 41.32 | -93.11 | 898 | |
| Konigsmark | city | Iowa | United States | 41.89 | -91.69 | 875 | |
| Kossuth | city | Iowa | United States | 41.01 | -91.13 | 830 | |
| Koszta | city | Iowa | United States | 41.83 | -92.21 | 830 | |
| Kota Sioux | city | Iowa | United States | 42.50 | -96.40 | 1125 |