| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Udell | city | Iowa | United States | 40.78083 | -92.74194 | 977 | 798 |
| Ulmer | city | Iowa | United States | 42.26778 | -94.94972 | 1279 | 867 |
| Underwood | city | Iowa | United States | 41.38694 | -95.67639 | 1148 | 1089 |
| Union | city | Iowa | United States | 42.24556 | -93.06444 | 951 | 761 |
| Union Burg historical | city | Iowa | United States | 41.53917 | -95.64139 | 1223 | 778 |
| Union Center | city | Iowa | United States | 42.6925 | -96.05806 | 1407 | 574 |
| Union Mills | city | Iowa | United States | 41.4525 | -92.57056 | 849 | 729 |
| Unionville | city | Iowa | United States | 40.81833 | -92.69528 | 951 | 798 |
| Unique | city | Iowa | United States | 42.71722 | -94.345 | 1158 | 550 |
| University Heights | city | Iowa | United States | 41.655 | -91.55667 | 784 | 54427 |
| University Park | city | Iowa | United States | 41.28694 | -92.61833 | 849 | 9214 |
| Updegraff | city | Iowa | United States | 42.68389 | -91.23694 | 1095 | 735 |
| Upper South Amana | city | Iowa | United States | 41.76583 | -91.96778 | 898 | 1101 |
| Urbana | city | Iowa | United States | 42.22417 | -91.87417 | 905 | 1377 |
| Urbandale | city | Iowa | United States | 41.62667 | -93.71194 | 912 | 74699 |
| Ute | city | Iowa | United States | 42.05028 | -95.70611 | 1207 | 428 |
| Utica | city | Iowa | United States | 40.81472 | -91.83472 | 708 | 826 |
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