| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cairo | city | Iowa | United States | 41.18 | -91.33 | 830 | |
| Calamus | city | Iowa | United States | 41.83 | -90.76 | 830 | |
| Caldwell Siding | city | Iowa | United States | 41.45 | -94.24 | 1154 | |
| Caledonia (historical) | city | Iowa | United States | 40.62 | -94.16 | 1049 | |
| Calhoun | city | Iowa | United States | 41.63 | -95.90 | 1020 | |
| California Junction | city | Iowa | United States | 41.56 | -95.99 | 1003 | |
| Callender | city | Iowa | United States | 42.36 | -94.30 | 1145 | |
| Calmar | city | Iowa | United States | 43.18 | -91.86 | 1233 | |
| Caloma | city | Iowa | United States | 41.28 | -93.31 | 951 | |
| Calumet | city | Iowa | United States | 42.95 | -95.55 | 1669 | |
| Camanche | city | Iowa | United States | 41.79 | -90.26 | 830 | |
| Cambria | city | Iowa | United States | 40.84 | -93.40 | 1085 | |
| Cambridge | city | Iowa | United States | 41.90 | -93.53 | 846 | |
| Cameron | city | Iowa | United States | 42.67 | -90.87 | 830 | |
| Cameron | city | Iowa | United States | 43.08 | -93.19 | 1246 | |
| Camp Dodge | city | Iowa | United States | 41.70 | -93.71 | 928 | |
| Campbell | city | Iowa | United States | 41.61 | -93.79 | 951 | |
| Canby | city | Iowa | United States | 41.42 | -94.57 | 1669 | |
| Candlelight Village Mobile Home Park | city | Iowa | United States | 42.99 | -96.06 | 1669 | |
| Canfield | city | Iowa | United States | 42.51 | -92.14 | 974 | |
| Canoe | city | Iowa | United States | 43.35 | -91.65 | 862 | |
| Canton | city | Iowa | United States | 42.16 | -90.90 | 830 | |
| Cantril | city | Iowa | United States | 40.64 | -92.07 | 830 | |
| Capitol Heights | city | Iowa | United States | 41.63 | -93.52 | 915 | |
| Carbon | city | Iowa | United States | 41.05 | -94.82 | 1053 | |
| Carbon | city | Iowa | United States | 40.90 | -92.42 | 830 | |
| Carbondale | city | Iowa | United States | 41.58 | -93.50 | 892 | |
| Carl | city | Iowa | United States | 41.12 | -94.66 | 1669 | |
| Carlisle | city | Iowa | United States | 41.50 | -93.49 | 830 | |
| Carlton Mobile Home Court | city | Iowa | United States | 42.05 | -91.47 | 830 | |
| Carmel | city | Iowa | United States | 43.13 | -96.24 | 1669 | |
| Carnarvon | city | Iowa | United States | 42.25 | -95.02 | 1669 | |
| Carnes | city | Iowa | United States | 42.93 | -96.06 | 1669 | |
| Carney | city | Iowa | United States | 41.69 | -93.60 | 944 | |
| Carney | city | Iowa | United States | 43.03 | -92.81 | 1030 | |
| Carnforth | city | Iowa | United States | 41.72 | -92.35 | 830 | |
| Carpenter | city | Iowa | United States | 43.41 | -93.01 | 1207 | |
| Carriage Place | city | Iowa | United States | 41.59 | -90.43 | 830 | |
| Carroll | city | Iowa | United States | 42.07 | -94.87 | 1669 | |
| Carroll Community Estates | city | Iowa | United States | 42.06 | -94.85 | 1249 | |
| Carrollton | city | Iowa | United States | 41.95 | -94.75 | 1213 | |
| Carrville | city | Iowa | United States | 43.01 | -92.57 | 1000 | |
| Carson | city | Iowa | United States | 41.24 | -95.42 | 1148 | |
| Carter Lake | city | Iowa | United States | 41.29 | -95.92 | 984 | |
| Cartersville | city | Iowa | United States | 42.99 | -93.08 | 1194 | |
| Cascade | city | Iowa | United States | 42.30 | -91.01 | 843 | |
| Casey | city | Iowa | United States | 41.50 | -94.52 | 1223 | |
| Casino Beach | city | Iowa | United States | 42.62 | -95.23 | 1669 | |
| Cass | city | Iowa | United States | 42.19 | -91.35 | 951 | |
| Castalia | city | Iowa | United States | 43.11 | -91.68 | 1213 | |
| Castana | city | Iowa | United States | 42.07 | -95.91 | 1099 | |
| Castle Grove | city | Iowa | United States | 42.26 | -91.32 | 898 | |
| Castle Hill | city | Iowa | United States | 42.51 | -92.40 | 902 | |
| Cathedral Square | city | Iowa | United States | 42.49 | -90.68 | 830 | |
| Cattese | city | Iowa | United States | 42.46 | -90.63 | 830 |