| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Racine | city | Iowa | United States | 42.47 | -93.33 | 1148 | |
| Radcliffe | city | Iowa | United States | 42.32 | -93.43 | 1190 | |
| Radio City Mobile Home Park | city | Iowa | United States | 41.63 | -93.60 | 849 | |
| Rake | city | Iowa | United States | 43.48 | -93.92 | 1177 | |
| Raleigh | city | Iowa | United States | 43.34 | -94.87 | 1669 | |
| Ralston | city | Iowa | United States | 42.04 | -94.63 | 1151 | |
| Ramessa (historical) | city | Iowa | United States | 41.81 | -90.41 | 830 | |
| Randalia | city | Iowa | United States | 42.86 | -91.89 | 1105 | |
| Randall | city | Iowa | United States | 42.24 | -93.60 | 1007 | |
| Randolph | city | Iowa | United States | 40.87 | -95.57 | 980 | |
| Rands | city | Iowa | United States | 42.32 | -94.58 | 1177 | |
| Rathbun | city | Iowa | United States | 40.80 | -92.89 | 862 | |
| Ratna (historical) | city | Iowa | United States | 43.33 | -93.56 | 1669 | |
| Raymar | city | Iowa | United States | 42.46 | -92.24 | 866 | |
| Raymond | city | Iowa | United States | 42.47 | -92.22 | 892 | |
| Readlyn | city | Iowa | United States | 42.70 | -92.23 | 1030 | |
| Reasnor | city | Iowa | United States | 41.58 | -93.02 | 830 | |
| Red Line | city | Iowa | United States | 41.72 | -95.15 | 1669 | |
| Red Oak | city | Iowa | United States | 41.01 | -95.23 | 1059 | |
| Redding | city | Iowa | United States | 40.60 | -94.39 | 1099 | |
| Redfield | city | Iowa | United States | 41.59 | -94.20 | 948 | |
| Redman (historical) | city | Iowa | United States | 41.97 | -92.30 | 846 | |
| Reeceville | city | Iowa | United States | 42.13 | -90.30 | 830 | |
| Reeve | city | Iowa | United States | 42.67 | -93.26 | 1200 | |
| Regency Manor Mobile Home Park | city | Iowa | United States | 41.52 | -93.59 | 859 | |
| Regency of Iowa Mobile Home Park | city | Iowa | United States | 41.23 | -95.87 | 974 | |
| Regency of Sioux City | city | Iowa | United States | 42.49 | -96.35 | 1197 | |
| Registry Park | city | Iowa | United States | 43.15 | -93.26 | 1200 | |
| Reilly Settlement | city | Iowa | United States | 43.16 | -92.18 | 1210 | |
| Reinbeck | city | Iowa | United States | 42.32 | -92.60 | 967 | |
| Rembrandt | city | Iowa | United States | 42.83 | -95.17 | 1669 | |
| Remicker (historical) | city | Iowa | United States | 42.48 | -93.70 | 1207 | |
| Remsen | city | Iowa | United States | 42.81 | -95.97 | 1669 | |
| Renwick | city | Iowa | United States | 42.83 | -93.98 | 1102 | |
| Republic | city | Iowa | United States | 42.95 | -92.40 | 1076 | |
| Rexfield | city | Iowa | United States | 41.08 | -92.95 | 869 | |
| Rhodes | city | Iowa | United States | 41.93 | -93.19 | 1010 | |
| Riceville | city | Iowa | United States | 43.36 | -92.55 | 1233 | |
| Riceville (historical) | city | Iowa | United States | 43.38 | -92.56 | 1227 | |
| Richard | city | Iowa | United States | 42.43 | -94.53 | 1194 | |
| Richfield | city | Iowa | United States | 42.95 | -92.06 | 1151 | |
| Richland | city | Iowa | United States | 41.19 | -91.99 | 830 | |
| Richmond | city | Iowa | United States | 41.45 | -91.70 | 830 | |
| Rickardsville | city | Iowa | United States | 42.58 | -90.88 | 898 | |
| Ricketts | city | Iowa | United States | 42.13 | -95.58 | 1669 | |
| Rider | city | Iowa | United States | 41.64 | -93.77 | 954 | |
| Ridgeport | city | Iowa | United States | 42.18 | -93.92 | 1151 | |
| Ridgeview Park | city | Iowa | United States | 41.59 | -90.61 | 830 | |
| Ridgeway | city | Iowa | United States | 43.30 | -91.99 | 1669 | |
| Ridley | city | Iowa | United States | 43.06 | -91.51 | 1151 | |
| Ridotto | city | Iowa | United States | 42.83 | -94.68 | 1236 | |
| Riggs | city | Iowa | United States | 42.01 | -90.53 | 830 | |
| Rinard | city | Iowa | United States | 42.34 | -94.49 | 1161 | |
| Ringgold (historical) | city | Iowa | United States | 40.58 | -94.19 | 1118 | |
| Ringsted | city | Iowa | United States | 43.29 | -94.51 | 1669 | |
| Rippey | city | Iowa | United States | 41.93 | -94.20 | 1049 | |
| Rising Sun | city | Iowa | United States | 41.59 | -93.48 | 935 | |
| Ritter | city | Iowa | United States | 43.24 | -95.82 | 1669 | |
| River Junction | city | Iowa | United States | 41.49 | -91.50 | 830 | |
| River Sioux | city | Iowa | United States | 41.81 | -96.05 | 1033 | |
| River Vista Trailer Park | city | Iowa | United States | 41.61 | -94.01 | 895 | |
| Rivercrest Estates | city | Iowa | United States | 41.68 | -90.34 | 830 | |
| Riverdale | city | Iowa | United States | 41.54 | -90.46 | 830 | |
| Riverforest Trailer Park | city | Iowa | United States | 42.47 | -92.30 | 830 | |
| Riverside | city | Iowa | United States | 41.48 | -91.58 | 830 | |
| Riverside | city | Iowa | United States | 42.52 | -96.48 | 1108 | |
| Riverton | city | Iowa | United States | 40.69 | -95.57 | 1049 | |
| Roberts | city | Iowa | United States | 42.43 | -94.17 | 1118 | |
| Robertson | city | Iowa | United States | 42.51 | -93.13 | 1174 | |
| Robins | city | Iowa | United States | 42.07 | -91.67 | 843 | |
| Robinson | city | Iowa | United States | 42.34 | -91.58 | 951 | |
| Robison-Whitaker Acres | city | Iowa | United States | 41.93 | -93.44 | 912 | |
| Rochester | city | Iowa | United States | 41.67 | -91.16 | 830 | |
| Rock Creek | city | Iowa | United States | 43.23 | -92.92 | 1148 | |
| Rock Falls | city | Iowa | United States | 43.21 | -93.08 | 1085 | |
| Rock Rapids | city | Iowa | United States | 43.43 | -96.18 | 1669 | |
| Rock Valley | city | Iowa | United States | 43.21 | -96.30 | 1246 | |
| Rockaway (historical) | city | Iowa | United States | 42.10 | -90.41 | 830 | |
| Rockdale | city | Iowa | United States | 42.46 | -90.68 | 830 | |
| Rockford | city | Iowa | United States | 43.05 | -92.95 | 1000 | |
| Rockingham (historical) | city | Iowa | United States | 41.48 | -90.63 | 830 | |
| Rocklyn Mobile Home | city | Iowa | United States | 41.62 | -93.71 | 951 | |
| Rockton | city | Iowa | United States | 42.05 | -92.84 | 872 | |
| Rockville | city | Iowa | United States | 42.42 | -91.14 | 898 | |
| Rockwell | city | Iowa | United States | 42.99 | -93.19 | 1138 | |
| Rockwell City | city | Iowa | United States | 42.40 | -94.63 | 1213 | |
| Rodman | city | Iowa | United States | 43.03 | -94.53 | 1184 | |
| Rodney | city | Iowa | United States | 42.21 | -95.95 | 1079 | |
| Roelyn | city | Iowa | United States | 42.41 | -94.36 | 1161 | |
| Rogers | city | Iowa | United States | 42.20 | -91.58 | 925 | |
| Rogersville | city | Iowa | United States | 42.11 | -92.23 | 964 | |
| Roland | city | Iowa | United States | 42.17 | -93.50 | 1049 | |
| Rolfe | city | Iowa | United States | 42.81 | -94.53 | 1151 | |
| Rolfe (historical) | city | Iowa | United States | 42.84 | -94.48 | 1151 | |
| Rolling Hills Mobile Home Park | city | Iowa | United States | 41.91 | -93.40 | 948 | |
| Rome | city | Iowa | United States | 40.98 | -91.68 | 830 | |
| Rorbeck | city | Iowa | United States | 41.55 | -95.13 | 1249 | |
| Roscoe | city | Iowa | United States | 41.02 | -91.26 | 830 | |
| Rose | city | Iowa | United States | 42.58 | -90.70 | 830 | |
| Rose Hill | city | Iowa | United States | 41.32 | -92.46 | 830 | |
| Rosedale | city | Iowa | United States | 42.21 | -93.72 | 1095 | |
| Roselle | city | Iowa | United States | 42.00 | -94.92 | 1669 | |
| Rosetta (historical) | city | Iowa | United States | 41.41 | -92.36 | 830 | |
| Roseville | city | Iowa | United States | 43.01 | -92.81 | 1000 | |
| Ross | city | Iowa | United States | 41.77 | -94.92 | 1669 | |
| Rosserdale | city | Iowa | United States | 41.40 | -94.41 | 1669 | |
| Rossie | city | Iowa | United States | 43.01 | -95.19 | 1669 | |
| Rossville | city | Iowa | United States | 43.19 | -91.38 | 1207 | |
| Rough Woods Hill | city | Iowa | United States | 42.36 | -93.21 | 1056 | |
| Rowan | city | Iowa | United States | 42.74 | -93.55 | 1207 | |
| Rowley | city | Iowa | United States | 42.37 | -91.84 | 958 | |
| Roxie | city | Iowa | United States | 42.85 | -92.42 | 1076 | |
| Royal | city | Iowa | United States | 43.07 | -95.28 | 1669 | |
| Rubens Siding | city | Iowa | United States | 42.82 | -94.58 | 1187 | |
| Rubio | city | Iowa | United States | 41.22 | -91.94 | 830 | |
| Ruble | city | Iowa | United States | 42.81 | -96.41 | 1669 | |
| Rudd | city | Iowa | United States | 43.13 | -92.91 | 1102 | |
| Runnells | city | Iowa | United States | 41.51 | -93.36 | 830 | |
| Rushville | city | Iowa | United States | 41.76 | -92.95 | 918 | |
| Rusk | city | Iowa | United States | 42.67 | -94.74 | 1669 | |
| Russell | city | Iowa | United States | 40.98 | -93.20 | 1010 | |
| Russellville (historical) | city | Iowa | United States | 40.68 | -92.55 | 951 | |
| Russellville (historical) | city | Iowa | United States | 40.78 | -91.65 | 830 | |
| Rustic Ridge Mobile Home Park | city | Iowa | United States | 41.57 | -90.62 | 830 | |
| Ruthven | city | Iowa | United States | 43.13 | -94.90 | 1669 | |
| Rutland | city | Iowa | United States | 42.76 | -94.30 | 1099 | |
| Rutledge | city | Iowa | United States | 41.06 | -92.42 | 849 | |
| Ryan | city | Iowa | United States | 42.35 | -91.48 | 1000 |