| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Roach | city | Missouri | United States | 37.99389 | -92.83611 | 905 | 1648 |
| Roads | city | Missouri | United States | 39.46667 | -93.70111 | 698 | 355 |
| Roanoke | city | Missouri | United States | 39.31694 | -92.68861 | 859 | 948 |
| Robbins | city | Missouri | United States | 38.90639 | -93.80778 | 875 | 1137 |
| Robertson | city | Missouri | United States | 38.76417 | -90.38194 | 597 | 91961 |
| Robertsville | city | Missouri | United States | 38.41472 | -90.81389 | 551 | 4845 |
| Robidoux | city | Missouri | United States | 38.05222 | -90.76833 | 774 | 1783 |
| Roblee | city | Missouri | United States | 39.37944 | -90.94139 | 465 | 660 |
| Roby | city | Missouri | United States | 37.51556 | -92.13889 | 1397 | 944 |
| Rocheport | city | Missouri | United States | 38.98 | -92.56389 | 597 | 1437 |
| Rochester | city | Missouri | United States | 39.91222 | -94.68444 | 961 | 1486 |
| Rock | city | Missouri | United States | 38.04722 | -94.50889 | 816 | 445 |
| Rock Creek | city | Missouri | United States | 38.43972 | -90.4975 | 793 | 37711 |
| Rock Creek Junction | city | Missouri | United States | 39.11361 | -94.47944 | 777 | 97180 |
| Rock Ford | city | Missouri | United States | 38.32306 | -91.25639 | 656 | 1826 |
| Rock Hill | city | Missouri | United States | 38.6075 | -90.37833 | 508 | 118185 |
| Rock Port | city | Missouri | United States | 40.41111 | -95.51667 | 925 | 523 |
| Rock Prairie | city | Missouri | United States | 37.48306 | -93.2025 | 1099 | 1792 |
| Rock Springs | city | Missouri | United States | 37.75639 | -90.48333 | 997 | 9386 |
| Rock Springs subdivision | city | Missouri | United States | 38.62889 | -90.27722 | 488 | 289505 |
| Rockaway Beach | city | Missouri | United States | 36.69917 | -93.15972 | 898 | 2146 |
| Rockbridge | city | Missouri | United States | 36.78944 | -92.40889 | 862 | 516 |
| Rockford | city | Missouri | United States | 39.34639 | -92.91417 | 695 | 755 |
| Rockford Beach | city | Missouri | United States | 38.42194 | -90.59 | 429 | 13905 |
| Rockford historical | city | Missouri | United States | 38.56444 | -94.23778 | 820 | 1592 |
| Rockingham | city | Missouri | United States | 39.35667 | -93.78222 | 734 | 477 |
| Rockview | city | Missouri | United States | 37.20222 | -89.63944 | 492 | 4078 |
| Rockville | city | Missouri | United States | 38.07139 | -94.07944 | 774 | 551 |
| Rocky Comfort | city | Missouri | United States | 36.74639 | -94.09028 | 1295 | 1032 |
| Rocky Ford historical | city | Missouri | United States | 38.03583 | -94.19444 | 728 | 606 |
| Rocky Mount | city | Missouri | United States | 38.27222 | -92.71944 | 833 | 2935 |
| Rocky Mount | city | Missouri | United States | 38.32417 | -92.665 | 889 | 3787 |
| Rocky Ridge Ranch | city | Missouri | United States | 37.93028 | -90.23833 | 626 | 1324 |
| Rodger Ford historical | city | Missouri | United States | 37.95944 | -92.83222 | 859 | 2795 |
| Rogersville | city | Missouri | United States | 37.11694 | -93.05556 | 1466 | 2469 |
| Rolla | city | Missouri | United States | 37.95139 | -91.77111 | 1099 | 17439 |
| Romance | city | Missouri | United States | 36.71694 | -92.5025 | 1020 | 584 |
| Rombauer | city | Missouri | United States | 36.84306 | -90.28 | 347 | 1414 |
| Rome | city | Missouri | United States | 36.84139 | -92.77333 | 997 | 716 |
| Rondo | city | Missouri | United States | 37.76611 | -93.44972 | 1000 | 1505 |
| Rookins | city | Missouri | United States | 37.83889 | -93.75722 | 793 | 456 |
| Roosevelt | city | Missouri | United States | 36.83056 | -92.12333 | 793 | 616 |
| Roosterville | city | Missouri | United States | 39.29528 | -94.43639 | 1000 | 8909 |
| Rosati | city | Missouri | United States | 38.02694 | -91.53083 | 997 | 2678 |
| Roscoe | city | Missouri | United States | 37.97278 | -93.81194 | 797 | 385 |
| Rose Hill | city | Missouri | United States | 38.63278 | -94.06889 | 856 | 1060 |
| Roseberry | city | Missouri | United States | 40.43778 | -95.04056 | 1033 | 440 |
| Rosebud | city | Missouri | United States | 38.38722 | -91.40083 | 836 | 1065 |
| Roseland | city | Missouri | United States | 38.39333 | -93.54222 | 793 | 694 |
| Roselle | city | Missouri | United States | 37.59944 | -90.52583 | 800 | 1883 |
| Rosendale | city | Missouri | United States | 40.04444 | -94.82056 | 925 | 981 |
| Roseville | city | Missouri | United States | 37.26444 | -93.265 | 1243 | 42188 |
| Rosewood | city | Missouri | United States | 40.425 | -92.92278 | 892 | 757 |
| Ross Bridge | city | Missouri | United States | 37.66583 | -92.04833 | 997 | 2458 |
| Ross historical | city | Missouri | United States | 36.81611 | -91.28667 | 593 | 409 |
| Rossville | city | Missouri | United States | 36.73306 | -90.24639 | 314 | 1227 |
| Rothville | city | Missouri | United States | 39.65333 | -93.06389 | 688 | 371 |
| Roubidoux | city | Missouri | United States | 37.4225 | -92.14778 | 1158 | 1064 |
| Round Bottom Ford historical | city | Missouri | United States | 38.03 | -93.33778 | 698 | 744 |
| Round Grove | city | Missouri | United States | 37.26667 | -93.905 | 1256 | 817 |
| Round Spring | city | Missouri | United States | 37.28056 | -91.41111 | 698 | 238 |
| Rousertown | city | Missouri | United States | 37.70306 | -94.23472 | 839 | 609 |
| Rover | city | Missouri | United States | 36.72167 | -91.62083 | 958 | 1204 |
| Rowena | city | Missouri | United States | 39.32583 | -92.0575 | 787 | 551 |
| Rowland | city | Missouri | United States | 37.59861 | -93.81583 | 997 | 1213 |
| Roxie historical | city | Missouri | United States | 36.72917 | -90.50611 | 347 | 1788 |
| Roy | city | Missouri | United States | 36.89028 | -92.80361 | 1197 | 649 |
| Royal | city | Missouri | United States | 38.12806 | -91.57972 | 931 | 1595 |
| Royal Oak | city | Missouri | United States | 36.73389 | -91.47222 | 898 | 430 |
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