| Missouri County | Abrev | QSOs |
| St. Louis County | SLC | 2064 |
| Jefferson | JEF | 1510 |
| Stone | STN | 1509 |
| Jackson | JAC | 1361 |
| Washington | WAS | 1035 |
| Franklin | FRA | 1013 |
| St. Charles | STC | 832 |
| Buchanan | BUC | 707 |
| Gasconade | GAS | 678 |
| Howell | HWL | 651 |
| Iron | IRN | 593 |
| Warren | WAR | 561 |
| Cole | COL | 542 |
| St. Louis City | STL | 451 |
| Boone | BOO | 368 |
| Jasper | JAS | 355 |
| Putnam | PUT | 321 |
| Adair | ADR | 320 |
| Sullivan | SUL | 320 |
| Phelps | PHE | 304 |
| Taney | TAN | 293 |
| Crawford | CRA | 292 |
| Cass | CAS | 285 |
| Ozark | OZA | 251 |
| Newton | NWT | 229 |
| Montgomery | MGM | 182 |
| Cape Girardeau | CPG | 180 |
| New Madrid | NMD | 144 |
| Barry | BAR | 143 |
| Nodaway | NOD | 142 |
| Reynolds | REY | 139 |
| Wayne | WAY | 134 |
| Butler | BTR | 127 |
| DeKalb | DEK | 121 |
| Daviess | DVS | 120 |
| Holt | HLT | 120 |
| Perry | PER | 117 |
| Worth | WOR | 111 |
| Bates | BAT | 109 |
| Harrison | HAR | 107 |
| Lincoln | LCN | 107 |
| Madison | MAD | 105 |
| Greene | GRN | 102 |
| Scott | SCO | 102 |
| Atchison | ATC | 96 |
| Carroll | CRL | 92 |
| Stoddard | STD | 92 |
| Ray | RAY | 91 |
| Dunklin | DUN | 91 |
| Pettis | PET | 90 |
| Christian | CHR | 89 |
| Platte | PLA | 88 |
| Gentry | GEN | 87 |
| Grundy | GRU | 86 |
| Vernon | VRN | 86 |
| Johnson | JON | 85 |
| McDonald | MCD | 84 |
| St. Francois | STF | 84 |
| Saline | SAL | 81 |
| Maries | MRE | 81 |
| Osage | OSA | 75 |
| Texas | TEX | 75 |
| Oregon | ORE | 75 |
| Barton | BTN | 74 |
| Cedar | CED | 71 |
| Clay | CLA | 71 |
| Mississippi | MIS | 71 |
| Livingston | LIV | 71 |
| St. Clair | SCL | 66 |
| Clinton | CLN | 65 |
| Lawrence | LAW | 63 |
| Wright | WRT | 62 |
| Andrew | AND | 62 |
| Dallas | DAL | 61 |
| Caldwell | CWL | 59 |
| Audrain | AUD | 57 |
| Lafayette | LAF | 56 |
| Pemscott | PEM | 55 |
| St. Genevieve | STG | 50 |
| Dade | DAD | 50 |
| Bollinger | BOL | 48 |
| Douglas | DGL | 46 |
| Benton | BEN | 45 |
| Ripley | RIP | 45 |
| Henry | HEN | 44 |
| Howard | HOW | 42 |
| Scotland | SCT | 42 |
| Chariton | CHN | 40 |
| Moniteau | MNT | 36 |
| Randolph | RAN | 35 |
| Linn | LIN | 35 |
| Callaway | CAL | 34 |
| Cooper | COP | 32 |
| Morgan | MOR | 31 |
| Mercer | MER | 29 |
| Polk | POL | 29 |
| Hickory | HIC | 28 |
| Webster | WEB | 27 |
| Knox | KNX | 26 |
| Schuyler | SCH | 25 |
| Laclede | LAC | 21 |
| Camden | CAM | 19 |
| Pike | PIK | 19 |
| Ralls | RAL | 19 |
| Dent | DEN | 17 |
| Monroe | MON | 7 |
| Clark | CLK | 3 |
| Pulaski | PUL | 2 |
| Marion | MAR | 1 |
| Shelby | SHL | 1 |
| Macon | MAC | 0 |
| Miller | MIL | 0 |
| Carter | CAR | 0 |
| Lewis | LEW | 0 |
| Shannon | SHA | 0 |
| Total | QSOs | 22777 |
