Missouri County FIPS Codes
| Adair | 001 | Clay | 047 | Iron | 093 | Montgomery | 139 | Schuyler | 197 |
| Andrew | 003 | Clinton | 049 | Jackson | 095 | Morgan | 141 | Scotland | 199 |
| Atchison | 005 | Cole | 051 | Jasper | 097 | New Madrid | 143 | Scott | 201 |
| Audrain | 007 | Cooper | 053 | Jefferson | 099 | Newton | 145 | Shannon | 203 |
| Barry | 009 | Crawford | 055 | Johnson | 101 | Nodaway | 147 | Shelby | 205 |
| Barton | 011 | Dade | 057 | Knox | 103 | Oregon | 149 | St. Charles | 183 |
| Bates | 013 | Dallas | 059 | Laclede | 105 | Osage | 151 | St. Clair | 185 |
| Benton | 015 | Daviess | 061 | Lafayette | 107 | Ozark | 153 | Ste Genevieve | 186 |
| Bollinger | 017 | Dekalb | 063 | Lawrence | 109 | Pemiscot | 155 | St.Francois | 187 |
| Boone | 019 | Dent | 065 | Lewis | 111 | Perry | 157 | St. Louis City | 510 |
| Buchanan | 021 | Douglas | 067 | Lincoln | 113 | Pettis | 159 | St. Louis Cnty | 189 |
| Butler | 023 | Dunklin | 069 | Linn | 115 | Phelps | 161 | Stoddard | 207 |
| Caldwell | 025 | Franklin | 071 | Livingston | 117 | Pike | 163 | Stone | 209 |
| Callaway | 027 | Gasconade | 073 | Macon | 121 | Platte | 165 | Sullivan | 211 |
| Camden | 029 | Gentry | 075 | Madison | 123 | Polk | 167 | Taney | 213 |
| Cape Girardeau | 031 | Greene | 077 | Maries | 125 | Pulaski | 169 | Texas | 215 |
| Carroll | 033 | Grundy | 079 | Marion | 127 | Putnam | 171 | Vernon | 217 |
| Carter | 035 | Harrison | 081 | McDonald | 119 | Ralls | 173 | Warren | 219 |
| Cass | 037 | Henry | 083 | Mercer | 129 | Randolph | 175 | Washington | 221 |
| Cedar | 039 | Hickory | 085 | Miller | 131 | Ray | 177 | Wayne | 223 |
| Chariton | 041 | Holt | 087 | Mississippi | 133 | Reynolds | 179 | Webster | 225 |
| Christian | 043 | Howard | 089 | Moniteau | 135 | Ripley | 181 | Worth | 227 |
| Clark | 045 | Howell | 091 | Monroe | 137 | Saline | 195 | Wright | 229 |