The list is the FIPS codes of Mississippi counties. All the FIPS codes are starting with 28.
| County | FIPS Code |
| Adams | 28001 |
| Alcorn | 28003 |
| Amite | 28005 |
| Attala | 28007 |
| Benton | 28009 |
| Bolivar | 28011 |
| Calhoun | 28013 |
| Carroll | 28015 |
| Chickasaw | 28017 |
| Choctaw | 28019 |
| Claiborne | 28021 |
| Clarke | 28023 |
| Clay | 28025 |
| Coahoma | 28027 |
| Copiah | 28029 |
| Covington | 28031 |
| De Soto | 28033 |
| Forrest | 28035 |
| Franklin | 28037 |
| George | 28039 |
| Greene | 28041 |
| Grenada | 28043 |
| Hancock | 28045 |
| Harrison | 28047 |
| Hinds | 28049 |
| Holmes | 28051 |
| Humphreys | 28053 |
| Issaquena | 28055 |
| Itawamba | 28057 |
| Jackson | 28059 |
| Jasper | 28061 |
| Jefferson | 28063 |
| Jefferson Davis | 28065 |
| Jones | 28067 |
| Kemper | 28069 |
| Lafayette | 28071 |
| Lamar | 28073 |
| Lauderdale | 28075 |
| Lawrence | 28077 |
| Leake | 28079 |
| Lee | 28081 |
| Leflore | 28083 |
| Lincoln | 28085 |
| Lowndes | 28087 |
| Madison | 28089 |
| Marion | 28091 |
| Marshall | 28093 |
| Monroe | 28095 |
| Montgomery | 28097 |
| Neshoba | 28099 |
| Newton | 28101 |
| Noxubee | 28103 |
| Oktibbeha | 28105 |
| Panola | 28107 |
| Pearl River | 28109 |
| Perry | 28111 |
| Pike | 28113 |
| Pontotoc | 28115 |
| Prentiss | 28117 |
| Quitman | 28119 |
| Rankin | 28121 |
| Scott | 28123 |
| Sharkey | 28125 |
| Simpson | 28127 |
| Smith | 28129 |
| Stone | 28131 |
| Sunflower | 28133 |
| Tallahatchie | 28135 |
| Tate | 28137 |
| Tippah | 28139 |
| Tishomingo | 28141 |
| Tunica | 28143 |
| Union | 28145 |
| Walthall | 28147 |
| Warren | 28149 |
| Washington | 28151 |
| Wayne | 28153 |
| Webster | 28155 |
| Wilkinson | 28157 |
| Winston | 28159 |
| Yalobusha | 28161 |
| Yazoo | 28163 |
All codes are cited from United States Department of Agriculture [28].