| Code | Sub-Division Name |
| 0000 | Rural (No Addition) |
| 0005 | Boise City Original |
| 0010 | Bader Addition |
| 0015 | Bagley sub of Bader |
| 0020 | Barnes sub of Bader |
| 0025 | Etling sub of Bader |
| 0030 | French sub of Bader |
| 0035 | Hammond sub of Bader |
| 0040 | Hood sub of Bader |
| 0045 | Johnson sub of Bader |
| 0050 | Ogston sub A of Bader |
| 0055 | Ogston sub B of Bader |
| 0060 | Ogston sub C of Bader |
| 0065 | Ogston sub D of Bader |
| 0070 | Pugh sub of Bader |
| 0075 | Smith sub of Bader |
| 0080 | Hixson Addition |
| 0085 | Industrial Addition |
| 0090 | McCue sub of Smith Addition |
| 0095 | North Highland Addition |
| 0100 | Roseland Heights Addition |
| 0105 | Santa Fe Place Addition |
| 0110 | Scotland Heights Addition |
| 0115 | Sellars Addition |
| 0120 | Shannon Addition |
| 0125 | Smith Addition |
| 0200 | Keyes Original |
| 0205 | First Addition |
| 0210 | Second Addition |
| 0215 | Burrow Addition |
| 0220 | Cimarron Heights Addition |
| 0225 | Hutchison Addition |
| 0230 | South Keyes Addition |
| 0300 | Balenseifen Addition to Keyes |
| 0305 | Felt Original |
| 0310 | Kenton Original |
| 0315 | Hubbard Addition to Kenton |
| 0320 | Hadden Myers Addition to Kenton |
| 0325 | Ramsey Original |
| 0330 | East Ramsey Addition |
| 0335 | Sturgis |
