RIAU memiliki 214 kode pos unik
| # | Kode Pos | Jumlah Desa |
|---|---|---|
| 181 | 29318 |
1 |
| 182 | 29319 |
8 |
| 183 | 29351 |
17 |
| 184 | 29352 |
11 |
| 185 | 29353 |
17 |
| 186 | 29354 |
12 |
| 187 | 29356 |
10 |
| 188 | 29357 |
17 |
| 189 | 29358 |
9 |
| 190 | 29359 |
12 |
| 191 | 29371 |
11 |
| 192 | 29372 |
19 |
| 193 | 29373 |
20 |
| 194 | 29374 |
10 |
| 195 | 29375 |
9 |
| 196 | 29511 |
1 |
| 197 | 29512 |
1 |
| 198 | 29515 |
1 |
| 199 | 29516 |
1 |
| 200 | 29518 |
1 |