RIAU memiliki 214 kode pos unik
| # | Kode Pos | Jumlah Desa |
|---|---|---|
| 161 | 29256 |
12 |
| 162 | 29257 |
11 |
| 163 | 29258 |
12 |
| 164 | 29261 |
4 |
| 165 | 29262 |
5 |
| 166 | 29271 |
4 |
| 167 | 29272 |
10 |
| 168 | 29273 |
3 |
| 169 | 29274 |
10 |
| 170 | 29275 |
5 |
| 171 | 29276 |
10 |
| 172 | 29281 |
2 |
| 173 | 29282 |
8 |
| 174 | 29283 |
4 |
| 175 | 29311 |
1 |
| 176 | 29312 |
1 |
| 177 | 29313 |
1 |
| 178 | 29314 |
1 |
| 179 | 29316 |
1 |
| 180 | 29317 |
1 |