Territorial unit code format differs in each territorial unit layout.
In view by NTS classification it has structure:
| 0 | 00 | 00 | 00 | 000 | - total 10 characters |
| 1. | 2. | 3. | 4. | 5. |
| where number denote: |
| 1. Region symbol (0, 1, ..., 6) | - one character |
| 2. Voivodeship symbol (00, 02, ..., 32) | - two characters |
| 3. Subregion symbol (00, 01, ..., 66/72) | - two characters |
| 4. Powiat symbol (00, 01, ..., 59 - powiats; 60, ..., 99 - cities with powiat status) | - two characters |
| 5. Symbol of gmina/part of the gmina (000......, where the last character is unit type symbol) | - three characters |
and in view by TERYT register:
| 00 | 00 | 000 | - total 7 characters |
| 1. | 2. | 3. |
| where number denote: |
| 1. Voivodeship symbol (00, 02, ..., 32) | - two characters |
| 2. Powiat symbol (00, 01, ..., 59 - powiats; 60, ..., 99 - cities with powiat status) | - two characters |
| 3. Symbol of gmina/part of the gmina (000......, where the last character is unit type symbol) | - three characters |