| Date | Type | Code | Name |
|---|---|---|---|
| 1983-02-21 | Deletion | 66161 | Ria-Sirach-Urbanya |
| 1983-02-21 | Restoration | 66161 | Ria-Sirach-Urbanya → Ria-Sirach |
| 1983-02-21 | Restoration | 66161 → 66219 | Ria-Sirach-Urbanya → Urbanya |
| 1973-03-01 | Deletion | 66161 | Ria |
| 1973-03-01 | Simple merger | 66161 | Ria → Ria-Sirach-Urbanya |
| 1973-03-01 | Simple merger | 66219 → 66161 | Urbanya → Ria-Sirach-Urbanya |
| 1943-01-01 | Creation | 66161 | Ria |