| Postal Code | 601001 |
| Postal Code Name | Borzești |
| Province | Bacău County |
| Municipality | Onești |
| Timezone | Eastern European Summer Time (EEST) |
| Adjacent Postal Codes | 601039 601042 601055 601110 601111 601115 601116 601122 601123 601124 601125 601126 601127 601145 601148 601151 601152 601156 601157 601158 601159 607098 607220 607223 607605 607611 607612 607613 |