| Postal Code | 11-041 |
| Postal Code Name | Olsztyn |
| Voivodeship | Warmian-Masurian Voivodeship |
| County | Olsztyn County |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 10-153 10-158 10-160 10-161 10-164 10-173 10-175 10-180 10-183 10-187 10-188 10-189 10-191 10-192 10-229 10-802 10-852 10-853 11-001 11-036 11-042 |