| Postal Code | 04-888 |
| Postal Code Name | Warsaw |
| Voivodeship | Masovian Voivodeship |
| County | Warsaw |
| Timezone | Central European Summer Time (CEST) |
| Adjacent Postal Codes | 04-862 04-863 04-875 04-877 04-878 04-879 04-880 04-882 04-883 04-884 04-889 04-890 04-895 04-897 04-898 04-952 04-953 04-954 04-955 04-956 04-959 04-960 04-961 04-962 |