Onikan is a location within the city of Lagos, Lagos State, Nigeria. It contains several streets that make use of the same postal or zip code.
Here are the streets in Onikan and their postal code:
| Location | Postal Code |
| Moloney Street St. | 101231 |
| Araromi Street St. | 101231 |
| Berkley Street St. | 101231 |
| Macharthy Street St. | 101231 |
| Berkley Towers St. | 101231 |
| King George V. Str. St. | 101231 |
| Boyles Street St. | 101231 |
| Ajasa Street St. | 101231 |
| Military Street St. | 101231 |
| Defence Hqtrs. St. | 101231 |
| Tafawa Balewa Sq. East St. | 101231 |
| Tafawa Balewa Sq.West St. | 101231 |
| Tafawa Balewa Sq.Terrance. St. | 101231 |
| Tafawa Balewa Sq. St. | 101231 |
| (Club Arcade) St. | 101231 |
| Lawson Street St. | 101231 |
| Stranchan Street St. | 101231 |
| Macarthy Street St. | 101231 |
| Stranch Lane St. | 101231 |
|
| ECOWAS Hqtrs. St. | 101231 |
| Awoeowo Road 1 8 St. | 101231 |
| Muson Centre St. | 101231 |
| Force Road St. | 101231 |
| Marina Street 1 14 St. | 101231 |
| Island Club St. | 101231 |
| Nitel Hqtrs. St. | 101231 |
| City Hall St. | 101231 |
| Campbell Street St. | 101231 |
| Towry Street St. | 101231 |
| Hospital Road St. | 101231 |
| Oil Mill St St. | 101231 |
| Catholic Mission Str. St. | 101231 |
| Bamgbose St St. | 101231 |
| Luther Street St. | 101231 |
| Malomo Court St. | 101231 |
| Shonibare St St. | 101231 |
| Campos Square St. | 101231 |
| Upper Campos St. | 101231 |