Zone A
- Westlands: 00200
- CBD: 00100
- Pangani: 00200
- Eastleigh: 00610
- Community: 00200
- Milimani: 00200
- Ngara: 00600
- City Stadium: 00200
- Parklands: 00623
- Muthaiga: 00619
- Kileleshwa: 00620
- Lavington: 00603
- Industrial Area: 00200
- South B: 00508
- South C: 00507
Zone C
- Magadi Road: 00504
- Rongai: 00505
- Kinoo: 00628
- Muthiga: 00629
- Ruaka: 00630
- Kahawa Sukari: 00631
- Wendani: 00632
- Thindigua: 00633
- Kiambu: 00634
Zone B
- Donholm: 00617
- Buru Buru: 00515
- Umoja: 00517
- Fedha: 00514
- Luck Summer: 00513
- Jogoo Road: 00512
- Sameer: 00511
- Cabanas: 00510
- Imara Daima: 00509
- Kasarani: 00624
- Zimmerman: 00522
- Mirema: 00523
- Dandora: 00516
- Komarock: 00518
- Kangemi: 00625
- Uthiru: 00626
- Galleria: 00622
- Kiambu Road: 00621
- Ridgeways: 00602
- Racecourse: 00605
- Kitsuru: 00606
- Kawangware: 00627
Zone D
- Utawala: 00635
- Ruiru: 00636
- Kikuyu: 00637
- K West: 00638