#1 Mombasa County Postal Codes
- 8 0100 – Mombasa
- 8 0101 – Bamburi
- 8 0102 – Changamwe
- 8 0103 – Coast Gen. Hospital
- 8 0104 – Docks
- 8 0106 – Mkomani
- 8 0107 – Kilindini
- 8 0110 – Likoni
- 8 0111 – Mtongwe
- 8 0112 – Makupa
- 8 0115 – Moi Airport
- 8 0117 – Mtopanga
- 8 0118 – Nyali
- 8 0122 – Kengeleni
- 8 0123 – Kanamai
#2 Kwale County
- 8 0120 – Samburu
- 8 0400 – Ukunda
- 8 0401 – Diani Beach
- 8 0402 – Lunga Lunga
- 8 0403 – Kwale
- 8 0404 – Msambweni
- 8 0405 – Kinango
- 8 0406 – Matuga
- 8 0407 – Shimba Hills
- 8 0409 – Shimoni
- 8 0410 – Kikoneni
#3 Kilifi County Postal Codes
- 8 0105 – Kaloleni
- 8 0108 – Kilifi
- 8 0109 – Mtwapa
- 8 0113 – Mariakani
- 8 0114 – Mazeras
- 8 0119 – Vipingo
- 8 0200 – Malindi
- 8 0202 – Watamu
- 8 0205 – Ganze
- 8 0206 – Gongoni
- 8 0207 – Madina
- 8 0208 – Gede
- 8 0209 – Kakoneni
- 8 0210 – Bamba
- 8 0211 – Vitengeni
- 8 0212 – Ngomeni
- 8 0213 – Mambrui
#4 Tana River County Postal Codes
- 8 0201 – Garsen
- 8 0203 – Tarasaa
#5 Lamu County Postal Codes
- 8 0500 – Lamu
- 8 0501 – Faza
- 8 0502 – Mokowe
- 8 0503 – Mpeketoni
- 8 0504 – Witu
#6 Taita Taveta County Postal Codes
- 4 0509 – Manga
- 5 0219 – Luandanyi
- 8 0300 – Voi
- 8 0301 – Manyani
- 8 0302 – Taveta
- 8 0303 – Werugha
- 8 0304 – Wundanyi
- 8 0305 – Mwatate
- 8 0306 – Mgange
- 8 0307 – Kasigau
- 8 0308 – Sagalla
- 8 0309 – Tausa
- 8 0311 – Ng’Ambwa
- 8 0313 – Mgambonyi
- 8 0314 – Chumvini
- 8 0315 – Maktau
- 8 0317 – Maungu
#7 Garisa County Postal Codes
- 7 0100 – Garissa
- 7 0101 – Hola
- 7 0102 – Modo Gashe
- 7 0103 – Dadaab
- 7 0104 – Bura Tana
- 7 0105 – Masalani
#8 Wajir County Postal Codes
- 7 0200 – Wajir
- 7 0201 – Habaswein
#9 Mandera County Postal Codes
- 7 0300 – Mandera
- 7 0301 – Elwak
#10 Marsabit County Postal Codes
- 6 0500 – Marsabit
- 6 0501 – Loiyangalani
- 6 0502 – Laisamis
- 6 0700 – Moyale
- 6 0701 – Sololo
#11 Isiolo County Postal Codes
- 6 0300 – Isiolo
- 6 0301 – Garba Tulla
- 6 0302 – Archers Post
- 6 0303 – Merti
#12 Meru County Zip Code
- 0 0903 – Githiga
- 0 1017 – Kiriua
- 6 0201 – Kibirichia
- 6 0205 – Githongo
#13 Tharaka Nithi County Zip Code
- 1 0115 – Gathunga
- 6 0213 – Tunyai
- 6 0214 – Nkondi
- 6 0215 – Marimanti
- 6 0400 – Chuka
- 6 0401 – Chogoria
- 6 0402 – Igoji
- 6 0403 – Magumoni
- 6 0404 – Gatunga
- 6 0405 – Ikuu
- 6 0406 – Kathwana
- 6 0407 – Magutuni
- 6 0408 – Marima
- 6 0409 – Chiakariga
- 6 0410 – Chiakanyinga
- 6 0411 – Huduma Chuka
- 6 0411 – Kaanwa
#14 Embu County Postal Codes
- 0 1031 – Kindaruma
- 6 0100 – Embu
- 6 0101 – Manyatta
- 6 0102 – Ishiara
- 6 0103 – Runyenjes
- 6 0104 – Siakago
- 6 0105 – Karaba
- 6 0106 – Kanyuambora
- 6 0107 – Karingari
- 6 0108 – Kevote
- 6 0109 – Kiambere
- 6 0112 – Kibugu
- 6 0113 – Kiritiri
- 6 0114 – Kithimu
- 6 0115 – Nganduri
- 6 0117 – Karurumo
- 6 0118 – Kanja
- 6 0119 – Gachoka
- 6 0121 – Wachoro
- 6 0122 – Kianjokoma
- 6 0125 – Kubu Kubu
- 9 0141 – Masinga
- 9 0209 – Kyeni
#15 Kitui County Postal Codes
- 9 0200 – Kitui
- 9 0202 – Ndooa
- 9 0203 – Tulia
- 9 0204 – Kisasi
- 9 0205 – Kabati
- 9 0206 – Endau
- 9 0210 – Matinyani
- 9 0211 – Mutha
- 9 0212 – Voo
- 9 0213 – Zombe
- 9 0214 – Mbitini
- 9 0215 – Kwavonza
- 9 0217 – Katutu
- 9 0218 – Kiusyani
- 9 0219 – Chuluni
- 9 0403 – Kamuwongo
- 9 0404 – Katse
- 9 0408 – Nuu
#16 Machakos County Postal Codes
- 0 0204 – Athi River
- 0 0519 – Mlolongo
- 9 0100 – Machakos
- 9 0101 – Masii
- 9 0104 – Mitaboni
- 9 0105 – Kathiani
- 9 0106 – Katangi
- 9 0107 – Kaviani
- 9 0109 – Lita
- 9 0111 – Kivunga
- 9 0114 – Muumandu
- 9 0117 – Mutituni
- 9 0118 – Ndalani
- 9 0119 – Matuu
- 9 0120 – Iiani
- 9 0139 – Ekalakala
- 9 0145 – Daystar
- 9 0147 – Chumvi
- 9 0150 – Kaewa
#17 Makueni County Postal Codes
- 9 0108 – Kola
- 9 0112 – Miu
- 9 0122 – Kalamba
- 9 0123 – Kasikeu
- 9 0124 – Kithimani
- 9 0125 – Kikima
- 9 0126 – Kalawa
- 9 0127 – Mbumbuni
- 9 0133 – Tawa
- 9 0135 – Ikalaasa
- 9 0143 – Nziu
- 9 0300 – Makueni
- 9 0301 – Okia
- 9 0302 – Kathonzweni
- 9 0303 – Kitise
- 9 0304 – Mavindini
- 9 0305 – Kilala
#18 Nyandarua County Postal Codes
- 2 0301 – Miharati
- 2 0302 – Oljoro-Orok
- 2 0303 – Ol-Kalou
- 2 0304 – Kaheho
- 2 0305 – Wanjohi
- 2 0306 – Ndaragwa
- 2 0307 – Igwamiti
- 2 0308 – Ngano
- 2 0309 – Kanyaagia
- 2 0310 – Leshau
- 2 0311 – Passenga
- 2 0313 – Rurii
- 2 0315 – Mukeu
- 2 0316 – Murungaru
- 2 0317 – Ndunyu Njeru
- 2 0318 – North-Kinangop
- 2 0319 – South-Kinangop
#19 Nyeri County Postal Codes
- 1 0100 – Nyeri
- 1 0101 – Karatina
- 1 0102 – Kiganjo
- 1 0103 – Mukurweini
- 1 0104 – Mweiga
- 1 0106 – Othaya
- 1 0107 – Endarasha
- 1 0108 – Giakanja
- 1 0109 – Gakere Road
- 1 0111 – Gakindu
- 1 0114 – Gatitu
- 1 0122 – Kiamariga
- 1 0123 – Kiandu
- 1 0125 – Kimahuri
- 1 0129 – Mugunda
- 1 0130 – Munyu
- 1 0133 – Ruringu
- 1 0136 – Tumu-Tumu
- 1 0140 – Kimathi Way
- 1 0141 – Kamakwa Rd
- 1 0142 – Kamakwa Rd Huduma
- 1 0143 – Dedan Kimathi
- 1 0144 – Karatina University
- 1 0305 – Gatugura
#20 Kirinyaga County Postal Codes
- 1 0230 – Sagana
- 1 0300 – Kerugoya
- 1 0301 – Kirinyaga
- 1 0302 – Baricho
- 1 0303 – Wanguru
- 1 0304 – Kutus
- 1 0306 – Kagio
- 1 0307 – Kagumo
- 1 0309 – Kiamutugu
- 1 0310 – Kimbimbi
- 1 0311 – Huduma Kerugoya
- 1 0312 – Kimunye
- 6 0120 – Mururi
#21 Muranga County Postal Codes
- 0 1014 – Kakuzi
- 0 1020 – Kenol
- 0 1023 – Mukerenju
- 0 1024 – Muruka
- 0 1032 – Githumu
- 0 1033 – Kagundu-Ini
- 0 1034 – Kandara
- 1 0200 – Muranga
- 1 0201 – Kahuro
- 1 0202 – Kangema
- 1 0203 – Kigumo
- 1 0204 – Kiriaini
- 1 0205 – Maragua
- 1 0206 – Kahuhia
- 1 0207 – Kihoya
- 1 0208 – Saba-Saba
- 1 0209 – Gitugi
- 1 0210 – Gacharage-Ini
- 1 0212 – Gatara
- 1 0213 – Gikoe
- 1 0214 – Kahuti
- 1 0215 – Kairo
- 1 0217 – Kamahuha
- 1 0218 – Kangari
- 1 0220 – Kanyenyaini
- 1 0226 – Kambiti
- 1 0227 – Ichichi
- 1 0231 – Kariua
- 1 0232 – Gakungu
- 1 0233 – Mbiri
- 1 0235 – Huduma Muranga
- 1 0244 – Kora
#22 Kiambu County Postal Codes
- 0 0216 – Githunguri
- 0 0217 – Limuru
- 0 0218 – Ngecha
- 0 0219 – Karuri
- 0 0220 – Kijabe
- 0 0221 – Matathia
- 0 0222 – Uplands
- 0 0223 – Kagwe
- 0 0227 – Kinari
- 0 0228 – Muguga
- 0 0229 – Nderu
- 0 0230 – Ndenderu
- 0 0232 – Ruiru
- 0 0239 – Gathiru-Ini
- 0 0240 – Gathugu / Gathungu
- 0 0607 – Kamiti
- 0 0609 – Kenyatta University
- 0 0614 – Wangige
- 0 0626 – Githurai
- 0 0900 – Kiambu
- 0 0901 – Ngewa
- 0 0902 – Kikuyu
- 0 0904 – Ikinu
- 0 0906 – Kerwa
- 0 1000 – Thika
- 0 1001 – Kalimoni
- 0 1002 – Madaraka
- 0 1003 – Gituamba
- 0 1004 – Kanjuku
- 0 1010 – Wamwangi
- 0 1011 – Kanyoni
- 0 1013 – Gatura
- 0 1015 – Ithanga
- 0 1016 – Ndithini
- 0 1018 – Kirwara
- 0 1028 – Gatukuyu
- 0 1030 – Gatundu
#23 Turkana County Postal Codes
- 3 0410 – Kapedo
- 3 0500 – Lodwar
- 3 0501 – Kakuma
- 3 0502 – Kalokol
- 3 0503 – Lokichoggio
- 3 0504 – Lokitaung
- 3 0505 – Huduma Lodwar
- 3 0506 – Lokori
#24 West Pokot County Postal Codes
- 3 0600 – Kapenguria
- 3 0601 – Kacheliba
- 3 0602 – Ortum
- 3 0603 – Wei-Wei
- 3 0604 – Kainuk
- 3 0605 – Chepareria
#25 Samburu County Postal Codes
- 2 0600 – Maralal
- 2 0601 – Baragoi
- 2 0603 – Wamba
- 2 0604 – South Horr
#26 Trans Nzoia County Postal Codes
- 3 0200 – Kitale
- 3 0201 – Endebess
- 3 0203 – Kipsaina
- 3 0206 – Chemiron
- 3 0208 – Kapsara
- 3 0209 – Kiminini
- 3 0210 – Kwanza
- 3 0211 – Saboti
- 3 0212 – Suwerwa
- 3 0213 – Sirende
- 3 0215 – Kesogon
- 4 0619 – Asembo Bay
#27 Uasin Gishu County Postal Codes
- 3 0100 – Eldoret
- 3 0101 – Ainabkoi
- 3 0102 – Burnt Forest
- 3 0103 – Kipkabus
- 3 0104 – Moiben
- 3 0105 – Soy
- 3 0106 – Turbo
- 3 0107 – Moi University
- 3 0108 – Timboroa
- 3 0109 – Huruma
- 3 0110 – Kihuga Square
- 3 0111 – Kapngetuny
- 3 0112 – Langas
- 3 0113 – Kamwosor
- 3 0114 – Kaptagat
- 3 0116 – Plateau
- 3 0117 – Kiplegetet
- 3 0118 – Kiptabach
- 3 0120 – Kimoning
- 3 0121 – Chepterwai
- 3 0123 – Ndalat
- 3 0124 – Eldoret Airport
- 3 0125 – Chebororwa
- 3 0131 – Nyaru
- 3 0133 – Chepkoilel
- 3 0134 – Zion Mall
- 3 0202 – Moi’S Bridge
- 3 0205 – Matunda
- 3 0214 – Ziwa
- 3 0217 – Sikinwa
- 3 0412 – Barwesa
- 3 0711 – Kapteren
- 30135 – Waunifor
#28 Elgeyo/Marakwet County Postal Codes
- 30705 – Kapsumai
- 30705 – Kipsaiya
- 30705 – Kobuswa
- 30705 – Sangurur
- 30705 – Sisiya
#29 Nandi County Postal Codes
- 3 0132 – Kesses
- 3 0300 – Kapsabet
- 3 0301 – Nandi Hills
- 3 0302 – Lessos
- 3 0303 – Kabiyet
- 3 0304 – Kapcheno
- 3 0305 – Kobujoi
- 3 0306 – Baraton
- 3 0307 – Mosoriot
- 3 0309 – Chepsonoi
- 3 0311 – Kapchorwa
- 3 0313 – Kapsumbeiwa
- 3 0314 – Koilot
- 3 0315 – Kilibwoni
- 4 0143 – Chemase
#30 Baringo County Postal Codes
- 2 0103 – Eldama Ravine
- 2 0105 – Mogotio
- 2 0144 – Kisanana
- 2 0145 – Maji Mazuri
- 2 0153 – Torongo
- 3 0119 – Kapkenda
- 3 0400 – Kabarnet
- 3 0401 – Kabartonjo
- 3 0402 – Kiptagich
- 3 0403 – Marigat
- 3 0404 – Nginyang
- 3 0405 – Tenges
- 3 0406 – Kampi-Ya-Samaki
- 3 0407 – Seretunin
- 3 0408 – Bartolimo
- 3 0411 – Kipsaraman
- 3 0411 – Kisarama
- 3 0413 – Huduma Kabarnet
#31 Laikipia County Postal Codes
- 1 0105 – Naro Moru
- 1 0400 – Nanyuki
- 1 0401 – Doldol
- 1 0406 – Timau
- 1 0407 – Huduma Nanyuki
- 2 0300 – Nyahururu
- 2 0312 – Mochogoini
- 2 0314 – Mairo Inya
- 2 0320 – Kinamba
- 2 0321 – Rumuruti
- 2 0322 – Marmanet
- 2 0323 – Muhotetu
- 2 0324 – Ngelesha
- 2 0326 – Sipili
- 2 0328 – Karandi
- 2 0329 – Wiyumiririe
- 2 0330 – Laikipia Campus
#32 Nakuru County Postal Codes
- 0 0242 – Ewaso Kedong
- 2 0100 – Nakuru
- 2 0101 – Bondeni
- 2 0102 – Elburgon
- 2 0104 – Menengai
- 2 0106 – Molo
- 2 0107 – Njoro
- 2 0108 – Rongai
- 2 0109 – Subukia
- 2 0110 – Timber Mills
- 2 0111 – Mau Narok
- 2 0112 – Lanet
- 2 0113 – Bahati
- 2 0114 – Kabazi
- 2 0115 – Egerton
- 2 0116 – Gilgil
- 2 0117 – Naivasha
- 2 0118 – Dundori
- 2 0119 – Elementaita
- 2 0120 – Kabatini
- 2 0121 – Kampi Ya Moto
- 2 0122 – Mau Summit
- 2 0123 – Milton Siding
- 2 0124 – Mirangine
- 2 0126 – Ngorika
- 2 0127 – Ronda
- 2 0128 – Solai
- 2 0129 – Turi
- 2 0130 – Kirobon
- 2 0131 – Keringet
- 2 0131 – Kirengeti
- 2 0132 – Kamwaura
- 2 0133 – Kiptangwanyi
- 2 0134 – Kamara
- 2 0135 – Kirisoi
- 2 0136 – Koige
- 2 0142 – Naishi
- 2 0146 – Longonot
- 2 0147 – Maai Mahiu
- 2 0148 – Maiella
- 2 0149 – Makumbi
- 2 0150 – Shabaab
- 2 0152 – Olenguruone
- 2 0154 – Kuresoi
- 2 0157 – Kabarak
- 4 0142 – Victoria
- 5 0237 – Nzoia
- 5 0238 – Tabani
#33 Narok County Postal Codes
- 2 0420 – Sogoo
- 2 0500 – Narok
- 2 0501 – Keekorok
- 2 0502 – Olkurto
- 2 0503 – Ololulunga
- 2 0504 – Nairage Enkare
- 4 0700 – Kilgoris
- 4 0701 – Lolgorian
- 4 0702 – Njipiship
- 4 0703 – Enosaen
- 9 0116 – Kivaani
- 9 0148 – Kiunduani
#34 Kajiado County Postal Codes
- 0 0205 – Magadi
- 0 0206 – Kiserian
- 0 0207 – Namanga
- 0 0208 – Ngong Hills
- 0 0209 – Loitokitok
- 0 0210 – Thigio
- 0 0213 – Oltepesi
- 0 0214 – Ilasit
- 0 0215 – Kimana
- 0 0241 – Kitengela
- 0 0511 – Ongata Rongai
- 0 1100 – Kajiado
- 0 1101 – Bissel
- 0 1103 – Mashuru
- 0 1105 – Kajiado West
#35 Kericho County Postal Codes
- 2 0200 – Kericho
- 2 0201 – Kabianga
- 2 0202 – Kipkelion
- 2 0203 – Londiani
- 2 0204 – Roret
- 2 0205 – Sosiot
- 2 0206 – Kapkugerwet
- 2 0207 – Kapsuser
- 2 0208 – Kiptugumo
- 2 0209 – Fort Ternan
- 2 0210 – Litein
- 2 0211 – Kapsoit
- 2 0212 – Sigowet
- 2 0213 – Kiptere
- 2 0214 – Kapkatet
- 2 0215 – Cheborge
- 2 0216 – Chepkemel
- 2 0217 – Chesinendet
- 2 0218 – Kamaget
- 2 0219 – Kapkelek
- 2 0220 – Kedowa
- 2 0222 – Chemamul
- 2 0223 – Sorget
- 2 0225 – Kimulot
- 2 0226 – Huduma Kericho
- 2 0403 – Mogogosiek
#36 Bomet County Postal Codes
- 2 0221 – Kaptebengwet
- 2 0400 – Bomet
- 2 0401 – Chebunyo
- 2 0402 – Longisa
- 2 0404 – Ndanai
- 2 0405 – Sigor
- 2 0406 – Sotik
- 2 0407 – Chemaner
- 2 0409 – Boito
- 2 0410 – Cheptalal
- 2 0411 – Gorgor
- 2 0412 – Kabason
- 2 0413 – Kapcherany
- 2 0414 – Kapkesosio
- 2 0415 – Kapkoros
- 2 0416 – Kiplelji
- 2 0417 – Koiwa
- 2 0418 – Makimeny
- 2 0419 – Merigi
- 2 0421 – Olbutyo
- 2 0422 – Silibwet
- 2 0423 – Siongiroi
- 2 0424 – Amalo (Formerly Oloomirani)
- 2 0424 – Oloomirani
- 2 0426 – Ndaraweta
#37 Kakamega County Postal codes
- 2 0143 – Sabatia
- 4 0621 – Dudi
- 5 0100 – Kakamega
- 5 0101 – Butere
- 5 0102 – Mumias
- 5 0103 – Malava
- 5 0104 – Khayega
- 5 0105 – Bukura
- 5 0106 – Shianda
- 5 0107 – Shinyalu
- 5 0108 – Lugari
- 5 0109 – Bulimbo
- 5 0111 – Ileho
- 5 0112 – Imanga
- 5 0114 – Isulu
- 5 0115 – Kakunga
- 5 0116 – Kambiri
- 5 0117 – Koyonzo
- 5 0118 – Lubao
- 5 0119 – Lunza
- 5 0121 – Lutasa
- 5 0122 – Malaha
- 5 0123 – Malinya
- 5 0124 – Mautuma
- 5 0125 – Musanda
- 5 0126 – Manyulia
- 5 0127 – Nambacha
- 5 0128 – Samitsi
- 5 0132 – Lukume
- 5 0133 – Makunga
- 5 0135 – Khwisero
- 5 0136 – Matete
- 5 0137 – Booker
- 5 0138 – Milimani
- 5 0239 – Nangili
- 5 0240 – Luandeti
- 5 0241 – Kipkarren River
- 5 0242 – Lumakanda
- 5 0316 – Banja
- 5 0319 – Jebrok
- 5 0320 – Lusiola
- 5 0321 – Magada
- 5 0322 – Mahanga
- 5 0324 – Masana
- 5 0325 – Mago
#38 Vihiga County Postal Code
- 5 0300 – Maragoli
- 5 0302 – Chamakanga
- 5 0303 – Eregi
- 5 0304 – Gisambai
- 5 0305 – Kaimosi
- 5 0306 – Khumusalaba
- 5 0307 – Luanda
- 5 0308 – Serem
- 5 0309 – Tiriki
- 5 0310 – Vihiga
- 5 0311 – Wodanga
- 5 0312 – Hamisi
- 5 0313 – Kiritu
- 5 0314 – Emuhaya
- 5 0315 – Kilingili
- 5 0317 – Chavakali
- 5 0318 – Gambogi
- 5 0428 – Muluanda
#39 Bungoma County Zip Codes
- 3 0218 – Tongaren
- 5 0139 – Masinde Muliro University
- 5 0200 – Bungoma
- 5 0201 – Cheptais
- 5 0202 – Chwele
- 5 0203 – Kapsokwony
- 5 0204 – Kimilili
- 5 0205 – Webuye
- 5 0206 – Bokoli
- 5 0207 – Misikhu
- 5 0208 – Sirisia
- 5 0209 – Malakisi
- 5 0210 – Buyofu
- 5 0211 – Naitiri
- 5 0212 – Ndalu
- 5 0213 – Dorofu
- 5 0214 – Kabula
- 5 0216 – Kamukuywa
- 5 0218 – Lugulu
- 5 0220 – Lwakhakha
- 5 0225 – Mukhe
- 5 0226 – Myanga
- 5 0230 – Lukusi
- 5 0233 – Bukembe
- 5 0234 – Kaptama
- 5 0235 – Mabusi
- 5 0236 – Mbakalo
- 5 0245 – Brigadier
- 5 0429 – Elugulu
#40 Busia County Postal Codes
- 5 0244 – Amagoro
- 5 0400 – Busia
- 5 0401 – Sio Port
- 5 0403 – Amukura
- 5 0404 – Bumala
- 5 0405 – Butula
- 5 0406 – Funyula
- 5 0408 – Kamuriai
- 5 0409 – Nambale
- 5 0410 – Port Victoria
- 5 0411 – Bar Ober
- 5 0412 – Angurai
- 5 0413 – Adungosi
- 5 0416 – Buhuyi
- 5 0417 – Bukiri
- 5 0418 – Bumutiru
- 5 0421 – Lukolis
- 5 0422 – Matayos
- 5 0423 – Mubwayo
- 5 0425 – Mungatsi
- 5 0426 – Murumba
#41 Siaya County Postal Codes
- 4 0139 – Akala
- 4 0140 – Aluor
- 4 0142 – Ramula
- 4 0330 – Ramba
- 4 0600 – Siaya
- 4 0601 – Bondo
- 4 0602 – Ndori
- 4 0603 – Ng’Iya
- 4 0604 – Ragengni
- 4 0605 – Sidindi
- 4 0606 – Ugunja
- 4 0607 – Ukwala
- 4 0608 – Uranga
- 4 0609 – Usenge
- 4 0610 – Yala
- 4 0611 – Nyilima
- 4 0612 – Sawagongo
- 4 0613 – Madiany
- 4 0614 – Sega
- 4 0615 – Nango
- 4 0616 – Anyiko
- 4 0620 – Boro
- 4 0623 – Lugingo
- 4 0623 – Luhano
- 4 0625 – Manyuanda
- 4 0626 – Misori
- 4 0628 – Mutumbu
- 4 0630 – Ndigwa
- 4 0631 – Nyadorera
- 4 0632 – Nyamonye
- 4 0633 – Nyawara
- 4 0635 – Sigomre
- 4 0640 – Hawinga
- 4 0645 – Tingwangi
#42 Kisumu County Postal Codes
- 1 0311 – Kibigoti
- 4 0100 – Kisumu
- 4 0101 – Ahero
- 4 0102 – Kombewa
- 4 0103 – Kondele
- 4 0104 – Koru
- 4 0104 – Koru
- 4 0105 – Maseno
- 4 0106 – Miwani
- 4 0107 – Muhoroni
- 4 0108 – Otonglo
- 4 0109 – Sondu
- 4 0110 – Songhor
- 4 0111 – Pap-Onditi
- 4 0112 – Dago
- 4 0113 – Pembe Tatu
- 4 0116 – Chemelil
- 4 0117 – Daraja Mbili
- 4 0118 – Katito
- 4 0119 – Kibigori
- 4 0121 – Kondik
- 4 0122 – Awasi
- 4 0123 – Mega City
- 4 0124 – Nyabondo
- 4 0126 – Nyangande
- 4 0127 – Nyangori
- 4 0129 – Oboch
- 4 0131 – Paw Akuche
- 4 0132 – Rabuor
- 4 0133 – Reru
- 4 0135 – Sigoti
- 4 0137 – Ratta
- 4 0141 – Winam (Kisumu Gpo Extn.)
- 4 0325 – Rakwaro
#43 Homa Bay County Postal Codes
- 4 0222 – Oyugis
- 4 0223 – Kadongo
- 4 0227 – Oriang
- 4 0300 – Homa Bay
- 4 0301 – Kendu Bay
- 4 0302 – Ndhiwa
- 4 0303 – Rangwe
- 4 0304 – Kandiege
- 4 0305 – Mbita
- 4 0306 – Ombonga
- 4 0307 – Magunga
- 4 0308 – Sindo
- 4 0309 – Asumbi
- 4 0310 – Mawego
- 4 0311 – Nyangweso
- 4 0317 – Kojwang
- 4 0319 – Mfangano
- 4 0320 – Mirogi
- 4 0323 – Ogongo
- 4 0326 – Rodi Kopany
- 4 0328 – Awach Tende
- 4 0329 – Pala
- 4 0329 – Rusinga
- 4 0332 – Kosele
- 4 0333 – Nyandhiwa
- 4 0334 – Oyani-Masi
- 4 0335 – Asego
#44 Migori County Postal Codes
- 0 1102 – Isinya
- 4 0224 – Othoro
- 4 0228 – Uriri
- 4 0331 – Dede
- 4 0400 – Suna
- 4 0401 – Karungu
- 4 0402 – Nyatike
- 4 0403 – Rapogi
- 4 0404 – Rongo
- 4 0405 – Sare
- 4 0407 – Giribe
- 4 0409 – Muhuru Bay
- 4 0410 – Mukuro
- 4 0412 – Ranen
- 4 0413 – Kehancha
- 4 0414 – Isibania
- 4 0416 – Kegonga
- 4 0417 – Ntimaru
- 4 0418 – Suba-Kuria
- 4 0418 – Suba-Kuria
- 4 0419 – Migori
- 4 415 – Ikerege
#45 Kisii County Postal Codes
- 4 0200 – Kisii
- 4 0201 – Gesusu
- 4 0202 – Keroka
- 4 0203 – Nyamache
- 4 0204 – Ogembo
- 4 0205 – Nyambunwa
- 4 0206 – Nyamarambe
- 4 0208 – Etago
- 4 0209 – Igare
- 4 0210 – Itumbe
- 4 0211 – Kenyenya
- 4 0212 – Keumbu
- 4 0213 – Kiamokama
- 4 0214 – Marani
- 4 0215 – Masimba
- 4 0218 – Nyangusu
- 4 0220 – Riosiri
- 4 0229 – Tabaka
- 4 0514 – Nyaramba
- 4 0515 – Kegogi
- 4 0516 – Magena
#46 Nyamira County Postal Codes
- 4 0221 – Omogonchoro
- 4 0500 – Nyamira
- 4 0501 – Ikonge
- 4 0502 – Nyansiongo
- 4 0503 – Gesima
- 4 0506 – Kebirigo
- 4 0507 – Magombo
- 4 0508 – Magwagwa
- 4 0510 – Mokomoni
- 4 0511 – Rigoma
- 4 0512 – Riochanda
- 4 0513 – Tombe
#47 Nairobi City Postal Codes
- 0 0100 – Nairobi Gpo
- 0 0101 – Jamia
- 0 0102 – State Law Office-Sheria HSE
- 0 0200 – City Square
- 0 0202 – Kenyatta Hospital
- 0 0231 – Mbari Ya Njiku
- 0 0233 – Karatu
- 0 0235 – Mundoro
- 0 0236 – Kiamwangi
- 0 0300 – Ronald Ngala Street
- 0 0400 – Tom Mboya Street
- 0 0500 – Enterprise Road
- 0 0501 – Jkia
- 0 0502 – Karen
- 0 0503 – Mbagathi
- 0 0504 – Mchumbi Road
- 0 0505 – Ngong Road
- 0 0506 – Nyayo Stadium
- 0 0507 – Viwandani
- 0 0508 – Yaya Towers
- 0 0509 – Langata Hardy
- 0 0510 – Makongeni
- 0 0512 – Riruta
- 0 0513 – Sasumua Rd
- 0 0515 – Buru Buru
- 0 0516 – Dandora
- 0 0517 – Uhuru Gardens
- 0 0518 – Kayole
- 0 0520 – Ruai
- 0 0521 – Embakasi Village
- 0 0522 – Makadara
- 0 0523 – Kibera
- 0 0600 – Ngara Road
- 0 0601 – Gigiri
- 0 0603 – Lavington
- 0 0604 – Lower Kabete
- 0 0605 – Uthiru
- 0 0606 – Sarit Centre
- 0 0610 – Eastleigh
- 0 0611 – Mathare Valley
- 0 0612 – Highridge
- 0 0613 – Waithaka
- 0 0615 – Kariobangi
- 0 0618 – Ruaraka
- 0 0619 – Muthaiga
- 0 0620 – Mobil Plaza
- 0 0621 – Village Market
- 0 0623 – Parklands
- 0 0625 – Kangemi
- 0 0627 – Two Rivers
- 0 0800 – Westlands
- 0 0905 – Lusingeti
- 0 1029 – Migioini
- 00622 – Juja Rd
- 1 0224 – Nguyoini
- 3 0216 – Kakibora
- 3 0703 – Singore
- 4 0312 – Gembe
- 4 0406 – Agenga
- 4 0411 – Othoch Rapwong
- 4 0505 – Karota
- 4 0629 – Mudhiero
- 4 0629 – Ndere
- 4 0634 – Rangala
- 4 0639 – Koracha
- 5 0301 – Bunyore
- 5 0407 – Hakati
- 5 0415 – Budalangi
- 5 0419 – Kakemer
- 5 0420 – Kocholya
- 6 0217 – Gatimbi
- 8 0312 – Mashini
- 8 0316 – Kitivo
- 8 0408 – Lukore
- 9 0149 – Nthogoini
- 9 0216 – Mulango
- 9 0405 – Kavuti
- 9 0406 – Mathuki