List of All County Codes in Kenya as of 2020

Kenya has a total of 47 counties as of 2020. The geographical units were envisioned by the 2010 Constitution of Kenya as the units of devolved government. Turkana County is the largest county in Kenya while Mombasa county is the smallest county in Kenya by size. 

Below is a list of all county codes in Kenya as envisioned by the 2010 Constitution of Kenya.

Code County
001 Mombasa
002 Kwale
003 Kilifi
004 Tana River
005 Lamu
006 Taita–Taveta
007 Garissa
008 Wajir
009 Mandera
010 Marsabit
011 Isiolo
012 Meru
013 Tharaka-Nithi
014 Embu
015 Kitui
016 Machakos
017 Makueni
018 Nyandarua
019 Nyeri
020 Kirinyaga
021 Murang’a
022 Kiambu
023 Turkana
024 West Pokot
025 Samburu
027 Trans-Nzoia
026 Uasin Gishu
028 Elgeyo-Marakwet
029 Nandi
030 Baringo
031 Laikipia
032 Nakuru
033 Narok
034 Kajiado
035 Kericho
036 Bomet
037 Kakamega
038 Vihiga
039 Bungoma
040 Busia
041 Siaya
042 Kisumu
043 Homa Bay
044 Migori
045 Kisii
046 Nyamira
047 Nairobi