Here is the complete list of all county codes in Kenya, as defined in 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 |
| 026 | Uasin Gishu |
| 027 | Trans-Nzoia |
| 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 |
This list provides all counties in Kenya, each with its unique code for administrative purposes.
