List of 47 counties in Kenya and their codes

1. Mombasa County – County Code: 01
2. Kwale County – County Code: 02
3. Kilifi County – County Code: 03
4. Tana River County – County Code: 04
5. Lamu County – County Code: 05
6. Taita/Taveta County – County Code: 06
7. Garissa County – County Code: 07
8. Wajir County – County Code: 08
9. Mandera County – County Code: 09
10. Marsabit County – County Code: 10
11. Isiolo County – County Code: 11
12. Meru County – County Code: 12
13. Tharaka-Nithi County – County Code: 13
14. Embu County – County Code: 14
15. Kitui County – County Code: 15
16. Machakos County – County Code: 16
17. Makueni County – County Code: 17
18. Nyandarua County – County Code: 18
19. Nyeri County – County Code: 19
20. Kirinyaga County – County Code: 20
21. Murang’a County – County Code: 21
22. Kiambu County – County Code: 22
23. Turkana County – County Code: 23
24. West Pokot County – County Code: 24
25. Samburu County – County Code: 25
26. Trans Nzoia County – County Code: 26
27. Uasin Gishu County – County Code: 27
28. Elgeyo/Marakwet County – County Code: 28
29. Nandi County – County Code: 29
30. Baringo County – County Code: 30
31. Laikipia County – County Code: 31
32. Nakuru County – County Code: 32
33. Narok County – County Code: 33
34. Kajiado County – County Code: 34
35. Kericho County – County Code: 35
36. Bomet County – County Code: 36
37. Kakamega County – County Code: 37
38. Vihiga County – County Code: 38
39. Bungoma County – County Code: 39
40. Busia County – County Code: 40
41. Siaya County – County Code: 41
42. Kisumu County – County Code: 42
43. Homa Bay County – County Code: 43
44. Migori County – County Code: 44
45. Kisii County – County Code: 45
46. Nyamira County – County Code: 46
47. Nairobi City County – County Code: 47

These counties represent Kenya’s diverse regions, and each is governed by its own elected county government. The listed codes are part of the administrative setup for local governance and facilitate efficient service delivery across the country.