14/05/2026
Kenya has *47 counties* as defined by the 2010 Constitution. Here’s the list with land area. Areas are total land area in km², excluding inland water unless noted.
County Land Area (km²)
**1. Mombasa** 229.7
**2. Kwale** 8,270.2
**3. Kilifi** 12,610.0
**4. Tana River** 38,437.0
**5. Lamu** 6,497.7
**6. Taita-Taveta** 17,084.0
**7. Garissa** 44,174.1
**8. Wajir** 56,685.9
**9. Mandera** 25,991.5
**10. Marsabit** 70,961.2
**11. Isiolo** 25,336.9
**12. Meru** 6,936.2
**13. Tharaka-Nithi** 2,638.8
**14. Embu** 2,818.0
**15. Kitui** 30,496.4
**16. Machakos** 6,043.0
**17. Makueni** 8,008.8
**18. Nyandarua** 3,245.8
**19. Nyeri** 3,337.0
**20. Kirinyaga** 1,478.1
**21. Murang’a** 2,559.0
**22. Kiambu** 2,543.5
**23. Turkana** 68,662.0
**24. West Pokot** 9,169.4
**25. Samburu** 21,022.4
**26. Trans Nzoia** 2,495.6
**27. Uasin Gishu** 3,345.2
**28. Elgeyo-Marakwet** 3,049.7
**29. Nandi** 2,884.5
**30. Baringo** 11,075.3
**31. Laikipia** 9,461.8
**32. Nakuru** 7,495.1
**33. Narok** 17,933.1
**34. Kajiado** 21,900.8
**35. Kericho** 2,479.0
**36. Bomet** 2,037.8
**37. Kakamega** 3,050.3
**38. Vihiga** 531.0
**39. Bungoma** 2,206.9
**40. Busia** 1,695.0
**41. Siaya** 2,530.0
**42. Kisumu** 2,086.0
**43. Homa Bay** 3,154.7
**44. Migori** 2,586.4
**45. Kisii** 1,317.5
**46. Nyamira** 899.4
**47. Nairobi** 696.1
*Notes:*
- *Largest*: Marsabit at 70,961 km², bigger than Sri Lanka.
- *Smallest*: Vihiga at 531 km², about the size of Singapore.
- *Total land area*: ∼581,309 km². Kenya’s total area including water is ∼580,367 km², so these numbers exclude lakes like Turkana and Victoria where they fall within county boundaries.
- Source: Kenya National Bureau of Statistics 2019 census area data, which is the official reference used by the Independent Electoral and Boundaries Commission.
Want me to sort this by population density or GDP instead, so you can see which counties are most crowded/wealthy per km²?