| 2006 | |
|---|---|
| Nairobi (City) | 167.765 |
| Bungoma | 140.234 |
| Nakuru | 140.104 |
| Machakos | 130.262 |
| Makueni | 127.471 |
| Trans Nzoia | 107.543 |
| Kiambu | 104.121 |
| Uasin Gishu | 95.415 |
| Nandi | 88.513 |
| Nyeri | 84.908 |
| Mombasa | 82.971 |
| Kwale | 76.337 |
| Kitui | 73.058 |
| Vihiga | 70.603 |
| Kisumu | 70.399 |
| Nyamira | 66.975 |
| Siaya | 63.126 |
| Kakamega | 63.035 |
| Kilifi | 61.112 |
| Busia | 59.008 |
| Migori | 56.917 |
| Nyandarua | 56.516 |
| Bomet | 50.609 |
| Kisii | 48.646 |
| Baringo | 48.381 |
| Turkana | 48.004 |
| Garissa | 47.757 |
| West Pokot | 44.603 |
| Narok | 44.391 |
| Muranga | 42.121 |
| Taita Taveta | 39.670 |
| Kirinyaga | 39.235 |
| Laikipia | 38.600 |
| Wajir | 36.872 |
| Kajiado | 34.090 |
| Mandera | 32.241 |
| Embu | 31.070 |
| Homa Bay | 28.178 |
| Tana River | 27.870 |
| Kericho | 27.253 |
| Samburu | 18.390 |
| Marsabit | 15.901 |
| Isiolo | 11.067 |
| Lamu | 9.114 |