| Value | Category |
|---|---|
| 010 | Nairobi |
| 021 | Kiambu |
| 022 | Kirinyaga |
| 023 | Murang'a |
| 024 | Nyandarua |
| 025 | Nyeri |
| 026 | Central Province not specified |
| 031 | Kilifi |
| 032 | Kwale |
| 033 | Lamu |
| 034 | Mombasa |
| 035 | Taita Taveta |
| 036 | Tana River |
| 037 | Coast Province not specified |
| 041 | Embu |
| 042 | Isiolo |
| 043 | Kitui |
| 044 | Machakos |
| 045 | Marsabit |
| 046 | Meru |
| 047 | Eastern Province not specified |
| 051 | Garissa |
| 052 | Mandera |
| 053 | Wajir |
| 054 | N.E Province not specified |
| 061 | Kisii |
| 062 | Kisumu |
| 063 | Siaya |
| 064 | South Nyanza |
| 065 | Nyanza Province not specified |
| 071 | Kajiado |
| 072 | Kericho |
| 073 | Laikipia |
| 074 | Nakuru |
| 075 | Nandi |
| 076 | Narok |
| 081 | Baringo |
| 082 | Elgeyo Markwet |
| 083 | Samburu |
| 084 | Trans Nzoia |
| 085 | Turkana |
| 086 | Uasin Gishu |
| 087 | West Pokot |
| 088 | R.Valley Province not specified |
| 091 | Bungoma |
| 092 | Busia |
| 093 | Kakamega |
| 094 | Western Province not specified |
| 095 | Kenya not specified |
| 096 | Tanzania |
| 097 | Uganda |
| 098 | Resident outside Kenya |
| 998 | Unknown |
| 999 | NIU (not in universe) |