西部省 (Western Province)
西部省分为16个县:
* 1) Bungoma East District (Webuye District)
* 2) Bungoma North District
* 3) Bungoma South District
* 4) Bungoma West District (Sirisia District)
* 5) Bunyala District
* 6) 布西亞區
* 7) Butere District
* 8) Emuhaya District