The Diocese covers the whole of Kitui County and borders one archdiocese and six dioceses.
Kitui County and its neighbours
The Catholic Diocese of Kitui covers the whole of Kitui County. Along its borders lie one archdiocese and six dioceses, listed below by direction.
Neighbouring dioceses
To the south
Catholic Archdiocese of Mombasa
Taita Taveta
To the west
Catholic Diocese of Machakos
Machakos County
Catholic Diocese of Wote
Makueni County
To the north
Catholic Diocese of Embu
Embu County
Catholic Diocese of Meru
Tharaka
Catholic Diocese of Isiolo
Isiolo County
To the east
Catholic Diocese of Garissa
Garissa and Tana River Counties
Within these boundaries
The Diocese occupies approximately 30,496.4 square kilometres in the arid and semi-arid region of Eastern Kenya and forms part of the Ecclesiastical Province of Nairobi. Its 37 parishes are organized into six deaneries: Northern, Western, Central, Southern, Yatta and Eastern.