Mumias is contained in
Kakamega
County.
Boundary Changes
Next Boundaries
- 48.6% of this area was subsequently in Mumias East from 5th March 2013 to 16th July 2017
- 37.7% of this area was subsequently in Mumias West from 5th March 2013 to 16th July 2017
- 13.0% of this area was subsequently in Matungu from 5th March 2013 to 16th July 2017
There were also overlaps of less than 1% with
Butere
,
Kanduyi
,
Lurambi
,
Navakholo
,
Ugenya
and
Ugunja.