Nyamira county comprise of 4 constituencies namely; Kitutu Masaba, Borabu, North Mugirango and West Mugirango.
Read Also; list of nyamira county government ministers and how to apply for tender
Hon. Ben Momanyi is the current member of parliament for Borabu, Hon. Shadrack Mose is mp for Kitutu Masaba, Hon.Joash Nyamoko is mp for West Mugirango and Hon. Vincent Kemosi is mp for North Mugirango.
The county has 20 wards.
The table below shows summarized details of Nyamira County.
| No. | Constituency | Member of Parliament (MP) | Wards |
| 1. | Borabu | Hon. Ben Momanyi | Makenene |
| Kiabonyoru | |||
| Esise | |||
| Nyansiongo | |||
| 2. | Kitutu Masaba | Hon. Shadrack Mose | Rigoma |
| Gachuba | |||
| Kemera | |||
| Magombo | |||
| Manga | |||
| Gesima | |||
| 3. | North Mugirango | Hon Joash Nyamoko | Itibo |
| Bomwagamo | |||
| Bokeira | |||
| Magwagwa | |||
| Ekerenyo | |||
| 4. | West Mugirango | Hon. Vincent Kemosi | Nyamaiya |
| Bogichora | |||
| Bosamaro | |||
| Bonyamatuta | |||
| Township |