The Kenepuru electorate is centered on the Kenepuru suburb of Porirua and includes the Porirua city centre, the western suburbs of Takapūwāhia, Onepoto and Tītahi Bay, the eastern suburbs of Rānui, Papakōwhai and Ascot Park, and the northern Wellington suburbs of Tawa, Redwood, Churton Park, Grenada North, Grenada Village, Ohariu and Johnsonville. In the 2025 boundary review three lower North Island electorates, Ōtaki, Mana and Ōhāriu, are reconfigured as two electorates, Kapiti and Kenepuru, with Kenepuru taking in parts of Ōhāriu and the southern half of Mana.