Okoia is a suburb which lies within the Territorial Authority of Wanganui, one of 28 residential suburbs which form the wider region. Okoia is the 16th largest suburb of Wanganui in terms of the total number of residential housing stock. Okoia provides a range of housing stock, with the earliest residential housing recorded in the area constructed between 1880 - 1889. The majority of the residential housing stock in the locality was constructed between 2000 - 2009. Residential housing stock in Okoia is made up of approximately 24% residential housing , 1% residential investment housing and 75% lifestyle properties.