Oldbury is a rural suburb situated within the southern fringe of the Perth metropolitan area in Western Australia. It is located approximately 48 kilometres south of Perth’s central business district and falls within the jurisdiction of the Shire of Serpentine-Jarrahdale. Bordered by Baldivis to the west and Byford to the north, Oldbury is accessible via the South Western Highway and is characterised by its predominantly flat agricultural landscape, interspersed with waterways and patches of native bushland.

Demographically, Oldbury has a small population compared to more urbanised suburbs in the Perth metro region. The suburb is primarily composed of large rural residential properties and farming lots, with many residents engaged in agricultural pursuits such as cattle farming, egg production, and horticulture. Due to its low-density development, residential properties typically feature larger land sizes, often exceeding several hectares, making it popular among those seeking a semi-rural lifestyle with proximity to the city.

Commercial activity in Oldbury is limited and mainly supports the needs of the local farming and semi-rural community. There are few retail or hospitality establishments within the suburb itself, with most commercial amenities located in neighbouring towns such as Mundijong or Rockingham. Local businesses tend to include agricultural supply stores, farm machinery services, and small-scale producers rather than larger retail chains. As a whole, Oldbury remains a tranquil and spacious enclave within easy reach of major urban centres, celebrated for its rural charm and relaxed atmosphere.