Tin Hau is not a formally designated district in Hong Kong's administrative geography. The name is colloquial — it belongs to what the maps call Causeway Bay proper — and it spread because the MTR station opened in 1985 as "Tin Hau," named for its proximity to the Causeway Bay Tin Hau Temple. As the name Causeway Bay itself shifted eastward — pulled by the Causeway Bay Tram Terminus and later the Causeway Bay MTR station — the western portion of the neighborhood settled into the habit of calling itself Tin Hau instead. Place names in dense cities often drift this way, following transit infrastructure and popular usage rather than administrative boundaries. The goddess, in other words, gave her name to a station, and the station gave its name to a neighborhood.

What surrounds the Tin Hau MTR station gives a sense of the neighborhood's character. Victoria Park — Hong Kong Island's largest public park — exits from Tin Hau MTR on the A side. The Hong Kong Central Library, a 12-story structure that holds the territory's largest public book collection, exits on the B side. The Causeway Bay Sports Ground is nearby. Queen's College, described in local records as the first boys' school in Hong Kong, sits beside the station. Belilios Public School, historically the first girls' school, is also in the neighborhood, though it remains administratively within the Eastern District after a boundary adjustment in 2016 excluded it from the Wan Chai District reorganization. This density of institutions — library, park, schools, temple — around a single transit node is characteristic of how Hong Kong has organized its public life.

Electric Road is Tin Hau's main artery, running east-west through the neighborhood. At 150-160 Electric Road stands the Ngo Wong Temple (岳王古廟), dedicated to the Song dynasty general Yue Fei, a figure of enormous historical importance in Chinese culture — celebrated as the embodiment of loyalty and resistance to foreign invasion. His temple sits a few hundred meters from one dedicated to a sea goddess, which is itself a few minutes' walk from a public library and a major public park. Tin Hau MTR also connects easily to Fortress Hill to the east and the main Causeway Bay commercial district to the west, making the neighborhood a transitional zone between the entertainment intensity of Causeway Bay and the quieter residential character of North Point beyond.

The story of Tin Hau is inseparable from Hong Kong's long history of land reclamation — the ongoing process by which the harbor has been progressively narrowed and the island's coastline pushed outward. When the Tin Hau Temple was built in 1747, it sat at the water's edge; worshippers arriving by boat could reach it directly. Today it stands inland, separated from the sea by decades of fill. This transformation happened in stages over the nineteenth and twentieth centuries. The neighborhood that accumulated around the temple's new, landlocked position bears almost no resemblance to the fishing settlement that gave rise to the original structure. The goddess remains; the harbor has retreated. Tin Hau keeps the name and the temple, and the rest has changed around them.