In 1972, Thon Buri and Phra Nakhon provinces were combined into Krung Thep Maha Nakhon, and Bang Khae became a sub-district of the Phasi Charoen district of the newly combined province.
En 1972, Thon Buri y Phra Nakhon se integraron en Krung Thep Maha Nakhon, y Bang Khae se convirtió en un subdistrito de Phasi Charoen.