stylistic:tone, structural:expansion
Zoroastrianism

Karachi's affluent and influential Parsis have lived in the region in the 12th century, though the modern community dates from the mid 19th century when they served as military contractors and commissariat agents to the British. Further waves of Parsi immigrants from Persia settled in the city in the late 19th century. The population of Parsis in Karachi and throughout South Asia is in continuous decline due to low birth-rates and migration to Western countries.

In 2023, according to the 2023 census, approximately 1,435 Parsis are left in Karachi.