Chittagonian is spoken in Southeastern Bangladesh throughout Chittagong Division but mainly in Chittagong District and Cox's Bazar District . It has an estimated number of around 14 million speakers in Bangladesh, and also in countries where many Chittagonians have migrated. It has no official status and is not taught at any level in schools. It is regarded by many Bangladeshis, including most Chittagonians, to be a crude form of Bangla, as all educated Chittagonians are schooled in Bangla.
Essentially, Chittagonian has no standard form and is rather a continuum of different dialects, varying with location from north to south and also by religion between Muslims (professed by most Chittagonians) and Hindus. Variation between Muslims and Hindus is strictly in terms of vocabulary, whereas by location, grammar is varied as well as vocabulary. The Rohingya are a community of ethnically Chittagonian related Muslims who spoke the Muslim dialect of southeastern region of Bangladesh bordering Burma and migrated to Arakan.