An upazila (Bengali: উপজেলা, romanized: upajēlā, lit. 'sub-district' pronounced: ['upɘdʒeːlaː]), formerly called thana, is an administrative division in Bangladesh, functioning as a sub-unit of a district. It can be seen as an analogous to a county or a borough of Western countries. Rural upazilas are further administratively divided into union council areas (union parishads).

Quick Facts Upazila, Category ...

Upazila
Category	Administrative divisions
Location	Bangladesh
Created	1982
Number	495
Populations	596,886–1,634,750
Areas	572–2,829 km2
Government	Upazila Nirbahi Officer; UNO (Administrator) Upazila Parishad (Council) UP Chairman (Executive)
Subdivisions	Union councils (4,554)

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Bangladesh has 495 upazilas.^[1][2][3] The upazilas are the second lowest tier of regional administration in Bangladesh. The administrative structure consists of divisions (8), districts (64), upazilas (495) and union parishads (UPs). This system of devolution was introduced by the former military ruler and president of Bangladesh, Lt-Gen Hossain Muhammad Ershad, in an attempt to strengthen local government.

Below UPs, villages (gram) and para exist, but these have no administrative power and elected members. The Local Government Ordinance of 1982 was amended a year later, redesignating and upgrading the existing thanas as upazilas.^[4]

Upazilas were formerly known as thana, which literally means police station. Despite the meaning, thanas functioned much as an administrative and geographic region, much as today's upazilas. In 1982 thanas were re-termed to as upazilas with provisions for semi-autonomous local governance. This system was reverted to the thana system in 1992. Later in 1999 geographic regions under administrations of thanas were converted into upazilas.^[5] All administrative terms in this level were renamed from thana to upazila. For instance, thana nirbahi officer (lit. thana executive officer) was renamed upazila nirbahi officer (lit. upazila executive officer).

The word thana is now used to solely refer to police stations. Generally, there is one police station for each upazila, but larger administrative units may have more than one police station covering different regions. However, it was complicated again and currently, Upazilas which combinely form "Administrative Districts" are known as Thanas. For example: Panchlaish Thana, Double Mooring Thana under Chittagong district.

On 26 July 2021, Khandker Anwarul Islam announced the renaming of Dakshin Sunamganj Upazila to "Shantiganj Upazila" as well as the creation of three new upazilas; Eidgaon Upazila in Cox's Bazar District, Madhyanagar Upazila in Sunamganj District and Dasar Upazila in Madaripur District.^[6]

• Divisions of Bangladesh
• Districts of Bangladesh
• Villages of Bangladesh
• Unions of Bangladesh