ISO 3166-2:TT

ISO 3166-2:TT is the entry for Trinidad and Tobago in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization, which defines codes for the names of the principal subdivisions of all countries coded in ISO 3166-1.
Currently for Trinidad and Tobago, ISO 3166-2 codes are defined for regional [corporations and municipalities of Trinidad and Tobago|nine regions, three boroughs, two cities and one ward].
Each code consists of two parts separated by a hyphen. The first part is, the ISO 3166-1 alpha-2 code of Trinidad and Tobago. The second part is three letters.

Current codes

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency.
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Code	Subdivision name	Subdivision category
	Arima	borough
	Chaguanas	borough
	Couva-Tabaquite-Talparo	region
	Diego [Martin region\|Diego Martin]	region
	Mayaro-Rio Claro	region
	Penal-Debe	region
	Port of Spain	city
	Princes Town	region
	Point Fortin	borough
	San Fernando	city
	Sangre Grande	region
	Siparia	region
	San Juan-Laventille	region
	Tobago	ward
	Tunapuna-Piarco	region

Changes

The following changes to the entry are listed on ISO's online catalogue, the Online Browsing Platform:

Effective date of change	Short description of change
2020-11-24	Change of category name from municipality to borough for TT-ARI, TT-CHA, TT-PTF; Change of subdivision category name from municipality to city for TT-POS, TT-SFO; Update List Source
2015-11-27	Deletion of regions TT-ETO, TT-RCM, TT-WTO; addition of region TT-MRC; addition of one ward TT-TOB; update List Source