# ISO 3166-2:DO

ISO 3166-2:DO is the entry for the Dominican Republic in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
Currently for the Dominican Republic, ISO 3166-2 codes are defined for ten regions, 31 provinces and one district. The Distrito Nacional contains the capital of the country Santo Domingo and has special status equal to the provinces.
Each code consists of two parts, separated by a hyphen. The first part is DO, the ISO 3166-1 alpha-2 code of the Dominican Republic. The second part is two digits:
* 01: district
* 02–27: provinces as of late 1970s
* 28–30: provinces created in the 1980s and 1990s
* 31–32: provinces created in 2001 and 2002
* 33–42: regions

## Current codes

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).
Click on the button in the header to sort each column.

### Regions

| Code | Subdivision name (es) | Subdivision name (en) |
| DO-33 | Cibao Nordeste | Northeast Cibao |
| DO-34 | Cibao Noroeste | Northwest Cibao |
| DO-35 | Cibao Norte | North Cibao |
| DO-36 | Cibao Sur | South Cibao |
| DO-37 | El Valle | The Valley |
| DO-38 | Enriquillo | Enriquillo |
| DO-39 | Higuamo | Higuamo |
| DO-40 | Ozama | Ozama |
| DO-41 | Valdesia | Valdesia |
| DO-42 | Yuma | Yuma |

### Provinces and district

| Code | Subdivision name (es) | Subdivision name (en) | Subdivision category | Parent subdivision |
| DO-02 | Azua | Azua | province | DO-41 |
| DO-03 | Baoruco | Baoruco | province | DO-38 |
| DO-04 | Barahona | Barahona | province | DO-38 |
| DO-05 | Dajabón | Dajabon | province | DO-34 |
| DO-01 | Distrito Nacional (Santo Domingo) | Santo Domingo City | district | DO-40 |
| DO-06 | Duarte | Duarte | province | DO-33 |
| DO-08 | El Seibo | El Seibo | province | DO-42 |
| DO-07 | Elías Piña | Elias Pina | province | DO-37 |
| DO-09 | Espaillat | Espaillat | province | DO-35 |
| DO-30 | Hato Mayor | Great Herd | province | DO-39 |
| DO-19 | Hermanas Mirabal | Mirabal Sisters | province | DO-33 |
| DO-10 | Independencia | Independence | province | DO-38 |
| DO-11 | La Altagracia | La Altagracia | province | DO-42 |
| DO-12 | La Romana | La Romana | province | DO-42 |
| DO-13 | La Vega | La Vega | province | DO-36 |
| DO-14 | María Trinidad Sánchez | Maria Trinidad Sanchez | province | DO-33 |
| DO-28 | Monseñor Nouel | Monsignor Nouel | province | DO-36 |
| DO-15 | Monte Cristi | Christ Mountain | province | DO-34 |
| DO-29 | Monte Plata | Silver Mountain | province | DO-39 |
| DO-16 | Pedernales | Pedernales | province | DO-38 |
| DO-17 | Peravia | Peravia | province | DO-41 |
| DO-18 | Puerto Plata | Silver Port | province | DO-35 |
| DO-20 | Samaná | Samana | province | DO-33 |
| DO-21 | San Cristóbal | Saint Christopher | province | DO-41 |
| DO-31 | San José de Ocoa | Saint Joseph | province | DO-41 |
| DO-22 | San Juan | Saint John | province | DO-37 |
| DO-23 | San Pedro de Macorís | Saint Peter | province | DO-39 |
| DO-24 | Sánchez Ramírez | Sanchez Ramirez | province | DO-36 |
| DO-25 | Santiago | Santiago | province | DO-35 |
| DO-26 | Santiago Rodríguez | Santiago Rodriguez | province | DO-34 |
| DO-32 | Santo Domingo | Santo Domingo | province | DO-40 |
| DO-27 | Valverde | Valverde | province | DO-34 |

#### Notes

* 1 2 For reference only, English name not included in the ISO 3166-2 standard.

## Changes

The following changes to the entry have been announced in newsletters by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998. ISO stopped issuing newsletters in 2013.
| Edition/Newsletter | Date issued | Description of change in newsletter | Code/Subdivision change |
| Newsletter I-1 | 2000-06-21 | Introduction of new subdivision code elements taken from the Dominican Statistics Code. Correction of alphabetic sorting of subdivision names. Addition of 1 alternative name form | Codes: format changed (see below) |
| ISO 3166-2:2007 | 2007-12-13 | Second edition of ISO 3166-2 (this change was not announced in a newsletter) | Subdivisions added: DO-31 San José de Ocoa DO-32 Santo Domingo |
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 (en) |
| 2014-12-18 | Assign parent subdivision to DO-01 |
| 2014-10-29 | Add región (region) as top-level of subdivisions; add 10 regions DO-33 to DO-42; change subdivision name of DO-03, DO-08 and DO-19; update List Source |

### Codes changed in Newsletter I-1

Note: Two provinces were assigned the code DO-EP.
| Before | After | Subdivision name |
| DO-DN | DO-01 | Distrito Nacional (Santo Domingo) |
| DO-AZ | DO-02 | Azua |
| DO-BR | DO-03 | Bahoruco |
| DO-BH | DO-04 | Barahona |
| DO-DA | DO-05 | Dajabón |
| DO-DU | DO-06 | Duarte |
| DO-SE | DO-08 | El Seybo [El Seibo] |
| DO-EP | DO-09 | Espaillat |
| DO-HM | DO-30 | Hato Mayor |
| DO-IN | DO-10 | Independencia |
| DO-AL | DO-11 | La Altagracia |
| DO-EP | DO-07 | La Estrelleta [Elías Piña] |
| DO-RO | DO-12 | La Romana |
| DO-VE | DO-13 | La Vega |
| DO-MT | DO-14 | María Trinidad Sánchez |
| DO-MN | DO-28 | Monseñor Nouel |
| DO-MC | DO-15 | Monte Cristi |
| DO-MP | DO-29 | Monte Plata |
| DO-PN | DO-16 | Pedernales |
| DO-PR | DO-17 | Peravia |
| DO-PP | DO-18 | Puerto Plata |
| DO-SC | DO-19 | Salcedo |
| DO-SM | DO-20 | Samaná |
| DO-CR | DO-21 | San Cristóbal |
| DO-JU | DO-22 | San Juan |
| DO-PM | DO-23 | San Pedro de Macorís |
| DO-SZ | DO-24 | Sánchez Ramírez |
| DO-ST | DO-25 | Santiago |
| DO-SR | DO-26 | Santiago Rodríguez |
| DO-VA | DO-27 | Valverde |