Atlas

Area codes
of Vietnam

A Vietnamese landline begins with its area code, three digits starting with 2 — 236 Đà Nẵng, 292 Cần Thơ — except Hanoi's 24 and Ho Chi Minh City's 28. Each of the sixty-three provinces of before July 2025 had one, and that is still where the codes are: the thirty-four provinces of today keep every old code on its old ground until the ministry's new ones take over. This map draws the codes where they are dialled, coloured by the digit after the 2, the region the plan handed them out by.

Grouping
203 — Quảng Ninh204 — Bắc Giang205 — Lạng Sơn206 — Cao Bằng207 — Tuyên Quang208 — Thái Nguyên209 — Bắc Kạn210 — Phú Thọ211 — Vĩnh Phúc212 — Sơn La213 — Lai Châu214 — Lào Cai215 — Điện Biên216 — Yên Bái218 — Hòa Bình219 — Hà Giang220 — Hải Dương221 — Hưng Yên222 — Bắc Ninh225 — Hải Phòng226 — Hà Nam227 — Thái Bình228 — Nam Định229 — Ninh Bình232 — Quảng Bình233 — Quảng Trị234 — Thừa Thiên Huế235 — Quảng Nam236 — Đà Nẵng237 — Thanh Hóa238 — Nghệ An239 — Hà Tĩnh24 — Hanoi251 — Đồng Nai252 — Bình Thuận254 — Bà Rịa–Vũng Tàu255 — Quảng Ngãi256 — Bình Định257 — Phú Yên258 — Khánh Hòa259 — Ninh Thuận260 — Kon Tum261 — Đăk Nông262 — Đắk Lắk263 — Lâm Đồng269 — Gia Lai270 — Vĩnh Long271 — Bình Phước272 — Long An273 — Tiền Giang274 — Bình Dương275 — Bến Tre276 — Tây Ninh277 — Đồng Tháp28 — Ho Chi Minh City290 — Cà Mau291 — Bạc Liêu292 — Cần Thơ293 — Hậu Giang294 — Trà Vinh296 — An Giang297 — Kiên Giang299 — Sóc TrăngAn GiangHồ Chí MinhBắc NinhThái NguyênCà MauVĩnh LongGia LaiĐồng NaiLâm ĐồngCần ThơCao BằngĐắk LắkĐiện BiênĐồng ThápTuyên QuangNinh BìnhHà NộiHà TĩnhHải PhòngPhú ThọHưng YênQuảng NgãiLai ChâuLạng SơnLào CaiTây NinhNghệ AnKhánh HòaQuảng TrịĐà NẵngQuảng NinhSơn LaThanh HóaHuế203Quảng Ninh204Bắc Giang205Lạng Sơn206Cao Bằng207Tuyên Quang208Thái Nguyên209Bắc Kạn210Phú Thọ211212Sơn La213Lai Châu214Lào Cai215Điện Biên216Yên Bái218Hòa Bình219Hà Giang220Hải Dương221222225226227228229232Quảng Bình233Quảng Trị234Thừa Thiên Huế235Quảng Nam236Đà Nẵng237238Nghệ An239Hà Tĩnh24Hanoi251Đồng Nai252Bình Thuận254Bà Rịa–Vũng Tàu255Quảng Ngãi256Bình Định257Phú Yên258Khánh Hòa259Ninh Thuận260Kon Tum261Đăk Nông262Đắk Lắk263Lâm Đồng269Gia Lai270Vĩnh Long271Bình Phước272Long An273274275276277Đồng Tháp28290Cà Mau291Bạc Liêu292293Hậu Giang294Trà Vinh296An Giang297299

How to read the map. Each patch is a province as it was until July 2025 and the numeral on it is its code, with the name beneath. The colour is the digit after the 2: 0 is the north-east, 1 the north-west, 2 the Red River delta, 3 the north-central coast, 5 the south-central coast, 6 the central highlands, 7 the south-east, 9 the Mekong delta; the two cities with two-digit codes, Hanoi and Ho Chi Minh City, take the colour of the region around them. The Provinces grouping draws the thirty-four provinces of today over the patches: where a line of today's provinces runs between two patches, two old provinces were left as they were; where several patches sit inside one, they were merged.

What changed in 2025. Resolution 202/2025 of the National Assembly merged the sixty-three provinces into thirty-four on 1 July 2025, and the Ministry of Science and Technology gave each new province an official code — the code of the province it is named for, so Tuyên Quang keeps 207 and the Hà Giang it absorbed will dial it too. Through the transition, which the ministry put at six months to a year, every old code works on its old ground, and that is what the map draws. The eleven provinces the resolution left alone keep their codes outright. The panel says, for each old code, which province it is in now and what that province's code will be.

Sources. Codes before 2025: Wikipedia, Telephone numbers in Vietnam — the grid of area codes, one per province of before July 2025. Codes since 2025: Wikipedia (Vietnamese), Mã điện thoại Việt Nam — the official code of each of the 34 provinces and the old codes each keeps in the transition, after the ministry's guidance of July 2025. Geometry: nguyenduy1133/Free-GIS-Data, provincial boundaries of before 2025, compiled from public sources; dissolved by code, by region and by the provinces of 2025.