Map of the 029 Cardiff STD dialling Area Code
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The Cardiff 029 Area Code (Cardiff Dialling Code)

The 029 area code is a 2 digit geographical dialling code (excluding the zero) used in telecommunications for the Cardiff area.

The local telephone numbers within the 029 are 8 digits long.

The correct format in which to write a telephone number from the Cardiff area code is (029) xxxx xxxx.

Where is the 029 Area Code?

The Cardiff 029 dialling code intersects the counties of Caerphilly, Cardiff/Caerdydd, Carmarthenshire/Sir Gaerfyrddin, Rhondda Cynon Taf and Vale of Glamorgan/Bro Morgannwg in the Wales Region of the UK.

When do I need to use the 029 Cardiff dialling code?

You will need to use a dialling code if you are calling from a mobile phone or a landline outside of the 029 Cardiff dialling code area. If you are calling a local number within the same area code with a landline telephone you do not need to use the 029 dialling code.

Phoning the 029 Dialling Code from Outside of the UK

If you are calling from outside of the UK. You will need to add the code for dialling internationally. This varies country to country, followed by the UK country code (44) followed by the area code without the initial zero (29).

RegionInternational PrefixCountry CodeArea Code
United States and Canada0114429

Origins of the 029 Cardiff Area Code

Before the 16th April 1995 known as PhONEday which changed telephone area codes by inserting a 1 at the beginning. The area code was 0222.

The area code for Cardiff (01222) changed to become 029 after the Big Number Change on the 22nd April 2000.

the historic mnemonic code for the 029 area was CA2. The first two characters are taken from the letters C and A in CArdiff. On an old rotary dial telephone this was entered by dialling the numbers 2, 2 and 2.

picture showing an old rotary dial for the 029 Cardiff area code
An old rotary dial for the 029 Cardiff area code.

Map of the 029 Cardiff dialling Code Area

The shaded area on the map represent the estimated extent of the 029 Cardiff phone area code.

The blue icons on the map represent the locations of telephone exchanges serving the 029 area. Click on an icon for more details

Map of the 029 Cardiff area code
Map of the 029 Cardiff area code and surrounding areas

Towns and Villages within the Cardiff 029-Cardiff dialling Code

Dinas Powis
Taff's Well

Known Telephone Exchanges within the Cardiff 029-Cardiff dialling Code

Cardiff Empire (SWCFATE) Cardiff
Roath (SWRTH) Cardiff
Llanishen (SWLNI) Cardiff
Whitchurch (SWWXC) Cardiff
Taffs Well (SWTAT) Rhondda Cynon Taff
Radyr (SWRRY) Cardiff
Pentyrch (SWPTY) Cardiff
Llanedeyrn (SWLLD) Cardiff
Castleton (SWCTE) Newport
Llanrumney (SWSZX) Cardiff
Llandaff (SWLJZ) Cardiff
Culverhouse (SWCUV) Cardiff
Penarth (SWPBM) Vale of Glamorgan
Dinas Powys (SWDPW) Vale of Glamorgan
Sully (SWXUU) Vale of Glamorgan
Caerphilly (SWCAB) Caerphilly
Senghenydd (SWXNH) Caerphilly