UK Area Codes and Phone Number Information

01437 area code

Haverfordwest and Clynderwen

The 01437 area code is for Clynderwern and Haverfordwest, and the surrounding areas.

Locations using 01437 numbers include:

The first digit of the six-digit local number usually indicates more precisely where it is associated with:

Number rangePrimary area*Other locations served
(01437) 2xxxxx  ClynderwenLlawhaden, Maenclochog
(01437) 3xxxxx  
(01437) 4xxxxx  
(01437) 5xxxxx  
(01437) 6xxxxx  HaverfordwestBroad Haven, Camrose, Clarbeston, Johnston, The Rhos, St Davids, Treffgarne
(01437) 7xxxxx  
(01437) 8xxxxx  
(01437) 9xxxxx  

* Telephone companies are officially required to issue numbers according to this pattern. Some smaller or newer operators may disregard the rules and use the same series of numbers across the entire area.

Most numbers using the 01437 area code are normal Haverfordwest and Clynderwen landlines but be aware that, as is the case for all UK area codes, such numbers may also be used for services without any physical link to the area. (More info)

01437 area code information

Area code:01437
Location:Haverfordwest (Hwlffordd) / Clynderwen (Clunderwen)
Council area:Pembrokeshire
Call costs:Normal landline rate
Local number length:6 digits
Number format:01437 xxxxxx
International number format:+44 1437 xxxxxx
Number shortages predicted:No
Last code change:April 1995 (previously 0437)

Area code history

Haverfordwest and Clynderwen previously had separate area codes. Numbers from the former Clynderwen 0991 area code were absorbed into the 0437 area code (which later became 01437) sometime before the mid-1990s.

The 0991 prefix was reused for premium rate services later in the 1990s.
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