Map of the 01491 Henley-on-Thames STD dialling Area Code
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The Henley-on-Thames 01491 Area Code (Henley-on-Thames Dialling Code)

The 01491 area code is a 4 digit geographical dialling code (excluding the zero) used in telecommunications for the Henley-on-Thames area.

The local telephone numbers within the 01491 are 6 digits long.

The correct format in which to write a telephone number from the Henley-on-Thames area code is (01491) xxxxxx.

Where is the 01491 Area Code?

The Henley-on-Thames 01491 dialling code intersects the counties of Buckinghamshire, Oxfordshire and West Berkshire in the South East Region of the UK.

When do I need to use the 01491 Henley-on-Thames dialling code?

You will need to use a dialling code if you are calling from a mobile phone or a landline outside of the 01491 Henley-on-Thames 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 01491 dialling code.

Phoning the 01491 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 (1491).

RegionInternational PrefixCountry CodeArea Code
United States and Canada011441491
Europe00441491
Australia0011441491

Origins of the 01491 Henley-on-Thames 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 0491.

the historic mnemonic code for the 01491 area was HY1. The first two characters are taken from the letters H and Y in HenleY-on-thames. On an old rotary dial telephone this was entered by dialling the numbers 4, 9 and 1.

picture showing an old rotary dial for the 01491 Henley-on-Thames area code
An old rotary dial for the 01491 Henley-on-Thames area code.

Map of the 01491 Henley-on-Thames dialling Code Area

The shaded area on the map represent the estimated extent of the 01491 Henley-on-Thames phone area code.

The blue icons on the map represent the locations of telephone exchanges serving the 01491 area. Click on an icon for more details

Map of the 01491 Henley-on-Thames area code
Map of the 01491 Henley-on-Thames area code and surrounding areas

Towns and Villages within the Henley-on-Thames 01491-Henley-on-Thames dialling Code

Benson
Brightwell-cum-Sotwell
Cholsey
Crowmarsh Gifford
Goring
Henley-on-Thames
High Wycombe
Nettlebed
Rotherfield Peppard
South Stoke
Stoke Row
Streatley
Upper Basildon
Wallingford
Watlington (South Oxfordshire)
Woodcote

Known Telephone Exchanges within the Henley-on-Thames 01491-Henley-on-Thames dialling Code

Wallingford (THWL) Oxfordshire
Cholsey (THCLY) Oxfordshire
Watlington (THWT) Oxfordshire
Checkendon (THCKN) Oxfordshire
Henley-on-thames (THHT) Oxfordshire