UK Area Code Finder
Quick and easy telephone dialling code information
UK area code 01666 covers Malmesbury in the county of Wiltshire.
Other areas using 01666 numbers include Brinkworth, Crudwell, Hullavington, Minety, Sherston, Tetbury and Westonbirt.
Local telephone numbers are six digits long. An 01666 number should be displayed in the format: