UK Area Code Finder
Quick and easy telephone dialling code information
UK area code 01858 covers Market Harborough in the county of Leicestershire.
Other areas using 01858 numbers include Clipston, Dingley, East Langton, Hallaton, Husbands Bosworth, Medbourne Green and Welford.
Local telephone numbers are six digits long. An 01858 number should be displayed in the format:
(01858) xxxxxx.