OL postcode area

The OL postcode area, also known as the Oldham postcode area, is a group of postcode districts around Ashton-under-Lyne, Bacup, Heywood, Littleborough, Oldham, Rochdale and Todmorden in England.

Whilst including almost all of Oldham and most of the wider Metropolitan Borough of Oldham, it is not exclusive to these areas, extending into most of the Metropolitan Borough of Rochdale and parts of the Tameside borough of Greater Manchester, and through a very small part of both Lancashire and West Yorkshire.