 In 1880 the Hollinwood and Crossbank parts of Chadderton and Ashton-under-Lyne townships were added to the Borough of Oldham.Oldham Above Town and Oldham Below Town were, from 1851 until c.1881, statistical units used for the gathering and organising of civil registration information, and output of census data.When the administrative county of Lancashire was created by the Local Government Act 1888, Oldham was elevated to become the County Borough of Oldham and was outside the jurisdiction of the Lancashire County Council or, in modern terms, a unitary authority area.