NOTE: For more on the original settlement of Oldham, see Oldham in Lancashire.
The Metropolitan Borough of Oldham is a metropolitan borough of Greater Manchester, England. It had a population of 225,200 according to the 2011 UK census, and spans 55 square miles (142 km2). It lies amid the Pennines on elevated ground between the rivers Irk and Medlock, 5.3 miles (8.5 km) south-southeast of Rochdale, and 6.9 miles (11.1 km) northeast of the city of Manchester.
The borough was formed in 1974 as part of the provisions of the Local Government Act 1972 and is an amalgamation of the former County Borough of Oldham with the Chadderton, Crompton, Lees, Royton urban districts of Lancashire and the Saddleworth Urban District of the West Riding of Yorkshire.
For more information, see the EN Wikipedia article Metropolitan Borough of Oldham.