Butterworth was a township occupying the southeastern part of the parish of Rochdale, in the hundred of Salford, Lancashire, England. It encompassed of land in the South Pennines which spanned the settlements of Belfield, Bleaked-gate-cum-Roughbank, Butterworth Hall, Clegg, Firgrove, Haughs, Hollingworth, Kitcliffe, Lowhouse, Milnrow, Newhey, Ogden, Rakewood, Smithy Bridge, Tunshill and Wildhouse. It extended to the borders of Crompton to the south, and to the highest points of Bleakedgate Moor and Clegg Moor, up to the ridge of Blackstone Edge, to the east, where its boundary was the old county boundary between Lancashire and Yorkshire.