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historic county of central Scotland, including a section of the Grampian Mountains in the southern Highlands and a portion of the northern Scottish Lowlands, centred on the city of Perth. Most of Perthshire lies within the council area of Perth and Kinross. The southwestern portion of the county is part of the council area of Stirling, and a small section in the south around Yetts o' Muckhart lies within the council area of Clackmannanshire.