The Parish of Marulan is a parish of Argyle County located with the Goulburn Mulwaree local government area, which includes the towns of Marulan and Marulan South. The parish is bounded by Barbers Creek to the east, a small part of the Shoalhaven River to the south-east, and Jerrara Creek to the south. The Hume Highway and the Southern Highlands railway line run through the parish.