Amherst (2011 population 9,717; UA population 9,547) is a Canadian town in northwestern Cumberland County, Nova Scotia.Located at the northeast end of the Cumberland Basin, an arm of the Bay of Fundy, Amherst is strategically situated on the eastern boundary of the Tantramar Marshes 3 kilometres east of the interprovincial border with New Brunswick and 65 kilometres east of the city of Moncton.