Ulpha is a small village and civil parish in the Duddon Valley in the Lake District National Park in Cumbria, England. Historically in Cumberland, it forms part of the Cumberland unitary authority area. At Ulpha a road leaves the Duddon Valley to cross Birker Fell to the valley of Eskdale. In the 2001 census the parish had a population of 159, reducing at the …Ulpha is a small village and civil parish in the Duddon Valley in the Lake District National Park in Cumbria, England. Historically in Cumberland, it forms part of the Cumberland unitary authority area. At Ulpha a road leaves the Duddon Valley to cross Birker Fell to the valley of Eskdale. In the 2001 census the parish had a population of 159, reducing at the 2011 Census to 128.