Southbourne is a suburb of Bournemouth, in the unitary authority area of Bournemouth, Christchurch and Poole, in the ceremonial county of Dorset, England. It is situated between Boscombe and Christchurch. The area was previously known as Stourfield. Strictly, Southbourne refers to the area near to the coast; areas further inland are West Southbourne, Tuckto…Southbourne is a suburb of Bournemouth, in the unitary authority area of Bournemouth, Christchurch and Poole, in the ceremonial county of Dorset, England. It is situated between Boscombe and Christchurch. The area was previously known as Stourfield. Strictly, Southbourne refers to the area near to the coast; areas further inland are West Southbourne, Tuckton and Wick. It was historically part of Hampshire until 1974.