Portstewart is a small town in County Londonderry, Northern Ireland. It had a population of 7,803 people in the 2001 Census. It is a seaside resort neighbouring Portrush. Its harbour and scenic coastal paths form an Atlantic promenade leading to 2 miles of golden strand (Portstewart Strand). Portstewart is probably best known for this sandy beach, popular with surfers.