Portstewart (Irish: Port Stíobhaird) is a small town in County Londonderry, Northern Ireland. It had a population of 8,003 people in the 2011 Census. It is a seaside resort neighbouring Portrush. Its harbour and scenic coastal paths form an Atlantic mosey leading to 2 miles of golden strand (Portstewart Strand). Portstewart is probably best known for this sandy beach, popular later surfers.