Sjömarken is a locality situated in Borås Municipality, Västra Götaland County, Sweden. It had 2,829 inhabitants in 2010.Here you can find a pizzeria, a kiosk, an antique store, a boat store, a squash hall, and a very active sports club, with football and table tennis as main sports, a number of companies and a beach, "Sjömarkensbadet".