1999년 상록구 성포동에 경수중학교의 개교를 필두로 하여 성안중학교가 개교하였으며, 2001년에는 고잔신도시의 조성에 따라 송호중학교·양지중학교·별망중학교가 문을 열었고, 안산 서북 지역에 와동중학교가 개교하였다.
Seongan Middle School was opened in Seongpo-dong, Sangnok-gu in 1999, with the opening of Seongan Middle School and in 2001, Songho Middle School, Yangji Middle School, and Byeolmang Middle School were opened in accordance with the creation of Gojan New Town, and Wadong Middle School was opened in northwestern area of Ansan.