Lohan was born in New York city and grew up in merrick and Cold Spring Harbor on Long Island in New York.She is the eldest child of Donata Dina (nee Sullivan) and Michael Lohan.Lohan has three younger siblings,all of whom were child models:Michael Jr.who appeared with her in The parent trap,sister Aliana,Who is also actress,and Dakota,the youngest Lohan child.Lohan is of Irish and Italian heritage and was raised as a catholic.
Her maternal family were "well known Irish catholic stalwarts" in merrick,with her great-grandfather.John L Sullivan,being a co-founder of the pro-life party in Long Island.Lohan attended public school on Long Island and was Cheerleader.She finished her studies at home through Laurel Springs School of Ojai,California.Her father was sentenced to four years in prison in the late 1980s.In 2005,he was sent works with Teen Challenge.In december 2005,Michael and Dina Lohan signed a separation agreement.In 2007 Lohan's parents announced that their divorce proceedings had been finalized.