Peter Sarsgaard was born 7 March 1971 in St. Clair County, Illinois, United States to John Dale Sarsgaard (1943-2018) and Judy Lea Reinhardt (1947-2009) . He married Margalit Ruth Gyllenhaal (1977-) 2 May 2009 in Italy.
|Offspring of Peter Sarsgaard and Margalit Ruth Gyllenhaal (1977-)|
|Ramona Sarsgaard (2006)||3 October 2006 New York City, New York, United States|
|Gloria Ray Sarsgaard (2012)||19 April 2012 New York City, New York, United States|