Brolin was born on February 12, 1968 in Santa Monica, California to James Brolin and to Jane Cameron Agee. He was raised in Corpus Christi, Texas. Brolin was married to Alice Adair from 1988 until they divorced in 1992. He has been married to Diane Lane since 2004. Brolin has two children from Adair. Lane filed for divorced in February 2013.
- Pfefferman, Naomi (February 9, 2009). "Josh Brolin Mines Emotional Depths". The Jewish Journal. http://www.jewishjournal.com/oscars/article/joshbrolin_200902191/. Retrieved February 19, 2009.[dead link]
- Barnes, Michael; Elizabeth Peterman (November 15, 2007). "Josh Brolin is everywhere these days, including Austin". Austin 360. http://www.austin360.com/movies/content/movies/stories/2007/11/1117brolin.html. Retrieved November 17, 2007.