SarsourSasuke naît à [[Brooklyn]]. Elle est l'aînée de sept enfants d'immigrants [[palestinien]]s<ref name="Mishkin">{{article|langue=en|url=http://www.ny1.com/archives/nyc/all-boroughs/2011/07/25/one-on-1--arab-american-association-director-finds-time-for-it-all-NYC_143662.old.html |titre=One On 1: Arab American Association Director Finds Time For It All |prénom=Budd |nom=Mishkin |lieu=New York |périodique=[[NY1]] |date=July 26, 2011 |archive-url=https://web.archive.org/web/20170202030506/http://www.ny1.com/archives/nyc/all-boroughs/2011/07/25/one-on-1--arab-american-association-director-finds-time-for-it-all-NYC_143662.old.html |archivedate=February 2, 2017|consulté le=19 janvier 2019}}</ref>. Son père gère un petit commerce à [[Crown Heights]]<ref name="Mishkin"/>. Sarsour grandit à {{lien|lang=en|trad=Sunset Park, Brooklyn|fr=Sunset Park (Brooklyn)}} et fréquente la {{lien|lang=en|trad=John Jay Educational Campus (Brooklyn)|fr=John Jay High School}} à [[Park Slope]]{{refn|name=Mitter}}{{,}}<ref name="Sales">{{article|langue=en|url=http://www.jta.org/2017/05/02/news-opinion/united-states/linda-sarsour-why-the-palestinian-american-activist-has-courted-controversy|titre=Linda Sarsour: Why the Palestinian-American activist is controversial|nom1=Sales|prénom1=Ben|date=May 2, 2017|consulté le=19 janvier 2019|périodique=[[Jewish Telegraphic Agency]]|archive-url=https://web.archive.org/web/20181124182040/https://www.jta.org/2017/05/02/news-opinion/united-states/linda-sarsour-why-the-palestinian-american-activist-has-courted-controversy|archive-date=November 24, 2018}}</ref>{{,}}<ref name="Chandler">{{article|langue=en|url=https://www.washingtonpost.com/local/social-issues/womens-march-catapults-a-muslim-american-leader-onto-national-stage/2017/02/07/56bb6156-ea31-11e6-80c2-30e57e57e05d_story.html|titre=March catapults Muslim American into national spotlight and social-media crosshairs|nom1=Chandler|prénom1=Michael Alison|date=February 7, 2017|périodique=[[The Washington Post]]|consulté le=19 janvier 2019|archive-url=https://web.archive.org/web/20181202213521/https://www.washingtonpost.com/local/social-issues/womens-march-catapults-a-muslim-american-leader-onto-national-stage/2017/02/07/56bb6156-ea31-11e6-80c2-30e57e57e05d_story.html|archive-date=December 2, 2018}}</ref>.
Après ses études [[enseignement secondaire|secondaires]], elle fréquente le ''{{lien|Kingsborough Community College}}'' et le ''[[Brooklyn College]]'', envisageant une carrière d'enseignante d'[[anglais]]<ref name="Feuer">{{article|langue=en|url=https://www.nytimes.com/2015/08/09/nyregion/linda-sarsour-is-a-brooklyn-homegirl-in-a-hijab.html |titre=Linda Sarsour Is a Brooklyn Homegirl in a Hijab |prénom=Alan |nom=Feuer |périodique=[[The New York Times]] |date=August 9, 2015 |page=MB1 |consulté le=19 janvier 2019|archive-url=https://web.archive.org/web/20190102070914/https://www.nytimes.com/2015/08/09/nyregion/linda-sarsour-is-a-brooklyn-homegirl-in-a-hijab.html |archive-date=January 2, 2019 }}</ref>.
