Sadie was born in East Central, Brenham, Texas and currently lives along with her family in New Jersey. Her father was a math teacher as well as an American football coach. She has a younger sister Jacey and three elder brothers Mitchell, Spencer, and Caleb. Sadie Sink was interested in acting from the minority. When she was seven, alongside her brother Mitchell, she used to recreate Disney’s High School Musical.
Due to her obsession with acting from a young age of seven, her mother sent her to acting classes in a community theater. That landed her in a role of the revival of Annie in 2012. For the role, she took dancing lessons and vocal training as well. She also played in an Emmy winning series, ‘The Americans.' She’s been in shows like The Audience (2015). Sink also had a small role in Chuck. Sink played in her first movie in The Bleeder in 2016.
Sadie Sink is a vegan. Makani inspired her to be a vegetarian. Makani was Woody Harrelson’s daughter with whom she became very close while filming the movie, ‘The Glass Castle.' Their whole family was vegetarian.
Sadie participated in the Tony Awards event in 2015 with along with Helen Mirren and they danced together on the red carpet. In the same year, Mirren won the best Actress in the play for The Audience.
She is active in almost all popular social media like Facebook, Twitter, and Instagram. She started being active on social sites since September 2014. She keeps posting pictures, mostly with her younger sister Jacey, whose hair is red.
Her real-life best friend is Milley Bobby Brown who played Eleven on ‘Stranger Things.' Sink has some pictures with her BFF on Instagram as well. Sadie is presently single; however, she had an on-screen matchup with Caleb McLaughlin who appeared as Lucas on Stranger Things.
Sink’s net worth is estimated to be around $300,000. From her recent show, Stranger Things most of her co-stars like Finn Wolfhard, Mille Bobby Brown, Gaten Matarazzo, Noah Schnapp and Caleb Mclaughlin received the salary of around $30,000 each. This shows that Sink might have also earned the same amount and upgrade her finance.