How Old Are the Stranger Things Kids?

Millie Bobby Brown was born on February 19, 2004, making her 18 years old as of the release of Stranger Things 4. The actress has various fashion campaigns and films under her belt, which includes Netflix's upcoming Enola Holmes 2 in 2022.

Eleven's love interest Mike is portrayed by Canadian actor Finn Wolfhard. Born on December 23, 2002, Wolfhard is now 19 years old as of the Stranger Things 4 release. From taking on Twitter trolls to touring with his band, as well as starring in Saint Laurent campaigns, Woolhard has a seriously been a busy teenager.

Gaten Matarazzo portrays loveable nerd Dustin on the show. In real life, the actor was born on September 8, 2002, making him 19 years old by the time Stranger Things 4 hits our screens. The multi-talented actor has an incredible singing voice, and also boasts his own prank show on Netflix.

New York-born Caleb McLaughlin plays Max's boyfriend Lucas in Stranger Things. McLaughlin, born on October 13, 2001, is 20 years old as of Season 4's release. In 2019, the actor opened up about his education while coming of age on the show. "I was home-schooled before I got into Stranger Things," he told People at the time. "I just finished high school, I graduated. So I’m done, but I’m going to college this fall."

One of the youngest cast members, Noah Schnapp (born October 3, 2004), was just 14 when Stranger Things 3 released on Netflix, making him 17 years old by the drop of Season 4. In 2020, Schnapp made his film debut in Waiting for Anya, in which he plays a young shepherd helping smuggle Jewish children from France into Spain during World War II. Now, he's an entrepreneur and investor. (He launched the TBH snack brand in November 2021.)

Everyone's favorite Netflix daddy was born on April 24, 1992, making him 3o years old on Season 4's release day. From teasing fans with an unseen Speedo moment to being #hairgoals incarnate, Joe Keery's Steve has had the show's most unexpected character development, making us way more thirsty in the process.

Many of those thirsty for Steve in the show's second season came unprepared for Montgomery's thirst-trap performance as bad boy lifeguard Billy Hargrove throughout Season 3. Born on November 33, 1994, the Australian actor—now 27—was 24 years old when the third season dropped. Prior to joining the hit Netflix series, Montgomery played the Red Ranger in John Gatin's 2017 Power Rangers reboot.

Sadie Sink was born on April 16, 2002, making her 20 years old by the fourth season of Stranger Things. Since appearing on the show as the courageous stepsister to Billy Hargrove, she's starred in additional horror projects on Netflix—including films Eli in 2019 and Fear StreetPart 2: 1978 in 2021. She was also personally picked by Taylor Swift to star across Teen Wolf's Dylan O'Brien in the singer's "All Too Well: The Short Film," which released in November 2021.

Maya Hawke, born on July 8, 1998, celebrated her 21st birthday just days after the Stranger Things 3 premiere, and is currently 23 years old. The daughter of Ethan Hawke and Uma Thurman, Maya made her onscreen debut in a BBC adaptation of Little Women in 2017 and was since seen in Quentin Tarantino's Once Upon a Time ... in Hollywood. She will also star in Bradley Cooper's directed film and Leonard Bernstein drama, Maestro, which is set to drop on Netflix in 2023.

Stranger Things 2 breakout star Priah Ferguson was just 12 by Season 3's release. Born on October 1, 2006, she is now 15 years old. Aside from rocking Marc Jacobs on the red carpet, Ferguson has passionately advocated for more on-screen representation of women of color. "Black girls don't have just one story, or one look, or one voice. It shows we've always had range and can lead in these genres. When people see us play strong roles or a variety of roles, it helps the world respect us more in those topics," she previously told @strongblacklead.

British actor Charlie Heaton was born on February 6, 1994, making him 28 years old. In real life, Heaton is a dad to 8-year-old son Archie Heaton, who recently celebrated his birthday on May 19th. The actor, who portrays Will's brother Jonathan on the show, has reportedly been dating on-screen love interest Natalia Dyer since 2016.

Nashville-born actress Natalia Dyer was born on January 13, 1997, making her 25 years old by the release of Stranger Things 4. In April 2019, Dyer celebrated the launch of Cartier's new Clash collection with BAZAAR.com. Discussing her sense of style, she revealed, "I work with Brad Goreski who puts things on me that I would never think to wear but that I actually love, to find new sides of me... I’m a fan of Prada and Dior, beautiful brands like that, but there are less well known brands that I’ve worn that I’ve really loved."