If you grew up in the 90s, you couldn't throw a rock without hitting a Baldwin. They were everywhere. You had Alec leading the charge, then Billy in every other romantic thriller, Stephen being the "wild one," and Daniel popping up in gritty dramas. It kinda felt like Hollywood was just a massive Baldwin family reunion for a solid decade.
But even with the "Baldwin Brothers" becoming a literal brand name, people still get the headcount wrong. Honestly, most folks think it’s just the four guys.
The truth? There are actually six of them.
Alec isn't just one of four; he’s one of six kids born to Alexander Rae Baldwin Jr. and Carol Newcomb Martineau. They grew up in a loud, cramped, and reportedly chaotic household in Massapequa, Long Island. If you’re wondering exactly how many siblings does Alec Baldwin have, the answer is five: three brothers and two sisters.
The Famous Four: Breaking Down the Baldwin Brothers
We have to start with the guys because, well, they made the name famous. Alec is the eldest of the four brothers, but he isn't the oldest child in the family (we'll get to that in a second).
Alec Baldwin (The Leader)
Born in 1958, Alec was the first to break into the industry. He was the high-achieving "Xander" (his childhood nickname) who went from Knots Landing to Beetlejuice and eventually became the Jack Donaghy we all know and love. He set the blueprint.
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Daniel Baldwin (The Second Brother)
Daniel arrived in 1960. He’s often remembered for his role on Homicide: Life on the Street and, later, his very public struggles with addiction that played out on reality TV. He's always been the "raw" one of the group, someone who didn't quite fit the polished leading-man mold Alec and Billy occupied.
William "Billy" Baldwin (The Heartthrob)
Born in 1963, Billy—or William, if you’re being formal—was the quintessential 90s hunk. Backdraft, Sliver, The Squid and the Whale—he had a run that was honestly incredible. He married Chynna Phillips from Wilson Phillips, making them a sort of 90s royalty power couple.
Stephen Baldwin (The Youngest)
The baby of the bunch, born in 1966. Stephen had that breakout moment in The Usual Suspects and then took a hard pivot into faith-based media and conservative activism. He's also Hailey Bieber’s dad, which basically makes him the bridge to the newest generation of "nepo-baby" fame.
The Sisters You Probably Didn't Know About
This is where the trivia usually trips people up. Alec has two sisters who largely stayed out of the Hollywood meat grinder.
Elizabeth Keuchler is the eldest of all six Baldwin children. Born in 1955, she’s three years older than Alec. While her brothers were busy on film sets, Elizabeth was reportedly involved in the family’s philanthropic efforts, specifically the Carol M. Baldwin Breast Cancer Research Fund.
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Then there’s Jane Sasso. She was born in 1965, sliding into the birth order between Billy and Stephen. Jane has kept a remarkably low profile compared to her brothers. She lives a relatively "normal" life, which, considering the level of fame her brothers reached, is probably a full-time job in itself.
The Baldwin Birth Order
- Elizabeth Baldwin Keuchler (Born 1955)
- Alec Baldwin (Born 1958)
- Daniel Baldwin (Born 1960)
- William Baldwin (Born 1963)
- Jane Baldwin Sasso (Born 1965)
- Stephen Baldwin (Born 1966)
Growing Up in Massapequa: Was It Like a Movie?
Not really. Alec has been pretty open about the fact that their childhood wasn't exactly a glamorous suburban dream. His father, Alexander Jr., was a high school history teacher and a football coach. He was a man who worked hard but, according to Alec’s memoir Nevertheless, the family was "lower middle class" and often struggled to keep the lights on.
Imagine eight people in a small ranch-style house.
Six kids, two parents, one bathroom (usually). It was a house overstuffed with personalities. Alec once described the environment as a pressure cooker of sorts. You had to be loud to be heard. You had to be fast to get the last bit of food. That competitive, performance-heavy energy probably explains why four out of the six kids ended up in front of a camera.
The Matriarch: Carol Baldwin’s Legacy
You can’t talk about the Baldwin siblings without mentioning their mother, Carol. She was the glue. After surviving breast cancer in the early 90s, she became a powerhouse in the research community.
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She passed away in 2022 at the age of 92, and all six of her children—Alec, Daniel, Billy, Stephen, Beth, and Jane—were there to honor her. It’s one of those rare moments where the family, despite their varying political views (Stephen and Alec famously don't see eye-to-eye on... well, anything), came together.
Why the "Baldwin Brothers" Became a Slang Term
Back in 1995, the movie Clueless actually used the word "Baldwin" as slang for a hot guy. That’s the level of cultural saturation we're talking about. People didn't just know how many siblings Alec Baldwin had; they viewed the family as a biological factory for leading men.
It’s interesting to see how that’s shifted. Today, younger fans might know the family through Hailey Bieber or Ireland Baldwin. The "Baldwin" name has transitioned from 90s movie stars to 2020s influencers and models.
Actionable Insights for Fans and Researchers
If you're digging into the Baldwin family history for a project or just a deep-seated curiosity, here are a few things to keep in mind:
- Check the middle names: Almost all the men share "Alexander" or "Rae" in some capacity, which can make genealogy records confusing.
- Don't ignore the sisters: If you're looking for the philanthropic side of the family, Elizabeth and Jane are often the ones behind the scenes of the family's breast cancer foundation.
- Birth years matter: The gaps are small. They were all born within an 11-year window, which explains the high-intensity sibling rivalry often cited in interviews.
Ultimately, Alec is the patriarch of the modern Baldwin era, but he’s just one piece of a much larger, more complicated New York family. Whether they are acting, protesting, or making headlines for their personal lives, the six Baldwin siblings remain one of the most resilient "dynasties" in American entertainment.
If you want to understand the full scope of their impact, look at the Carol M. Baldwin Breast Cancer Research Fund. It’s the one place where all six siblings' names consistently appear together, proving that beneath the Hollywood drama, they’re still just those kids from Long Island.