Age Investigation: How Old Are the This Is Us Characters and Actors?

Moore's Age: 33

Rebecca's Age: In an interview with E! Online, makeup artist Zoë Hay said Moore's old-age makeup is meant to represent Rebecca "in her mid-60s." If we put her right at 65, that means Rebecca's around 29 or 30 when the kids come into the picture.

Ventimiglia's Age: 40

Jack's Age: Jack's age is made pretty clear in the pilot. The reason the Big 3's 36th birthday is so important is because that's how old their dad was when they were born. So Jack is 36 in the first episode, and you can do the math from there.

Hartley's Age: Believe it or not, Hartley is 40 years old.

Kevin's Age: As we said previously, Kevin, Kate, and Randall are all 36 at the beginning of the show.

Metz's Age: 36

Kate's Age: She's 36! Right on the nose!

Brown's Age: 41

Randall's Age: 36, just like his siblings

Jones's Age: 60

William's Age: We learn through flashback that William was born sometime in the early 1940s. That means he was in his late 30s when he gave up Randall, and he is probably in his mid to late 70s when he dies in the present-day narrative.