Popsugar Entertainment This Is Us How Old Is the Cast of This Is Us? Age Investigation: How Old Are the This Is Us Characters and Actors? November 21, 2017 by Ryan Roschke View On One Page Photo 4 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Kate Pearson (Chrissy Metz) Metz's Age: 36 Kate's Age: She's 36! Right on the nose! Previous Next Start Slideshow Milo VentimigliaMandy MooreThis Is UsTV