Popsugar Entertainment On My Block How Old Are the Actors in On My Block? How Old Is the Cast of On My Block? An Age Investigation 2 April 2019 by Amanda Prahl View On One Page Photo 1 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Sierra Capri, aka Monse: 20 Previous Next Start Slideshow On My BlockTV