The completed figure is about 4 3/4 inches or 12 cm tall. The widest part of the head is 24 stitches around. I don't know a lot about yarn and yarn weights, it's a sport weight yarn and I'm using a 3.25mm crochet hook. Here's the info block from the yarn label:

Thanks for that @danmaruschak. I think that's about a DK (Double Knitting) weight here.