Lets see here. The main family in the comic has: 11 people (Though they don't get equal attention), there one main antagonist, 12 currently un-named characters , and 6 others that show up very briefly/ have minor roles. theres technically others but those are only names for the sake of family trees and never actually appear. so in short 30 characters that actually appear
for a full list of named characters I've made a post of the Family trees on Tapas:
its a great way to tease viewers about future events and to keep my own head straight about everyone's relationships
If this interests you at all why not check out the main comic TLC?: