I tell my mom about it. She's very supportive and, although she doesn't read it because her English isn't very good, she still encourages me to keep going and listens to my endless rants when I'm stuck on the story, the art or whatever, lol. My grandmother also knows about it. Again, she doesn't read it because English + Internet, but she's seen me drawing comics ever since I was a kid, so it's not much of a surprise to her, lol.
Haven't told my dad or the rest of my family about it, and I have no intention to. My dad simply doesn't know how to provide constructive criticism and would probably just make me lose any will to draw (he only got to see ONE page of the comic by accident and his comment was something along the lines "oh, so you're drawing houses like a six years old kid, now?") and the rest of the family just doesn't care about comics and/or is too bigoted to understand. Even if they had the English knowledge required to read the comic, a good half of them would probably chase me with Bibles, rosaries and holy water as soon as they stumbled upon words such as "demons", "magic", "witches" and "gays", so nope, thank you. My aunt already freaked out once when she casually heard me saying "possessed" while talking to my cousin (who's the only open-minded person of the family) about one of my OCs, so you can imagine how she would react if she were to read the whole thing, lol XD
I did tell people of my former gaming community + RPG partners, however. Some of them even follow the comic here or on CF