Hard to say how many family members I have who are alive. Both my mom and dad came from large family, and I have 7 brothers and a sister. We aren't very close (emotionally or geographically). I have loads and loads of nieces, nephews, and cousins I've never met.
But my dad was raised Mormon (it didn't "take" in him ), so his side of the family is really into genealogy. They have the family traced back hundreds of years, to the 12th century! But I don't know how reliable the information is. (In fact I strongly suspect it's bogus but so it goes.)