The word "familia" has four syllables: fa-mi-li-a.
This is according to the rules of syllable division, which is based on the pronunciation of words.
Here's a breakdown of the syllable division for "familia":
"A syllable usually consists of a vowel sound or a diphthong, sometimes with a consonantal sound attached to it, that forms a single unit of sound in a word." - Merriam-Webster Dictionary
It's worth noting that syllable division can sometimes be subjective, and different people may pronounce words slightly differently.