The question is asking how many people there are in your family. As a result, the exact answer is dependent on the size of your family. However, the structure is as follows:
Il y a [number] de personnes dans ma famille.
This means "How many people are in your family?", so it would be a number.
There is 4 persons in my family
"j'ai quatre personnes dans ma famille" (but "nous sommes quatre [personnes] dans la famille" or "nous sommes une famille de quatre personnes" are better)
"il y a six personnes dans ma famille" "nous sommes six dans la famille" "nous sommes une famille de six personnes" "ma famille comprend six personnes"
mon cinq (sank) amis (ah me) - fernectically spelt!
six personnes dans ma famille.
Jai six personnes dans ma famille
"J'ai cinq personnes dans ma famille"
I have 4 children is translated "j'ai quatre enfants" in French.
personnes are 'people' in French.
"combien de personnes vivent en France ?" "quelle est la population de la France ?"
how much is 'combien' in French. Depending on what you have after we say combien? or combien de... How much money? Combien d'argent?
How many people currently live on Earth is an English equivalent of 'Combien de personnes habitent actuellement sur terre'. The adverb 'combien' means 'how many, how much'. The preposition 'de' means 'of'. The feminine noun 'personnes' means 'people, persons'. The verb 'habitent' means '[they] are living, do live, live'. The adverb 'actuellement' means 'at the moment, currently'. The preposition 'sur' means 'on'. The feminine noun 'terre' means 'land, earth'. All together, they're pronounced 'kohm-byah duh pehr-sohn-zah-beet syoor tehr'.
combien means how much / how many in French.