Sometimes, "family" can be used as a non-count noun.
The following sentences are taken from Merriam-Webster Learner's Dictionary.
(1) He spent a quiet evening at home with family.
(2) She was surrounded by friends and family.
(3) He has family in California.
(4) They treat their guests like family.
(5) You're always welcome here because you're family.
Now, I have inserted these boldfaced words to make "family" a count noun as follows:
(1') He spent a quiet evening at home with his family.
(2') She was surrounded by her friends and family.
(3') He has his family in California.
(4') They treat their guests like their family.
(5') You're always welcome here because you're my family.
Please let me know if any of the latter group of examples is awkward.
The following sentences are taken from Merriam-Webster Learner's Dictionary.
(1) He spent a quiet evening at home with family.
(2) She was surrounded by friends and family.
(3) He has family in California.
(4) They treat their guests like family.
(5) You're always welcome here because you're family.
Now, I have inserted these boldfaced words to make "family" a count noun as follows:
(1') He spent a quiet evening at home with his family.
(2') She was surrounded by her friends and family.
(3') He has his family in California.
(4') They treat their guests like their family.
(5') You're always welcome here because you're my family.
Please let me know if any of the latter group of examples is awkward.