Forumla to count the number that fall betwee 13-25 in a column

[Linda]

I have a formula to count the children ages by month but now i need to know
how many children are between certain age group. I want to put the age in
group between o-12 , 13-24 and 25-36. I want to put it at the end of the
formula for calculating the children age.

 

[Gary''s Student]

Do you mean 13-24 months old
or
13-24 years old?

 

[Teethless mama]

0 - 12 months:
=SUM(COUNTIF(A:A,{">=0",">12"})*{1,-1})

13 - 24 months
=SUM(COUNTIF(A:A,{">=13",">24"})*{1,-1})