That depends on what ID card you have.
5
Credit card ID numbers have three (Discover, Visa, MasterCard) or four (American Express) digits.
there are nine digits in a tax id number
California inmate ID numbers contain six digits.
Nine
it has ten
16
there are 6
16
10 Digits in the form of XXX XXX XXXX
12
Sixteen.
I do not have a national id.