What is the legal age in Florida to open checking account?

If you want to open an individual account then you must be atleast 18 years old. But, if you are a minor (less than 18 yrs.) you can always open a joint account with any of your adult family members like mother, father, elder brother etc. banks do not say no to any customer who wishes to open a bank account (Unless they have a valid reason because the customer is bankrupt or has criminal record etc.)