求问！申请信用卡的年龄限制？

阿健健健健

本人前后申请过两次信用卡，而且卡的类型都是很基本的信用卡。
但是都被拒了。
后来上网找客服，几家银行的客服都告诉我必须要超过21岁才可以，因为这是条件之一。
我无语了，难道我还要再等大半年才可以吗？
有没有比较了解的大仙解释一下？

猫仔maozai

You must be at least 18 years of age to apply for credit in the US. However, you must have a co-signer and/or proof of adequate income. To independently get a credit card you must be 21.

http://wiki.answers.com/Q/What_is_legal_age_for_credit_card_in_US