Is there a way to figure out when an address is created? I'm doing some bitcoin address collections. If there are some meaningful letters in the address or if the address is created in a meaningful time to me, I will buy it. 

How can I know when the address is created?
Addresses are not created, per se. They're simply a representation of a public key. So, you cannot know when an address is "created."

However, it is possible to know the first time an address is used.