When you create a Coinbase account, you automatically generate a bitcoin wallet address. This is the address that you use to receive and send bitcoins.
You can find your wallet address by clicking on the “Tools” link on the left sidebar and then clicking “Edit Address Book.” Your wallet address is the long string of numbers and letters that appears next to your name.
If you want to use a different bitcoin wallet address, you can do so by clicking on the “Settings” link on the left sidebar and then clicking “Addresses.” From there, you can add a new bitcoin wallet address.
Your Coinbase wallet address will not change unless you delete your account and create a new one. Even if you delete your Coinbase account, your bitcoin wallet address will still be active.