Facebook User and Facebook ID

Facebook User is person who use Facebook. Every user have Username and Facebook ID. If someone block you or they deactivate their account, they name become had become Facebook UserFacebook Users is a concept often used by analysts demographic.

Username and user ID is part of your public profile, which helps your friends find you on Facebook.

What are you Username?

facebook username

Your username is often a variation of your name like tommy33 or tom1993. You can create your own username, or choose a username that Facebook suggests. Here are some of the things username do:
Username create a custom link (ex: to your profile that you can share with your friends or post on external websites.
Username can also be used to access information about you through Facebook. Example, if your username is tom1993, someone can go to to see your profile and any public information. Learn how to create a username for your profile.

What is Facebook ID?

facebook user id

If you don't create a username, you'll still have a User ID. A User ID is a string of numbers that doesn't personally identify you but does connect to your Facebook account. For example, 100010633215100 or 100010838851088. Here are some of the things User ID do:

Like username, if someone has your user ID, they can use it to see your profile and any public information.
Your user ID also helps applications personalize your experience by connecting with your Facebook account. When you allow apps to connect with your Facebook account, they can use your user ID to see things like your public profile and your friend list.
If you have a problem with an app or a game, sharing your user ID with the developer may help them better address your question or concern.
Learn how to find your user ID.