A Lookalike Audience is a way to reach new people who are likely to be interested in your business because they're similar to your best existing customers.

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Context

When you create a Lookalike Audience, you choose a source audience (a Custom Audience created with your pixel data, your mobile app data or fans of your Page) and we identify the common qualities of the people in it (ex: demographic information or interests). Then we find people who are similar to (or "look like") them.

You can choose the size of a Lookalike Audience during the creation process. Smaller audiences more closely match your source audience. Creating a larger audience increases your potential reach, but reduces the level of similarity between the Lookalike Audience and source audience. We generally recommend a source audience with between 1,000 to 50,000 people. Source quality matters too. For example, if a source audience is made up of your best customers rather than all your customers, that could lead to better results.

Additional information:

Here are some additional bits of information to consider when creating Lookalike Audiences.

• Your Lookalike Audience will only include people from the country/countries you select during creation.
• Your source audience must contain at least 100 people from a single country in order for us to use it as the basis for a Lookalike Audience.
• You can create up to 500 Lookalike Audiences from a single source audience.
• People in your source audience will be excluded from your Lookalike Audience unless you use a pixel as your source audience.
• You can use multiple Lookalike Audiences at the same time for a single ad set. The ad set will target your ads to people who are in any of the selected Lookalike Audiences.

Learn how to create Lookalike Audiences.

Want to Learn More About the Audiences You Can Target on Facebook?

Check out this quickstart guide to creating lookalike and custom audiences.

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