Narrowing down your audience is an important step in your Facebook advertising funnel. Here's how to define target audiences based on their country, city or language they use on Facebook.
When you create a post in the Publish section, you can target or limit your post to a very specific audience. You can define the audience for your Facebook post based on their demographics or location. For example, you can choose to have your post seen only by men or women within a specific age range, country, city or language. You can also target people with specific interests.
When posting a status, link or photo on your page, click Limit audience or Target audience.
Select who should be able to see this post.
Target audiences by their interests.