Viral reach is the number of people who had any content from your page enter their screen after it was shared, liked, or commented by a friend (that follows your page). So this metric can include fans and non-fans of your page.
Paid reach is the number of people who had a paid post from your Page enter their screen. Organic reach is the number of people who had an unpaid post from your Page enter their screen. Organic reach can be broken down into viral and nonviral:
- Viral: The number of people who had any content from your Page or about your Page enter their screen because their friend likes or follows your Page, engages with a post, shares a photo of your Page and checks into your Page.
- Nonviral: The number of people who had any content from your Page enter their screen. This doesn’t include when someone’s friend likes or follows your Page, engages with a post, shares a photo of your Page and checks into your Page.