Facebook Page metrics display a combined total of organic and paid data.
Page Views
The number of times your page's profile has been viewed during the selected date range. This includes people who are logged into Facebook and those who aren't. If the same person visited your page twice, it’ll be considered as two views.
Historical data for Page views is available for up to two years.
Top Referrals
Top referring external domains sending traffic to your page during the selected date range.
Historical data for Top Referrals is available for up to two years.
Impressions
The total number of times any content from your page or about your page entered a persons screen. This includes posts, stories, check-ins, ads, social information from people who interact with your page and more.
Historical data for Impressions is available for up to two years.
Reach
The number of people who had any content from your page or about your page enter their screen. This includes posts, stories, check-ins, ads, social information from people who interact with your page and more.
The Total Reach number is available only for date ranges that are less than 93 days. Since Reach measures unique accounts, calculating Total Reach for longer timeframes by simply summing up daily Reach values would result in counting the same user more than once, and a non-unique Reach.
Historical data for Reach is available for up to two years.
Link Clicks
The number of clicks on links during the selected date range. This includes clicks across all posts on your page.
Historical data for Link Clicks is available for up to two years.
Page Actions
The number of clicks on your page's contact info and call to action button.
Historical data for Page Actions is available for up to two years.