The Biggest Facebook Groups by Member Count
The biggest Facebook groups we know of, ranked by member count. They cover relationships and faith, cooking, makeup, English learning, wrestling and more. Most of the very largest are public, so you can read posts before you join.
This list has 68 groups. 33 are public and 35 are private (you’ll need to be approved). The largest is MARRIAGE & RELATIONSHIP COUNSELING (MRC) with about 7,661,241 members.
Member counts were recorded in July 2025 and are shown as a size guide; current numbers may differ.