Membership (noun)

1. The state of being a member of a group, organization, or club.
2. The fact or condition of being a member of a particular group or organization.

Origin:

Mid 17th century: from member + -ship.

Examples:

1. He applied for membership in the club.
2. She renewed her membership in the organization.
3. The membership fee is $50 per year.
4. Membership has its privileges.
5. The membership has grown since the new facilities were built.