The Eleventh House is the house of community, friendship, and the hopes and dreams that connect you to the future. It describes your social circle, your relationship with groups and organizations, and the collective vision that inspires you.
In traditional astrology, the Eleventh House is called the House of Friends (or Good Spirit). It describes the quality of your friendships, your relationship with groups and communities, and the nature of your hopes and aspirations.
A planet in the Eleventh House describes how you approach friendship and community. Venus in the Eleventh House gives charm and sociability, making friendships easy and pleasant. Mars in the Eleventh House gives an assertive, energetic approach to group activities, often taking a leadership role in social causes. Saturn in the Eleventh House may indicate difficulty with friendships, or a tendency to take friendships too seriously.
The Eleventh House is naturally associated with Aquarius and Saturn (or Uranus): the sign of the collective and the planet of structure (or revolution). When planets are placed in the Eleventh House, they take on something of this Aquarian quality, becoming more idealistic, more community-oriented, more focused on the future.