The eleventh house in astrology is a succedent house, being the second house from the angle of the midheaven (10th house cusp). If you’ll remember the other succedent houses – the 2nd, 5th, and 8th – are the houses that are second from their respective angles and commonly refer to the wealth, values, and allies of their angular houses.
Therefore the 11th house can represent our colleagues, guilds, and professional associations since these are our “allies,” as they relate to the 10th house (our career). In typical modern astrology this house is given to “friends,” but we can see that means other people who share, or reflect, our own values. Traditionally the 10th house represented the king, so the 11th represented his associates. It’s now considered a very fortunate house.
Another modern association of the 11th house is with “hopes and wishes.” I believe this is derived from the position of the 11th house in the sky- that is, this is the area of the sky the sun is in from roughly 10 a.m. to noon. Therefore, those planets that occupy this segment of the sky will soon be directly overhead and at their highest. It’s like planets here “aspire” to be at the top of the chart.
In horary astrology the 11th house represents friends, money gained from business, and wishes the querant would like to know about but doesn’t want to reveal (e.g. “Will my wish come true?”).
In mundane astrology the 11th house represents the house of representatives, or the house of commons; hopes of the nation; and programs for improvements (i.e. infrastructure improvements, etc.)
In medical astrology the 11th house represents the legs and the ankles.
The planet Jupiter finds its joy in the 11th house.