What House Does Mercury Rule
In traditional astrology, Mercury rules the third house and the sixth house. The third house governs communication, short trips, siblings, and immediate surroundings. The sixth house relates to daily routines, work, health habits, and service.
Why Mercury Rules These Houses
Mercury is associated with intellect, language, and analytical thinking. The third house reflects how people exchange information, learn basics, and interact locally. The sixth house shows how they apply that energy to structured tasks, problem-solving, and maintaining everyday systems.
How This Affects Chart Interpretation
When analyzing a birth chart, planets in the third or sixth house often express Mercury-like themes. A strong Mercury placement can emphasize curiosity, detail-oriented work, and clear expression. For deeper context on house rulership, see this overview of astrological houses astrological house systems.
