What Mercury in Aries/the 1st House Reveals about Your Chart

All about Mercury in Aries or in the 1st House

Mercury is the ruler of information, communication and our intellectual processes. Whatever sign and house Mercury was occupying at your time of birth influences the topics you love buzzing about and how you are most likely to articulate ideas. This may be an area of life where you easily speak up or have strong opinions. Where do you feel most comfortable socializing or with who? Interactivity is Mercury’s domain, showing the types of friends to which you gravitate.

How Mercury influences your chart

Natal Mercury or Mercury sign

Whatever zodiac sign and house Mercury was orbiting through at your time of birth determines your “natal Mercury” or “Mercury sign.” More specifically, this will guide you in the following ways:

  • Communication: What’s your conversational style? How do you articulate thoughts?
  • Mobility: Plane, train or automobile—how do you like to get around?
  • Systems: How do you organize data and stay on top of the moving parts?
  • Thought processes: How do you process ideas and make decisions?
  • Social life: What sorts of people do you easily click with?
  • Hobbies: What do you enjoy doing in your extracurricular time?

Mercury is one of the inner planets, along with Venus and Mars. Because of its close proximity to the Sun, it zips through all twelve zodiac signs in 88 days, spending an average of three weeks in each one.

What’s your Mercury sign? 

Use our cosmic calculator to discover what zodiac sign and house Mercury was in when you were born. To accurately determine the house, you will need to know your birth time.

What if the zodiac sign and house are different?

This is common! Read both the sign and house description below. Do these interpretations pull you in two different directions? That’s not unusual. We human beings have range. Astrology is an interpretive dance, a tool which provides a fascinating layer of self-discovery. Do some “astro mixology.” Reflect on how you can work with both energies to enhance your life.

Find your Mercury Sign

Calculate Yours!

Special positions of Mercury


Mercury turns retrograde 3-4 times every year for a span of three weeks each time, so it’s not unusual to be born with this planet in reverse. You may have to work harder to muscle through its lessons, but once you nail this planet’s energy, your additional effort may actually lead to a rock-solid mastery of working with Mercury in your life. 

Domicile: Gemini  

The planet’s home base, an easy flow if placed here in the chart 

Detriment: Sagittarius  

Opposite sign of home base, may need to work harder to integrate the planet’s energy if placed here in the chart

Exalted: Virgo 

The planet’s most powerful position; indicates ease and added fortune with using the planet’s energy if placed here in the chart

Fall: Pisces 

Opposite sign to the exalted position, can indicate struggles with utilizing the planet’s energy if placed here in the chart

Mercury in Aries or the 1st House 

If you were born with Mercury in Aries or the 1st house, you thrive on dopamine-driven challenges and are always having “a-ha” moments. You tend to act on the fly and speak without thinking—but with all that charisma, you own the room!

Traits of Mercury in Aries

Gifted at providing a true “be here now” presence, Mercury in Aries means you are easily able to live in the moment—you don’t dwell on the past or drown in nostalgic sentimentality. An independent thinker, “Don’t tell me what to do!” is your battle cry. You’re fearless when it comes to expressing your opinions, no matter how unpopular.  

As Aries begins the zodiac and the 1st house is your entry to self, you like to be first—and the best—as often as possible. You enjoy trends and exploring the new…but with your flickering attention span, you can lose interest just as quickly. Watch that fervor though! You have a tendency to interrupt or talk over people, and in your zeal, you can dominate conversations.

Sometimes, it sounds like you’re bragging or being egotistical with Mercury in Aries, but you just love pulling off the impossible and proving the haters wrong! You process information best in quick bite-sized bullet points and share your wealth of knowledge with the promise of excitement and adventure (“OMG! You have to hear about this new idea!”).

To channel your fiery mercurial ways, turn your projects and goals into challenges. This will stoke your competitive nature and keep you interested. When teaming up, reserve the right to do part of a project “my way” and take ownership of your creations. Work in short sprints with a clear win when you complete a task. 


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Identical twin sisters Ophira and Tali Edut, known as The AstroTwins, are the founders of Astrostyle.com and the authors of multiple bestselling astrology books. Their horoscopes reach millions here and through their resident astrologer column at ELLE Magazine.