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Mary Julia Koch Facts: Bio, Age, Height, Weight, Family, and Net Worth

Last Updated on February 28, 2025: By Josphat Gachie

Mary Julia Koch Biography

Mary Julia Koch is an American reporter and celebrity daughter. She is widely known as the daughter of the renowned philanthropists and founders of Koch Industries, David Koch and Julia Margaret Flesher. She has two brothers named John Mark Koch and David Koch Jr.

Koch currently works as a reporter at The New York Sun, where she covers issues of higher education and foreign policy.

10 Quick Facts About Mary Julia Koch

Here is a list of 10 facts about Koch


  • Name: Mary Julia Koch
  • Age: 30 Years Old.
  • Birthday: April 12
  • Zodiac Sign: Aries
  • Height: Average
  • Nationality: American
  • Occupation: Staff Reporter
  • Marital Status: Single
  • Salary: Under Review
  • Net Worth: Not Available

Mary Julia Koch Age

Mary is 30 years old, she was born on April 12, 1995, in New York City, New York, United States. She celebrates her birthday on April 12 every year and her birth sign is Aries.

Mary Julia Koch Height

Mary Julia Koch stands at an average height. She appears to be quite tall if her photos, relative to her surroundings, are anything to go by. However, details regarding her actual height and other body measurements are currently not publicly available. We will update this section when the information is available.

Mary Julia Koch Weight

Koch has a moderate weight. However, details regarding her actual weight and other body measurements are not publicly available. We will update this section when the information is available.

Early Life and Education

Koch was born on April 12, 1995, in New York City, New York, United States to Julia Koch and David Koch. Her parents are the late founders of Koch Industries, one of the largest privately held companies in the world.

Koch went to Phillips Academy High School in Andover, Massachusetts. She later attended Harvard College, and graduated with the highest honors in history in 2023. While at Harvard, Koch was the editor-in-chief of an independent student newspaper, ‘The Harvard Independent’.

Rise to Fame

After graduating from the University of Central Arkansas, Koch repositioned to New York, and landed a job as an aide to fashion designer Adolfo, where she worked with many of his high-profile customers, including retired US first lady Nancy Reagan.

Mary Julia Koch Family, Parents

Mary was born and raised in New York City, New York, United States as the first daughter of her mother Julia Koch and her American billionaire father David Koch. Her father was an American chemical engineer, businessman, philanthropist, as well as a political activist. He entered the family business Koch Industries, the second-largest privately held firm in the United States, in 1970.

David became president of the subsidiary Koch Engineering in the year 1979, and in 1983 became a co-owner of Koch Industries, with his older brother Charles Koch. He worked as an executive vice president until his retirement in the year 2018. In June 2018, David received the title of Director Emeritus after his retirement due to health issues.

Mary Julia Koch’s Father’s Death

David passed away at his home in Southampton, New York, on August 23, 2019, at the age of 79. David’s wife, Julia Koch, and their three children inherited a 42% stake in Koch Industries from David upon his death.

Mary Julia Koch Siblings

Koch has two sibling brothers John Mark Koch and David Koch Jr.

Mary Julia Koch Boyfriend

Koch is proally single. She has not gone public with her relationship, it is not publicly known whether she is married or in a relationship. Her partner’s information will be updated as soon as the information is available.

Mary Julia Koch Children

Any information about Koch’s children is currently not publicly available. We will update this section as soon as the information is available.

Mary Julia Koch Net Worth

Mary net worth is publicly not available. Her mother Julia Koch has an estimated net worth of $56.9 billion dollars. This includes her assets, money, and income.Julia inherited her net worth as the widow of billionaire tycoon David Koch. Through her various sources of income, Julia has been able to accumulate a good fortune but prefers to lead a modest lifestyle.

Facts: Everything You Need to Know About Mary Julia Koch

Here are some interesting facts and body measurements you should know about Mary.

Mary Koch Photo
Mary Koch Photo

Mary Julia Koch Bio.

  • Full Names: Mary Julia Koch
  • Popular As: Julia Koch’s daughter
  • Gender: Female
  • Occupation / Profession: Staff Reporter
  • Nationality: American
  • Race / Ethnicity: White
  • Religion: Not Available
  • Sexual Orientation: Straight

Birthday

  • Age: 30 Years Old.
  • Zodiac Sign: Aries
  • Date of Birth: April 12, 1995
  • Place of Birth: New York City, New York,  United States
  • Birthday: April 12

Body Measurements

  • Body Measurements: Not Available
  • Height / How Tall?: Average
  • Weight: Moderate
  • Eye Color: Dark Brown
  • Hair Color: Blonde
  • Shoe Size: Not Available
  • Dress Size: Not Available
  • Chest Size: Not Available
  • Waist Size: Not Available
  • Hip Size: Not Available

Family and Relationship

  • Father (Dad): David Koch
  • Mother: Julia Koch
  • Siblings (Brothers and Sisters): John Mark Koch, David Koch Jr.
  • Marital Status: Single
  • Dating / Boyfriend: Not Available
  • Children: Sons (Not Available) Daughter(s) (Not Available)

Net Worth and Salary

  • Net Worth: Not Available
  • Salary: Under Review
  • Source of Income: Staff Reporter and Celebrity Daughter

Mary Julia Koch The Koch Brothers

The Koch family is an American family engaged in business, most noted for their political activities (donating to libertarian, criminal justice reform, and Republican Party causes) control of Koch Industries. It is the second-largest privately owned company in the United States (with 2017 revenues of $100 billion).

The family business was formed by Fred C. Koch, who developed a new cracking method for the refinement of heavy crude oil into gasoline. Fred’s four sons sued against each other over their interests in the business during the 1980s and 1990s.

David H. Koch and Charles G. Koch, today typically referred to as the Koch brothers; and the only two of Fred Koch’s four sons still with Koch Industries are affiliated with the Koch family foundations. The two brothers have built a political network of conservative donors and the brothers conduct financial revenue into television as well as multi-media advertising.

Contacts

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About InformationCradle Editorial Staff

This Article is produced by InformationCradle Editorial Staff which is a team of expert writers and editors led by Josphat Gachie and trusted by millions of readers worldwide.

We endeavor to keep our content True, Accurate, Correct, Original and Up to Date. For complain, correction or an update, please send us an email to informationcradle@gmail.com. We promise to take corrective measures to the best of our abilities.

Filed Under: Celebrities, Reporters

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