Mary Martha Cosby, better known as Mary Cosby, is an American television star, entrepreneur, and church leader. She gained worldwide fame after joining the Bravo reality series The Real Housewives of Salt Lake City (RHOSLC).
Born and raised in Utah, United States, Mary is one of the most talked-about figures in reality TV because of her extravagant lifestyle and complex family background. Her story combines religion, wealth, controversy, and television fame — making her one of the standout personalities in the Real Housewives franchise.
Before becoming a reality star, Mary Cosby was already well-known in her local community as the First Lady of the Faith Temple Pentecostal Church, an influential church founded by her grandmother, Dr. Rosemary “Mama” Cosby. She inherited several of her grandmother’s businesses and properties, which later became key to her financial success and helped shape mary cosby net worth.
Mary Cosby Biography Table
| Attribute | Details |
| Full Name | Mary Martha Cosby (née Harris) |
| Date of Birth | October 17, 1972 |
| Age (2025) | 52 years old |
| Place of Birth | Utah, United States |
| Nationality | American |
| Height | 5 ft 4 in (163 cm) |
| Weight | Not publicly confirmed |
| Religion | Christianity |
| Occupation | Television Personality, Businesswoman, Church Leader |
| Known For | The Real Housewives of Salt Lake City |
| Estimated Net Worth | $5 million |
| Spouse | Robert Cosby Sr. (married 1998) |
| Children | One son, Robert Cosby Jr. |
| Grandmother | Dr. Rosemary “Mama” Cosby |
| Residence | Salt Lake City, Utah |
| Education | Attended schools in Utah |
| @mary_m_cosby | |
| Church Role | First Lady of Faith Temple Pentecostal Church |
| Years Active (TV) | 2020–present |
| Primary Income Sources | TV salary, inheritance, real estate, business ventures |
What is Mary Cosby Net Worth?
The question “What is Mary Cosby net worth?” is one of the most frequently asked about her. According to multiple entertainment sources, mary cosby net worth is estimated to be around $5 million as of 2025.
Her income and assets come from several key sources:
- Inheritance:
Mary inherited a church, multiple commercial properties, and businesses, including restaurants, a printing company, and a daycare center from her grandmother, Rosemary Cosby.
- Television Career:
Her salary from The Real Housewives of Salt Lake City significantly contributes to her earnings. Reports suggest that she earns thousands per episode, along with bonuses from brand collaborations and public appearances.
- Business Ventures:
In addition to church leadership, Mary is involved in small business ventures such as fashion and perfume lines, which boost mary cosby net worth.
- Real Estate Investments:
Mary Cosby owns properties across several states, including Utah, Las Vegas, and New York.
- Brand Influence:
As a public figure, she occasionally collaborates with lifestyle brands and attends paid events, further increasing her income.
Although mary cosby net worth is widely quoted as $5 million, it is important to note that this figure is an estimate based on public records, media reports, and expert analyses. Her real wealth could be higher when including private investments, business profits, and personal assets.
Why is Mary Cosby Famous?
Mary Cosby’s fame began with her appearance on The Real Housewives of Salt Lake City, which premiered in 2020. She stood out because of her unique story — being married to her step-grandfather, Bishop Robert Cosby Sr., and inheriting a multimillion-dollar church and business empire from her late grandmother.
Her distinct personality, unfiltered opinions, luxurious clothing, and lavish home drew attention from both fans and critics. Many viewers were fascinated by her mysterious life, her role in the church, and her extravagant fashion sense.
Mary also became known for her strong presence on social media, where she often shares glimpses of her personal and professional life. Over the years, she has built a devoted fan base and become one of the most recognizable faces in the Real Housewives series.
What is Mary Cosby Age?
Mary Cosby was born on October 17, 1972, in Utah, USA, making her 52 years old as of 2025.
She remains youthful, maintaining her style and energy, which her fans often notice on social media and television. Her birthday is sometimes listed as October 21, but most reliable sources confirm October 17.
Mary Cosby Biography
Early Life
Mary Cosby was born Mary Martha Harris and grew up surrounded by faith and business success. Her grandmother, Dr. Rosemary Cosby, was a respected pastor and entrepreneur who built a strong community around the Faith Temple Pentecostal Church.
Growing up, Mary learned leadership, responsibility, and business management through her family’s church and business ventures. Her early environment influenced her confidence and public presence, traits that later shaped her success and mary cosby net worth.
Education
Mary attended schools in Utah and reportedly pursued higher education, although specific university details remain private. She is well-spoken and confident, reflecting a strong educational foundation.
Her focus, however, leaned more toward leadership and ministry training, as she took on increasing roles within her family’s church organization after her grandmother’s death.
Family
Mary’s family background is one of the most discussed aspects of her life.
- Grandmother: Dr. Rosemary “Mama” Cosby, a trailblazer who built the Faith Temple Pentecostal Church.
- Husband: Robert Cosby Sr., whom she married in 1998, following her grandmother’s wish that Mary keep the family leadership within the church.
- Child: One son, Robert Cosby Jr., born around 2005.
- Residence: She currently resides in Salt Lake City, Utah, though she also owns other properties in the U.S.
Her family life has often been featured on The Real Housewives of Salt Lake City, where she openly discusses her marriage, motherhood, and spiritual responsibilities.
Personal Life
Mary Cosby’s marriage to Robert Cosby Sr. drew widespread media attention because of its unusual nature he was once married to her late grandmother. While many fans found it controversial, Mary has said that she deeply loves her husband and respects her grandmother’s wishes.
Their relationship, while complex, has lasted for over two decades and remains one of the most unique stories in reality TV. Together, they manage the church and other family businesses.
Mary Cosby balances her life between church responsibilities, family, and the entertainment industry. Despite controversy, she maintains that faith and family are her priorities.
Lifestyle
Mary Cosby is known for her bold fashion sense, luxury brands, and extravagant home decor. Her wardrobe includes high-end designer clothing, shoes, and handbags — many of which she showcases on The Real Housewives of Salt Lake City.
Her luxurious home in Utah reflects her refined taste, featuring chandeliers, expensive artwork, and elegant furniture. Fans often describe her lifestyle as “eccentric” yet fascinating.
Her love for fashion aligns with her confident personality and has become a symbol of her success and mary cosby net worth.
Mary Cosby Height and Weight
Mary Cosby stands approximately 5 feet 4 inches (163 cm) tall. Her weight is not officially confirmed, but she maintains a slim and elegant figure, which complements her stylish wardrobe. She often shares photos wearing designer outfits that showcase her grace and confidence.
Mary Cosby Media Presence
Mary Cosby maintains a strong presence in the media and online.
- Television: She has appeared on The Real Housewives of Salt Lake City since 2020.
- Social Media: Her Instagram handle is @mary_m_cosby, where she shares updates about her life, church, and events.
- Interviews: Mary often appears in interviews discussing faith, fame, and fashion.
Her blend of humor, directness, and authenticity makes her both controversial and admired. Many fans believe her honesty adds to her appeal, while critics see her as unpredictable — either way, she remains a central figure in entertainment discussions.
Frequently Asked Questions
What is Mary Cosby net worth?
Mary Cosby’s net worth is estimated at $5 million as of 2025, combining her inheritance, real estate, and TV earnings.
How did Mary Cosby earn her money?
She inherited businesses and church properties from her grandmother and earns from her role on RHOSLC.
Who is Mary Cosby’s husband?
Her husband is Robert Cosby Sr., and they have been married since 1998.
How old is Mary Cosby?
She was born in 1972 and is currently 52 years old.
What is Mary Cosby’s profession?
She is a TV star, businesswoman, and church leader.
Conclusion
To sum up, mary cosby net worth reflects a life filled with faith, family, and fame. Her estimated wealth of $5 million comes from inherited businesses, her church leadership role, real estate, and television earnings.
Despite controversies surrounding her marriage and personality, Mary Cosby remains an iconic figure in American pop culture. Her journey from a church First Lady to a reality TV star shows her ability to balance spiritual duty with media influence.
At 52 years old, Mary Cosby continues to live luxuriously while inspiring conversations about faith, fame, and fortune. Her charisma, honesty, and unique life story ensure that the name Mary Cosby will remain a topic of interest for years to come.
Whether you admire her style, question her choices, or simply enjoy her presence on The Real Housewives of Salt Lake City, one thing is certain — mary cosby net worth is a symbol of resilience, legacy, and determination.
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