Mary Cosby Biography
Mary Cosby is one of the cast members on The Real Housewives of Salt Lake City Season 6. She first rose to fame after appearing on the first season of The Real Housewives of Salt Lake City (RHOSLC) and has occasionally become one of the most discussed personalities on the show.
How old is Mary Cosby?
Cosby is 49 years old as of 2025; she was born in 1976 in Salt Lake City, Utah. She celebrates her birthday every year, but no one has publicly confirmed her exact birth date or month.
Quick bio/wiki
| Real Name | Mary Martha Cosby |
| Age | 49 years old as of 2025 |
| Date of Birth | 1976 |
| Place of Birth | Salt Lake City, Utah |
| Zodiac Sign | Unknown (exact birthdate not publicly confirmed) |
| Known For | First Lady of Faith Temple Pentecostal Church; cast member on RHOSLC |
Mary Cosby’s Height
Cosby has an approximate height of 5 feet and 6 inches, equal to 167.64 cm.
Mary Cosby’s Early Life and Education
Cosby was born in Salt Lake City, Utah. She is the granddaughter of the deceased Dr. Rosemary Redmon Cosby, a Pentecostal pastor who started the Faith Temple Pentecostal Church. Following the death of her grandmother, Cosby took over the church and other businesses that came with. Information about her degree or the college she went to is not publicly available at the moment.
Mary Cosby Husband and Children
Cosby was married to Robert Cosby Sr. in a relationship that continues to spark curiosity and controversy because of its unusual origin. She married her step-grandfather, Robert Sr, after her biological grandmother, Dr. Rosemary Cosby, who founded Faith Temple Pentecostal Church, died. In the will left by Rosemary, it was written that Cosby was supposed to marry Robert Sr. to continue with the religious empire. The Real Housewives of Salt Lake City have been greatly focused on their union and Cosby has been defending it as a spiritual and personal choice. Cosby and Robert Sr. have one son, Robert Cosby Jr.
TV Shows
Cosby became a national star when she first appeared on the first season of The Real Housewives of Salt Lake City (RHOSLC). She became one of the most discussed personalities on the show because of her bold personality and lavish lifestyle. In Season 6, Cosby opens her church and invites the Housewives to service and throws a champagne party at Valter.
Her dedication to her son, Robert Jr., is also part of the show as she further receives sobriety and attempts to cope with the loss of her estranged mother. Moreover, she encounters a bad moment with her relationship with Angie Katsanevas because of her sharp tongue and actions that go against the values of Cosby, making it rough and resulting in tension and confrontations. Regardless of the controversy she enjoys, such as her discontent on her church and her unusual marriage, she is nonetheless one of the main characters in the RHOSLC universe.
Mary Cosby’s Net Worth
Cosby has an estimated net worth of $1 million to $5 million, reflecting her successful career in the media industry. She earns most of her income through her family inheritance, entrepreneurial ventures, and salary from reality television.”
The Real Housewives of Salt Lake City Season 6
RHOSLC season 6 returns with a lot of packed, promising drama, camp, and hijinks as seen in the official trailer. In this new season, the ladies seem more divided than ever as some of the strongest bonds in the group are tested, with tensions between the women becoming hotter than ever. Season 6 gives a significant Bravo crossover when the Housewives flee the chill of Utah and embark on a sun cation in Greece, where they board a Below Deck Down Under charter run by Captain Jason Chambers. Their yacht adventure unfolds across both RHOSLC Season 6 and BDDU Season 4.
RHOSLC season 6 is not only creating drama in relationships and friendships, but career changes are causing ripples, too. An example is Angie, who is uncertain as she is in danger of losing her salon, Lunatic Fringe, upon a discovery. Additionally, Whitney and her husband, Justin Rose, are also trying to pick up “the pieces” in her career and “rebuilding finances after a devastating misstep in her company.” Meanwhile, RHOSLC Season 6 will also take a closer look into the changing of relationship between Lisa and John, as stated in the official announcement. Moreover, Mary Cosby opens up about her son’s post-rehab journey and navigates life after her mother’s passing as Meredith Marks plans to transform her Park City store into a caviar lounge, with help (and headaches) from husband Seth.
Season 6 begins on Tuesday, September 16, 2025, and the new episodes will be aired regularly every week at 8 p.m. ET/PT on Bravo TV. The official lineup features Whitney Rose, Lisa Barlow, Mary Cosby, Angie Katsanevas, Heather Gay, Bronwyn Newport, and Meredith Marks. Britani Bateman is coming back to RHOSLC Season 6 as a friend of the housewives, and the executive producers include Lisa Shannon, Dan Peirson, Lori Gordon, Tamara Blaich, and Andy Cohen.
Mary Cosby Social Media
Cosby frequently uses social media sites where she interacts and connects with her followers. Some of her platforms include Instagram @mary_m_cosby with more than 430k followers.