Mary Cosby is an American television personality best known as a cast member of the Bravo reality TV series “The Real Housewives of Salt Lake City.” She is also an entrepreneur and runs her family’s empire of restaurants and Pentecostal churches.
Mary Cosby Biography
| Full Name | Mary Martha Jefferson |
| Nickname | Mary Cosby |
| Profession | Television personality |
| Date of Birth | 17 October 1972 |
| Age | 53 years old (as of 2026) |
| Birth Place | Utah, USA |
| Nationality | American |
| School | Local high school |
| College | Update soon |
| Education Qualification | Not public known |
| Gender | Female |
| Zodiac Sign | Libra |
| Ethnicity | African-American |
| Religion | Catholic |
| @mary_m_cosby |
Mary Cosby Age
Mary Cosby was born on 17 October 1972 in Utah, United States. She is 53 years old as of 2026, and her zodiac sign is Libra.
Mary Cosby Husband, Children
| Marital Status | Married |
| Affairs/Boyfriend | Dana Harris Robert C. Cosby |
| Spouse/Husband | Dana Harris (div. 1998) Robert C. Cosby (m. 1998) |
| Children | Son – Robert Jr. Cosby Daughter – N/A |
Mary Cosby Family
| Father’s Name | Not publicly known |
| Mother’s Name | Rosalind Cazares |
| Sibling’s Name | Harry Cosby III, and Nathaniel Cosby |
Career
| Debut | She started her TV career in 2020 |
| TV shows | 2020 – The Real Housewives of Salt Lake City 2025 – Wife swap: The Real Housewives Edition 2026 – The Cult of the Real Housewife |
Mary Cosby Height And Weight
| Height (approx) | In centimeters – 170 cm In meters – 1.70 m In feet & inches – 5’7” |
| Weight (approx) | In kilograms – 55 kg In pounds – 120 lbs |
| Eye Colour | Brown |
| Hair Colour | Dark brown |
| Body Measurements | 35-27-36 |
Mary Cosby Net Worth
American television personality Mary Cosby’s net worth is estimated to be between $5 million and $8 million as of 2026, based on her television earnings, inherited wealth, businesses, and other ventures. Her real estate holdings play a significant role in discussions about Mary Cosby’s net worth.
| Net Worth (approx) | $5-8 million (as of 2026) |
| Annual Income (approx) | $500,000 |
| Salary (approx) | Not a fixed salary |
| Income Source | TV career, real estate, business, and other |
Some Interesting Facts About Mary Cosby
- Mary Cosby was raised in Utah, United States of America.
- She was brought up by her mother, Rosalind Cazares, and her father’s name is unknown to the media.
- She first appeared on the reality show The Real Housewives in 2020.
- She has been married to Bishop Robert C. Cosby since 1988, and they have a son together.
- She and reality star Brandi Redmond have both appeared on Real Housewives.
- Mary Cosby has her own clothing line called Mari Marta’s Couture.
- Her grandmother, Rosemary Cosby, founded Faith Temple Pentecostal Church in 1968.
- Mary Cosby’s father was originally from Milwaukee.
- In 2024, she sued two executives at United Security Financial, accusing them of embezzlement.
- She was charged with unlawfully providing shelter to a runaway and contributing to the delinquency of a minor in 2021.
- Mary pleaded not guilty to the charges, and her charges were dropped in September 2022.
- Mary Cosby was married to Dana Harris, but they divorced in September 1998.
- Mary Cosby’s son, Robert Cosby Jr., died at the age of 23 on 23 February 2026.
FAQ:
How old is Mary Cosby?
As of 2026, Mary Cosby is 54 years old.
Who is Mary Cosby’s husband?
Since 1998, Mary Cosby is married to Robert C. Cosby.
What is Mary Cosby’s net worth?
Between $5-8 million, as of 2026.
What happened to Mary Cosby’s son?
Mary Cosby’s son Robert Cosby Jr. died on 23 February 2026.