'RHOSLC' star Mary Cosby's son Robert dies at 23

The 23-year-old son of the reality TV star passed away earlier this week, police confirmed.

Feb. 25, 2026 at 7:54pm

Got story updates? Submit your updates here. ›

Robert Cosby Jr., the 23-year-old son of "Real Housewives of Salt Lake City" star Mary Cosby, has died, according to the Salt Lake City Police Department. The police confirmed Cosby's death on Wednesday, February 25th, two days after he passed away on Monday, February 23rd.

Why it matters

Mary Cosby is a main cast member on the popular Bravo reality TV series "The Real Housewives of Salt Lake City", so the death of her young son is likely to generate significant media attention and sympathy from fans of the show.

The details

The Salt Lake City Police Department public information officer Sgt. Greg Wilking confirmed Robert Cosby Jr.'s death to USA TODAY. No further details about the cause or circumstances of his death have been released.

  • Robert Cosby Jr. died on Monday, February 23, 2026.
  • The police confirmed his death on Wednesday, February 25, 2026.

The players

Mary Cosby

A main cast member on the Bravo reality TV series "The Real Housewives of Salt Lake City".

Robert Cosby Jr.

The 23-year-old son of Mary Cosby who passed away.

Sgt. Greg Wilking

A public information officer with the Salt Lake City Police Department who confirmed Robert Cosby Jr.'s death.

Got photos? Submit your photos here. ›

What they’re saying

“Robert Cosby Jr. died Monday, Feb. 23, Salt Lake City Police Department public information officer Sgt. Greg Wilking confirmed to USA TODAY in a phone call Wednesday, Feb. 25.”

— Sgt. Greg Wilking, Public Information Officer, Salt Lake City Police Department

The takeaway

The tragic death of Mary Cosby's young son is sure to deeply impact the reality TV star and her family, as well as generate significant media coverage and sympathy from fans of the "Real Housewives of Salt Lake City" series.