The pop opera singer's cause of death was heart failure, but there will not be an autopsy to confirm.
Scott County Coroner Scott Amick told The Associated Press that Boyd, 42, died at about 6 p.m. Sunday at his mother's house in Sikeston. TMZ reported that he had a known health condition released to his heart.
Scott County Coroner Scott Amick told Fox News the Season 3 victor died of an array of diseases pertaining to his weight, including heart and kidney failure and liver disease.
A local hero in his home state of Missouri, local officials even grew to nickname Neal "the voice of Missouri" due to the multiple public appearance he made in the decade since his "America's Got Talent" win.
A singer who was a victor on the NBC competition program "America's Got Talent" is dead at 42.
Neal Evans Boyd was born November 18, 1975, and grew up in Sikeston.
Just a year before his passing, Boyd and his mother, Esther, were in a major auto accident after he blacked out behind the wheel.
After winning America's Got Talent, Neal recorded one album titled My American Dream. "[Recovery is] a very slow progress".
In 2011, the singer ran as Republican for the Missouri House of Representatives.
Boyd's twitter biography still has the line, "Boyd for Missouri 2014".