Kenny Rogers, a prolific singer who played a major role in expanding the audience for country music in the 1970s and ’80s, died on Friday at his home in Sandy Springs, Ga. He was 81.

His death was announced by his publicist, Keith Hagan. Mr. Hagan did not specify the cause but said Mr. Rogers had been in hospice care. Mr. Rogers retired from performing for health reasons in 2018.

Singing in a husky voice that exuded sincerity and warmth, Mr. Rogers sold well over 100 million records in a career that spanned seven decades. He had 21 No. 1 country hits, including two — “Lady,” written and produced by Lionel Richie, and “Islands in the Stream,” composed by the Bee Gees and performed with Dolly Parton — that reached No. 1 on the pop chart as well.

By the time he stopped performing, Mr. Rogers had placed more than 50 singles in the country Top 40, of which 20 also appeared in the pop Top 40. Long before the ascendancy of Garth Brooks and Shania Twain in the 1990s, he was among the first country artists to sell out arenas.