Rose Marie, who became a radio star as a toddler in the 1920s and a television star on the hit sitcom “The Dick Van Dyke Show” in the 1960s — and who continued performing into the 21st century — died on Thursday in the Van Nuys neighborhood of Los Angeles. She was 94.

Her death was announced on her website and confirmed by her longtime publicist, B. Harlan Boll.

Originally known as Baby Rose Marie, she is probably best remembered for her “Dick Van Dyke Show” role as Sally Rogers, one of three comedy writers — the others were Rob Petrie (Mr. Van Dyke) and Buddy Sorrell (Morey Amsterdam) — who worked for the fictional series-within-a-series, “The Alan Brady Show.”

Sally was witty, wisecracking and independent-minded, but she was also perpetually on the hunt for a husband; though tough as nails, she was not immune to romantic misadventures. Her main significance, though, was that she worked as a comedy writer, a rarity for women at the time. (One inspiration for the role was said to be Selma Diamond, who had written for Sid Caesar in the 1950s.)

The action on “The Dick Van Dyke Show,” seen on CBS from 1961 to 1966, mostly alternated between the team’s Manhattan office and Rob’s home in New Rochelle, where his wife, Laura, was played by Mary Tyler Moore, who died in January. Created by Carl Reiner (who based it on his own experience writing for Mr. Caesar and played the part of Alan Brady), it was widely praised for its smart writing and its gifted ensemble, of which Rose Marie was an integral part. It consistently shows up on lists of television’s best comedies ever.