Valhalla is a hamlet and census-designated place (CDP) located within the town of Mount Pleasant, inWestchester County, New York, United States. Its population was 3,162 at the 2010 U.S. Census.
According to local historians and published works, the wife of a postmaster was a devoted fan of the works of the composer Richard Wagner, and she shared that composer's interest in Norse mythology. Her preference led to the choice of the name "Valhalla", after the heavenly paradise of slain warriors in that mythology. The Kensico Cemetery was founded in 1889 in Valhalla at a time when many of the cemeteries in New York City were filling up, and several rural cemeteries were founded near the railroads that served the metropolis.The Kensico Cemetery is the final resting place of the actress Billie Burke, who played Glinda, the "Good Witch of the North", in the classic film The Wizard of Oz.