The crash happened just before 7 p.m. on Wednesday, Nov. 27 in Freeport.
Authorities said the 51-year-old woman was crossing Merrick Road near Henry Street from the north to the south side when she was hit by a 2008 Volkswagen heading eastbound.
She suffered trauma to her head and body and was taken to a nearby hospital, where she was pronounced dead at 7:33 p.m., police said.
On Thursday afternoon, Nov. 28, Nassau County Police identified the woman as Lourdes Sulfa Sanchez, age 51, from Lindenhurst.
The 62-year-old driver of the Volkswagen stayed at the scene.
The investigation is ongoing.
Click here to follow Daily Voice East Hampton and receive free news updates.