Elmira is a census-designated place (CDP) in Solano County, California, United States. The population was 188 at the 2010 census.
Elmira, California, is named after Elmira, New York.In the 19th and early 20th century, Elmira was the major railroad stop between Fairfield and Davis.To get to Vacaville, you had to take a spur from Elmira. Then, when California highway 40 was built through Vacaville, Vacaville grew and Elmira shrunk. Today, Vacaville is more than 40 times the size of Elmira.