Elmira is a city and the county seat of Chemung County, New York, United States. It is the principal city of the Elmira, New York, metropolitan statistical area, which encompasses Chemung County. The population was 26,523 at the 2020 census, down from 29,200 at the 2010 census, a decline of more than 7 percent.

Chemung County is a county in the U.S. state of New York. The population was 84,148 as of the 2020 census. Its county seat is Elmira. Its name is derived from a Delaware Indian village whose name meant "big horn". The county is part of the Southern Tier region of the state.