Escambia County, FL
History
Escambia County was created on July 21, 1821. It was named for the Escambia River. Escambia County and St. Johns County were Florida's original two counties with the Suwannee River being the boundary between the two.http://en.wikipedia.org/wiki/Escambia_County,_Florida
Modern Day Adjacent Counties
Escambia County, Alabama - north (this is one of the very few instances in the United States where two counties with the same name, but located in adjoining states, share a border)Santa Rosa County, Florida - east
Baldwin County, Alabama - west