If Salas is the name of a place, there is no plural but the possessive case can be made for Salas's... e.g. Salas's schools, Salas's aging population.
Hank Salas's birth name is Enrique Salas.
Adolfo Salas's birth name is Adolfo Domnguez Salas.
Marina Salas's birth name is Marina Salas Rodrguez.
Rex Salas's birth name is Rex Alan Salas.
Stephanie Salas's birth name is Stephanie Salas Banquells.
Chris Salas is a web celebrity.
No, Esther Salas is not single.
Armando Salas was born in 1946.
Jairo Salas was born in 1984.
Floyd Salas was born in 1931.
Mary Salas was born in 1948.
Patricio Salas was born in 1988.