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.
Jairo Salas was born in 1984.
Armando Salas was born in 1946.
Mary Salas was born in 1948.
Reineris Salas was born in 1987.
Lauro Salas was born in 1928.