What is the Federal pay scale (GS)? What are entry salaries for Officers, Specialists, and Civil Service?

U.S. Department of State employees are compensated based on government-regulated pay scales.  Most Civil Service employees are paid using the GS (General Schedule) pay scale, while Foreign Service employees are paid based on the FS (Foreign Service) pay scale 
For current GS pay tables, click here. 
For current FS pay tables, click here. 
Entry salaries depend on the position.  See FS Entry Salaries for more details.