The GS Pay Scale varies by city, with Boston, San Diego, Los Angeles, and Denver offering different salary levels based on locality adjustments. For example, the GS Pay Scale Boston accounts for the higher cost of living in the area. Likewise, the GS Pay Scale San Diego and GS Pay Scale Los Angeles provide higher wages to align with Southern California's living expenses. Meanwhile, the GS Pay Scale Denver is tailored to the Colorado market, ensuring fair federal salary rates.