BLS Occupational Employment Statistics, May 2019. Occupation demographics: BLS Current Population Survey data, 2020. Occupation codes used for wages: 53-3052, 21-1018, 31-1120, 33-9032, 39-5011, NAICS 623100, NAICS 624200, 53-3058, 43-5050, 43-5021. Total postal employees as of September 2020: 644,000.
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