Start with the answer
Correspondence Clerks pay in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD and Portland-Vancouver-Hillsboro, OR-WA
The May 2025 BLS OEWS median for Correspondence Clerks is $43,340 per year in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD. It is $65,270 per year in Portland-Vancouver-Hillsboro, OR-WA. Philadelphia-Camden-Wilmington, PA-NJ-DE-MD is 33.6% below Portland-Vancouver-Hillsboro, OR-WA on the published median.
Both rows use SOC 43-4021 and the same annual wage metric. Median means the middle of each area's published wage spread. It is not one worker's pay. The larger median is not proof that one place gives a better job or a better result. It is one wage fact from one source period.
BLS lists 40 wage and salary jobs in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD and 80 in Portland-Vancouver-Hillsboro, OR-WA. Those are survey job counts, not open posts. Read pay, job scale, local share, and price level as separate facts before you make a choice.