The Department of Defense, Department of the Treasury, and the U.S. Postal Service were the largest federal employers in Philadelphia County, according to the most recent available data.
A bar chart shows the number of employees at the 10 largest federal agencies in Philadelphia County. The figures show that, as of September 2024, the Department of Defense had the most employees at 8,032, the Department of the Treasury had the second most at 5,510, and the U.S. Postal Service had the third most at 5,044.