| Number of Employees | Agency Name |
| 95,458 | DEPARTMENT OF VETERANS AFFAIRS |
| 59,075 | DEPARTMENT OF HOMELAND SECURITY |
| 46,752 | DEPARTMENT OF JUSTICE |
| 44,873 | DEPARTMENT OF HEALTH AND HUMAN SERVICES |
| 35,010 | DEPARTMENT OF TRANSPORTATION |
| 30,440 | DEPARTMENT OF TREASURY |
| 24,924 | DEPARTMENT OF COMMERCE |
| 15,946 | DEPARTMENT OF AGRICULTURE |
| 14,371 | DEPARTMENT OF INTERIOR |
| 13,996 | SOCIAL SECURITY ADMINISTRATION |
| 13,688 | NAT AERONAUTICS AND SPACE ADMINISTRATION |
| 12,443 | INTERNAL REVENUE SERVICE |
| 11,145 | ENVIRONMENTAL PROTECTION AGENCY |
| 8,725 | DEPARTMENT OF ENERGY |
| 7,284 | DEPARTMENT OF STATE |
| 6,846 | DEPARTMENT OF LABOR |
| 6,844 | GENERAL SERVICES ADMINISTRATION |
| 5,358 | DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT |
| 4,345 | FEDERAL DEPOSIT INSURANCE CORPORATION |
| 4,189 | SECURITIES AND EXCHANGE COMMISSION |
Keep in mind that the number of employees in each agency varies widely. For example, in 2017, OPM reported that among cabinet-level agencies, the Department of Veterans Affairs had more than 342,000 employees while the Department of Justice had about 112,000 and the Department of Agriculture had over 73,000.
This article displays the agencies with the highest average salaries. At the lower end of the salary scale, which agencies have the lowest average salaries? Chances are, most Americans have never heard of some of these federal organizations as they are often small in comparison to other agencies. Here is the list:
| Agency Name | Average Salary |
| BARRY GOLDWATER SCHOOL AND EXCELLENCE IN EDUCATION FOUNDATION | $50,497.80 |
| MORRIS K. UDALL AND STEWART L. UDALL FOUNDATION | $62,032.16 |
| ARMED FORCES RETIREMENT HOME | $62,629.50 |
| U.S. COMMISSION ON INTERNATIONAL RELIGIOUS FREEDOM | $65,702.61 |
| NATIONAL CREDIT UNION ADMINISTRATION | $68,446.91 |
| DEPARTMENT OF AGRICULTURE | $68,911.78 |
| INTERNATIONAL BOUNDARY AND WATER COMMISSION: U.S. SECTION | $69,118.67 |
| INTERNAL REVENUE SERVICE | $69,920.48 |
| INTERNATIONAL BOUNDARY COMMISSION: U.S. AND CANADA | $70,070.03 |
| COUNCIL OF ECONOMIC ADVISERS | $72,051.96 |