PSC R604: Support – Administrative: Mailing/Distribution
R604 is the product and service code (PSC) federal agencies use for support – administrative: mailing/distribution, in the administrative support services group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 0
- Spending, FY2026
- $703.9 million
- Share to small businesses
- 8%
Where R604 sits in the PSC Manual
- Category: Service
- Group R: Support SVCS (Prof, Admin, MGMT)
- Group R6: Administrative Support Services
- Code R604: Support – Administrative: Mailing/Distribution
NAICS codes used with PSC R604
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with R604 most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 561499 | All Other Business Support Services | $1.4 billion |
| 561210 | Facilities Support Services | $299.4 million |
| 492110 | Couriers and Express Delivery Services | $174 million |
| 491110 | Postal Service | $121.3 million |
| 541611 | Administrative Management and General Management Consulting Services | $28.1 million |
| 561422 | Telemarketing Bureaus and Other Contact Centers | $23.4 million |
Who buys under PSC R604
Agencies with the most contract dollars under R604 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of Veterans Affairs | $1.7 billion |
| Internal Revenue Service | $54.4 million |
| Department of the Air Force | $51 million |
| Office of Procurement Operations | $40.8 million |
| Department of the Army | $37.1 million |
| Centers for Medicare and Medicaid Services | $20.2 million |
| Department of State | $16.4 million |
| Federal Acquisition Service | $13.9 million |
Federal spending under PSC R604 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $-94,455,456 |
| FY2025 | $727.9 million |
| FY2026 | $703.9 million |
| FY2027 (so far) | $126.7 million |
Who wins PSC R604 contracts
| Company | Obligated, last 3 years |
|---|---|
| Fedex Supply Chain Distribution System, Inc. | $1.2 billion |
| DLH Solutions Inc | $247.1 million |
| United Parcel Service Co. | $155.7 million |
| Servicesource Inc | $86.1 million |
| Servicesource Inc | $40.7 million |
| Versability Resources, Inc. | $30.6 million |
| Millbrook Support Services Inc | $21.7 million |
| Ipsos Public Affairs, LLC | $20 million |
| Pitney Bowes Inc. | $18.7 million |
| Inspiritec Inc | $18.6 million |
Related PSC codes
- R601 Admin SVCS/Material Management
- R602 Support – Administrative: Courier/Messenger
- R603 Support – Administrative: Transcription
- R605 Support – Administrative: Library
- R606 Support – Administrative: Court Reporting
- R607 Support – Administrative: Word Processing/Typing
- R608 Support – Administrative: Translation and Interpreting
- R609 Support – Administrative: Stenographic
- R610 Support – Administrative: – Personal Property Management
- R611 Support – Administrative: Credit Reporting
Frequently asked questions
What is PSC R604?
R604 is the service code in the federal Product and Service Code (PSC) Manual for support – administrative: mailing/distribution, under R (Support SVCS (Prof, Admin, MGMT)) and R6 (Administrative Support Services). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC R604?
Most federal contract dollars under PSC R604 go with NAICS 561499 (All Other Business Support Services), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC R604?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. FedReady can match new ones to your business and email you, free.