NAICS 561431: Private Mail Centers
Private Mail Centers is NAICS code 561431. A business is small under it with $19 million or less in average annual receipts. No federal contracts are open under this code right now.
- SBA size standard
- $19 million or less in average annual receipts
- Open contracts now
- 0
- Federal spending, FY2026
- $7 million
- Share won by small businesses
- 31%
- Small businesses registered
- 260
What NAICS 561431 covers
The Census Bureau's NAICS index lists these kinds of work under 561431:
- Mailbox rental centers, private
- Mailbox rental services combined with one or more other office support services, private
- Parcel mailing services combined with one or more other office support services, private
- Parcel mailing services, private
- Private mailbox rental centers
Read the full definition, including what's excluded, on census.gov.
SBA size standard for 561431
To count as a small business for a contract assigned NAICS 561431, your business must have $19 million or less in average annual receipts. Receipts are averaged over your last five completed fiscal years.
From SBA's table of size standards, effective Mar 17, 2023. Confirm it with SBA's size standards tool before you certify your size.
Who buys private mail centers
Agencies that awarded the most under NAICS 561431 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Drug Enforcement Administration | $4.2 million |
| Department of Veterans Affairs | $4.1 million |
| Food and Drug Administration | $2.9 million |
| Department of the Army | $2.3 million |
| Bureau of the Fiscal Service | $1.7 million |
| Defense Advanced Research Projects Agency | $1.6 million |
| Department of the Navy | $1.4 million |
| Social Security Administration | $1.2 million |
Your competition
260 businesses with active SAM.gov registrations are rated small under NAICS 561431, most of them in Texas (35), California (26), Maryland (22), Florida (21) and Georgia (19). Look any of them up with the free CAGE code and UEI lookup.
Federal spending under 561431 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $-4,197,107 |
| FY2025 | $13.5 million |
| FY2026 | $7 million |
| FY2027 (so far) | $930,456 |
Source: USAspending.gov, all contract awards with this NAICS code. Fiscal years start October 1.
Related NAICS codes
- 561410 Document Preparation Services
- 561421 Telephone Answering Services
- 561422 Telemarketing Bureaus and Other Contact Centers
- 561439 Other Business Service Centers (including Copy Shops)
- 561440 Collection Agencies
- 561450 Credit Bureaus
- 561491 Repossession Services
- 561492 Court Reporting and Stenotype Services
Frequently asked questions
What is NAICS code 561431?
561431 is the 2022 NAICS code for Private Mail Centers. The Census Bureau's index lists work such as mailbox rental centers, private, mailbox rental services combined with one or more other office support services, private, parcel mailing services combined with one or more other office support services, private under it. Federal contracting uses the 2022 codes.
What is the SBA size standard for NAICS 561431?
$19 million or less in average annual receipts. A business at or under that is small for contracts assigned this code. The current SBA table took effect Mar 17, 2023.
Are there government contracts for private mail centers?
None are open on SAM.gov right now, but new notices post daily. You can set up a free alert for this code.
How do I add NAICS code 561431 to my SAM.gov registration?
Update your entity registration on SAM.gov and add the code on the Goods and Services page, in the Assertions section. You can list several NAICS codes and mark one as your primary. Changes are free.
Keep going
- Search other NAICS codes by keyword or company
- How to choose NAICS codes for government contracts
- NAICS codes with the most open federal contracts
FedReady is an independent company, not affiliated with SBA, SAM.gov, the Census Bureau or any government agency. Open-contract counts come from SAM.gov and update daily; spending figures come from USAspending.gov.