Registry · NAICS Index · Sector 56

561431 — Private Mail Centers

NAICS 561431 is 'Private Mail Centers', a 2022 U.S. national industry under Sector 56 (Administrative and Support and Waste Management and Remediation Services); the SBA small-business size standard is $19,000,000.

Description

This U.S. industry comprises (1) establishments primarily engaged in providing mailbox rental and other postal and mailing (except direct mail advertising) services or (2) establishments engaged in providing these mailing services along with one or more other office support services, such as facsimile services, word processing services, on-site PC rental services, and office product sales.

Exclusions & Cross-References

  • Operating contract post offices--are classified in Industry 491110, Postal Service;
  • Delivering letters and parcels (except under a universal service obligation)--are classified in Subsector 492,
  • Couriers and Messengers;
  • Providing voice mailbox services--are classified in U.S. Industry 561421, Telephone Answering Services;
  • Providing direct mail advertising services--are classified in Industry 541860, Direct Mail Advertising;
  • Providing only one of the support services (e.g., word processing services) that establishments in this
  • industry provide--are classified in the appropriate industry according to the service provided; and
  • Providing full service office space, whether on a lease or service contract basis--are classified in Industry
  • 531120, Lessors of Nonresidential Buildings (except Miniwarehouses).

Overview Facts

NAICS Code561431
Industry TitlePrivate Mail Centers
SBA Size Standard$19,000,000
IRS PBA Code561430 (rolled-up match)
Sectors HierarchySector 56 → 561 → 5614
Source / VerifiedUS Census 2022 NAICS Manual / 2026-06-28
NAICS Structure: 561431 National Industry
Sector (2)
56
Administrative and Support and Waste Management and Remediation Services
Subsector (3)
561
Administrative and Support Services
Industry Group (4)
5614
Business Support Services
Industry (5)
56143
Business Service Centers
National Industry (6)
561431
Private Mail Centers

Legacy SIC Concordance

Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.

Related Resources & Compliance Guides

Further regulatory reference links for NAICS code 561431:

Related Industries in 5614

561410 - Document Preparation Services...561421 - Telephone Answering Services...561422 - Telemarketing Bureaus and Other Contact ...561439 - Other Business Service Centers (includin...561440 - Collection Agencies...561450 - Credit Bureaus...

Frequently Asked Questions (FAQ)

Is 561431 a valid 2022 NAICS code?

NAICS 561431 is 'Private Mail Centers', a 2022 U.S. national industry under Sector 56 (Administrative and Support and Waste Management and Remediation Services); the SBA small-business size standard is $19,000,000.

What is the SBA size standard for NAICS 561431?

The SBA small business size standard for NAICS 561431 is $19,000,000 (based on receipts).

What is the legacy SIC code mapping for 561431?

NAICS code 561431 maps to the legacy 1987 SIC codes: 7389 - Business Services.