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NAICS Code· 561431

NAICS 561431: Private Mail Centers

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. Cross-References. Establishments primarily engaged in--Show more

NAICS 561431 – Private Mail Centers encompasses the operation of commercial facilities that provide mail handling, package receiving, shipping, and related logistical services to government personnel and agencies. These centers offer services such as mailbox rentals, courier coordination, package tracking, notary services, and secure document handling, often serving as off-site extensions of federal postal infrastructure.

5
Active Contracts
$5.7M
Total Obligations (12mo)
14
Awarded Contracts (12mo)
8
Contractors Awarded (12mo)
1
Median Bidders per Award
-9.2%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 561431.

AI Industry Description

NAICS 561431 – Private Mail Centers encompasses the operation of commercial facilities that provide mail handling, package receiving, shipping, and related logistical services to government personnel and agencies. These centers offer services such as mailbox rentals, courier coordination, package tr...

NAICS 561431 – Private Mail Centers encompasses the operation of commercial facilities that provide mail handling, package receiving, shipping, and related logistical services to government personnel and agencies. These centers offer services such as mailbox rentals, courier coordination, package tracking, notary services, and secure document handling, often serving as off-site extensions of federal postal infrastructure. In the government contracting landscape, private mail centers support mission-critical administrative functions by ensuring timely, secure, and scalable mail and parcel management for field offices, remote installations, and civilian personnel who require reliable postal alternatives to USPS facilities. These services are particularly valuable in locations with limited or inconsistent federal postal access, enabling continuity of operations across decentralized federal workforces. No contractor data is available to identify top performers in this NAICS code. The competitive landscape is typically composed of small businesses, local franchise operators of national brands, and regional logistics providers that hold service contracts with federal installations. Many contractors operate under small business set-asides due to the localized, service-oriented nature of the work. No agency data is available to identify primary buyers. However, demand is generally driven by agencies with dispersed field operations, including the Department of Defense, General Services Administration, Department of Veterans Affairs, and U.S. Postal Service contractors managing non-postal mail hubs. Demand arises from programs requiring secure, consistent, and accessible mail services for personnel in garrisons, research outposts, and administrative satellite offices. The market is characterized by low entry barriers and high fragmentation, with opportunities concentrated in areas lacking direct federal postal infrastructure. Contracting is often awarded through indefinite-delivery, indefinite-quantity (IDIQ) vehicles or micro-purchase thresholds, making it accessible to small businesses. Trends suggest increasing demand for integrated digital tracking, secure document handling, and hybrid mail solutions that bridge physical and electronic workflows.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 561431 work as a small business.

$19.0M
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Top Contractors

Companies with the highest total award value under NAICS 561431, ranked by dollars won.

Ranked by Total Awards
INTELLECTUS, LLC$1.7M
SYSCOM, INC$1.6M
POSTAL STRATEGY CONSULTING LLC$1.4M
ALLISON PAYMENT SYSTEMS, LLC$575K
WARREN COUNTY ASSOCIATION FOR RETARDED CITIZENS, INC.$281K
LA POSTE - SA$113K
MISCELLANEOUS FOREIGN AWARDEES$60K
PITNEY BOWES INC.$873.34
Top 8 combined$5.7M14

Top Agencies

Federal agencies directing the most contract spending toward NAICS 561431.

Ranked by Total Awards
Department Of Homeland Security$2.3M
Department Of Justice$1.6M
Department Of Veterans Affairs$1.4M
Department Of Defense$282K
Department Of State$173K
Top 5 combined$5.7M14

Competition

How many companies historically bid on federal awards in NAICS 561431, from bidder counts reported on USAspending.

Usually Single-Bid

Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 1,264 reported awards

Median Bidders

1

Per reported award, all-time

Single-Bid Awards

82%

Share of reported awards with one bidder

10+ Bidder Awards

1%

Share of reported awards with 10+ bidders

Reported Awards

1,264

80% of 1,588 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
561431This Code
Private Mail Centers
Usually Single-Bid182%
1,26480% of 1,588
56143NAICS Industry
Fewer Bidders250%
8,19991% of 9,037
5614Industry Group
Business Support Services
Usually Single-Bid157%
106,67986% of 124,245
561Subsector
Fewer Bidders248%
851,45979% of 1,073,211
56Sector
Administrative and Support and Waste Management and Remediation Services
Fewer Bidders245%
1,126,23577% of 1,472,146

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Private Mail Centers, by shared sector, subsector, and industry group.

Document Preparation Services

This industry comprises establishments primarily engaged in one or more of the following: (1) letter...
561410Same Industry GroupHigh Similarity

Telephone Answering Services

This U.S. industry comprises establishments primarily engaged in answering telephone calls and relay...
561421Same Industry GroupHigh Similarity

Telemarketing Bureaus and Other Contact Centers

This U.S. industry comprises establishments primarily engaged in operating call centers that initiat...
561422Same Industry GroupHigh Similarity

Other Business Service Centers (including Copy Shops)

This U.S. industry comprises (1) establishments generally known as copy centers or shops primarily e...
561439Same Industry GroupHigh Similarity

Collection Agencies

This industry comprises establishments primarily engaged in collecting payments for claims and remit...
561440Same Industry GroupHigh Similarity

Credit Bureaus

This industry comprises establishments primarily engaged in compiling information, such as credit an...
561450Same Industry GroupHigh Similarity

Repossession Services

This U.S. industry comprises establishments primarily engaged in repossessing tangible assets (e.g.,...
561491Same Industry GroupHigh Similarity

Court Reporting and Stenotype Services

This U.S. industry comprises establishments primarily engaged in providing verbatim reporting and st...
561492Same Industry GroupHigh Similarity

Explore contracts across multiple NAICS codes Browse all NAICS Codes

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NAICS 561431 FAQ

Frequently Asked Questions

NAICS code 561431 covers Private Mail Centers. 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. Cross-References. Establishments primarily engaged in--

Recently Posted in Private Mail Centers

NAICS: 561431
New
SLED
Document Scanning and ADA Compliance ServicesThis subcontract opportunity involves providing high-volume document scanning and ADA compliance services for prime contractors working with the City of Los Angeles Office of the City Clerk. The scope of work includes the digitization of archival folders, photographs, and colored documents, along with electronic image enhancement and indexing based on specific city parameters. A critical component of the contract is ensuring all digital files are fully compliant with ADA WCAG requirements through the use of specialized remediation software. The project is based in Los Angeles, California, and requires the delivery of fully indexed, accessible digital files. Interested parties should note the response deadline of December 16, 2026.
Clerk, Office of the City

POSTED

6 days ago

DEADLINE

in about 1 month
View Details
NAICS: 561431
New
Federal
NARA Archival Preparation and TransportThe NARA Archival Preparation and Transport subcontract is a small business set-aside project under the Department of Homeland Security's Incident Support Section. The primary objective is to support prime contractors on FEMA inbound mail operations by preparing processed physical documents for long-term storage and ensuring their secure delivery to the National Archive Center. The scope of work involves filing and packaging documents using archival-grade materials in strict accordance with NARA temporary storage specifications. The contractor is responsible for the end-to-end process of creating NARA-compliant archived packages and transporting them to the designated facility.
Incident Support SECTION(ISS70)

POSTED

6 days ago

DEADLINE

N/A
View Details
NAICS: 561431
New
Federal
Outbound Mail Operations - Notice
Solicitation # PreSol000034
The Federal Emergency Management Agency (FEMA) is seeking a contractor to provide Outbound Mail Operation Support Services to support the Individuals and Households Program (IHP). This requirement involves the printing, inserting, sealing, applying postage, and pre-sorting of outbound correspondence addressed to disaster victims. The government intends to award one Indefinite-Delivery, Indefinite-Quantity (IDIQ) contract, with task orders issued on a firm-fixed-price or cost-reimbursable basis. The contract will include a one-year base period consisting of a 90-day transition period and a nine-month full operations period, with four subsequent one-year option periods. All services and personnel must be located within the continental United States, and the contractor must be fully operational within 90 calendar days of the award. This procurement is set aside exclusively for small business concerns under NAICS code 561431, with the formal solicitation anticipated around November 20, 2026, and a closing date of December 20, 2026. The contractor will be held to strict performance standards, including 100 percent accuracy for PII security in envelopes and 99 percent compliance with USPS weight and size standards. High security requirements are in place, including the need for personnel security clearances, the execution of DHS Non-Disclosure Agreements, and the appointment of an on-site IT system security officer. Additionally, the contractor must comply with OSHA standards and Section 504 of the Rehabilitation Act of 1973.
Incident Support SECTION(ISS70)

POSTED

6 days ago

DEADLINE

N/A
View Details
NAICS: 561431
New
Federal
Inbound Mail Operations - Notice
Solicitation # PreSol000033
The Federal Emergency Management Agency (FEMA), under the Department of Homeland Security, is seeking a contractor to provide comprehensive inbound mail operation support services. This requirement will be awarded as a single Indefinite-Delivery, Indefinite-Quantity (IDIQ) contract with a one-year base period and four optional one-year extensions. The procurement is set aside exclusively for small businesses under NAICS code 561431. The contractor must operate from their own facility within the continental United States and is responsible for the pickup of mail from the Hyattsville, Maryland FEMA Recovery Service Center or designated U.S. Post Offices. The scope of work includes the receipt, processing, scanning, digitization, and tracking of mail from various commercial sources, as well as the translation of non-English correspondence and the preparation of documents for National Archives and Records Administration (NARA) temporary storage. The contractor must maintain a baseline processing capacity of 50,000 images per month, with the ability to scale up to 1,250,000 images during surge conditions. Performance is measured by strict quality standards, including 100 percent accuracy for applicant PII security and 99 percent accuracy for translations, image quality, and archiving compliance. Key administrative requirements include the submission of a phase-in plan within 14 days of award and a Continuity of Operations Plan and Quality Control Plan within 30 days. Full operational capability must be achieved within 90 calendar days of the award. Security requirements are stringent, requiring personnel to have access to sensitive but unclassified (FOUO) information, the execution of DHS Non-Disclosure Agreements, and the appointment of an on-site IT system security officer. The formal solicitation is anticipated to be posted around November 20, 2026, with a closing date of December 20, 2026.
Incident Support SECTION(ISS70)

POSTED

6 days ago

DEADLINE

N/A
View Details
NAICS: 561431
SLED
Document Scanning and Digitization ServicesThis subcontract for the City of Portsmouth in Virginia involves the physical conversion of paper human resources records into digital formats. The selected provider will utilize high-volume industrial scanners and OCR software to digitize personnel files, applicant documents, and retiree records. A critical component of the scope includes indexing and classifying these documents to ensure they map correctly to the HRDMS while maintaining strict adherence to PII data privacy and security standards. The project falls under NAICS code 561431 and requires the delivery of fully indexed electronic files. Interested parties must submit their responses by December 3, 2026. Performance of the services will take place within the City of Portsmouth.
City of Portsmouth

POSTED

8 days ago

DEADLINE

in 29 days
View Details
NAICS: 561431
SLED
Municipal Records DigitizationThis subcontract for Municipal Records Digitization involves the end-to-end conversion of physical municipal records into digital formats for prime contractors working on Town of Milton projects in Massachusetts. The scope of work includes the secure collection of records from Town Hall, physical preparation such as removing staples and clips, high-volume scanning using professional equipment, and indexing files to ensure searchability. The project will be performed in Milton, Massachusetts, with the final deliverable being a complete set of indexed electronic records. Interested parties should note that the response deadline is November 13, 2026, and the work falls under NAICS code 561431.
Town of Milton

POSTED

8 days ago

DEADLINE

in 9 days
View Details
NAICS: 561431
Federal
Postage Support Services for the 9th Mission Support Command (MSC)
Solicitation # W912CN-27-M-CU01
The 413th CSB, RCO-Hawaii intends to establish a sole-source Blanket Purchase Agreement under the authority of 10 U.S.C. 3204(a)(1) to provide Personal Computer (PC) Postage Support Services for the 9th Mission Support Command (MSC). This effort covers five key locations within the Pacific Area of Responsibility, including remote reserve centers in American Samoa, Guam, and Saipan. The objective is to implement cost-effective postage management systems, including all necessary hardware and software, to enable the printing of postage and shipping labels via Dymo or standalone desktop printers. The solution must utilize a centralized automated system to track postal spending through client access codes and provide consolidated reporting on a daily, weekly, monthly, quarterly, and annual basis, with rate calculations adhering to USPS standards. The tentative period of performance consists of a 10-month base period followed by three 12-month options. To ensure network security, the solution must present no vulnerability to NIPRNET networks and comply with DOD security parameters, including Common Access Card (CAC) authentication. Administrative requirements include the mandatory use of Wide Area Work Flow – Receipt and Acceptance (WAWF-RA) with the 2-in-1 invoicing option, and the vendor must provide one consolidated master invoice for all five locations. Additionally, the contract requires a non-appropriation of funds clause under the GSA agreement to allow for the cancellation of software agreements without penalty if a reserve center closes. All shipments must be clearly marked with the full contract number to facilitate timely receiving reports.
0413 Aq Hq Rco-Hi

POSTED

9 days ago

DEADLINE

N/A
View Details
NAICS: 561431
SLED
RFP: Virtual Mailroom
Solicitation # RFP_Virtual_Mailroom
The Los Angeles County Employees Retirement Association (LACERA) has issued a solicitation for a Virtual Mailroom service provider. This opportunity is designated for performance in Pasadena, California, and is managed by a local government organization. Interested vendors must submit their responses by the deadline of December 4, 2026, at 4:00 PM PT. Prospective bidders are required to access the official bid documents and any subsequent addenda through the provided web links. Because the solicitation is hosted on external platforms, vendors may need to complete additional registrations to participate. All inquiries regarding the contract language or missing information should be directed to the originating agency.
Los Angeles County Employees Retirement Association (LACERA)

POSTED

13 days ago

DEADLINE

in about 1 month
View Details
NAICS: 561431
SLED
Mail House Services
Solicitation # 754-TXST-2026-RFP-523-VPGOI
Texas State University is soliciting proposals under solicitation number 754-TXST-2026-RFP-523-VPGOI for a qualified mail house services provider. The primary objective is to support the Admissions Office and other university departments through the storage and fulfillment of approximately 920,000 to 1,000,000 pieces of inventory annually. Required services include web-based ordering and inventory tracking, mailing-list processing, CASS, de-duplication, presorting, addressing, labeling, and a full range of fulfillment activities such as folding, tabbing, gluing, collating, inserting, sealing, and metering. Additionally, the provider must offer print on demand, proofing, USPS documentation, and the pickup and delivery of publications. The selected contractor must support the university's nonprofit bulk-mail permit, ensure full compliance with USPS requirements, and maximize available postal discounts. Performance expectations include the provision of a dedicated account representative and the completion of mailing requests generally within 72 hours. Proposals must be submitted electronically via the TXST MarketPlace Jaggaer System by November 13, 2026, at 5:00 p.m. CT. The point of contact for this solicitation is Dan Alden.
Texas State University

POSTED

14 days ago

DEADLINE

in 9 days
View Details
NAICS: 561431
Closed
SLED
CITY MAIL SERVICES
Solicitation # RFP 2027-09
The City of Edinburg is soliciting proposals under RFP 2027-09 for comprehensive mail services to support the daily operations of the City Secretary's Department and the Utility Billing Water Department. The selected vendor will be responsible for receiving, sorting, metering, and processing outgoing correspondence, including approximately 90,000 pieces of mail annually for the City Secretary and roughly 30,000 water bills per month for the Utility Billing division. To be eligible, vendors must maintain a permanent business location within the Rio Grande Valley, specifically in Edinburg or within a 25-mile radius of City Hall. The provider is required to maintain a secure environment for all mail and comply with all United States Postal Service requirements and state and federal confidentiality laws. The contract will be awarded based on a weighted evaluation focusing on cost proposal and pricing (25%), service reliability and turnaround time (20%), technical approach (20%), vendor qualifications (15%), local availability (15%), and past performance (5%). Local vendors within Edinburg city limits may receive a 5% bid price preference. Administrative requirements include monthly itemized invoicing separated by department and the submission of various certifications, including disclosures regarding conflicts of interest, litigation, and boycotts of Israel and energy companies. Proposals are due by November 3, 2026, and must be submitted as a single PDF via the e-procurement portal along with required physical copies.
Finance

POSTED

21 days ago

CLOSED

1 day ago
View Details
NAICS: 561431
Awarded
International
BWC Hybrid Mail - Synertec Collaboration - UHB / ROH / BWC / BCHC
Solicitation # C476158
This contract awards Synertec Limited the provision of Hybrid Mail Services for the Birmingham Women's and Children's NHS Foundation Trust, as well as University Hospitals Birmingham, Royal Orthopaedic Hospital, and Birmingham Community Healthcare Trust. The agreement, identified by solicitation number C476158, is valued at 1,000,000 GBP excluding VAT. The term of the contract is estimated to run from October 9, 2026, through April 30, 2028, with the possibility of extensions extending the service period until 2030. The procurement falls under NAICS code 561431 and is managed through the Birmingham Women's and Children's NHS Foundation Trust.
Birmingham Women's and Children's NHS Foundation Trust

POSTED

27 days ago

DEADLINE

N/A
View Details
NAICS: 561431
Awarded
International
ROH Hybrid Mail - Synertec Collaboration - UHB / ROH / BWC / BCHC
Solicitation # C476133
University Hospitals Birmingham NHS Foundation Trust has awarded a contract to Synertec for the provision of Hybrid Mail Services supporting UHB, ROH, BWC, and BCHC. This agreement was made under Lot 4 of the Patient/Citizen Communication, Engagement & Hybrid Mail Solutions framework. The contract is valued at 400,000 pounds excluding VAT. The term of the agreement is estimated to run from October 8, 2026, through April 30, 2028, with the possibility of extensions extending the service period to 2030. The procurement is identified by solicitation number C476133 and falls under NAICS code 561431.
University Hospitals Birmingham NHS Foundation Trust

POSTED

27 days ago

DEADLINE

N/A
View Details

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