Question 1

What work fits NAICS 491110?

Accepted Answer

Operation of a contracted mail acceptance and retail counter at a government facility providing postage acceptance, PO box management, and customer mail transactions. Management and operation of a mail distribution center that sorts incoming addressed mail and routes flats and packages to internal delivery points. Contracted route delivery and pickup services that include daily sequencing, address delivery, and delivery-point reporting. Inter-facility transportation and sorted transfer of official correspondence and parcels between buildings under postal acceptance and manifesting procedures.

Question 2

When is NAICS 491110 a weak fit?

Accepted Answer

Courier and messenger services - private couriers perform point-to-point pickup and delivery without operating postal retail acceptance, postage accounting, or national postal sorting responsibilities. Logistics providers offering warehousing and fulfillment only - storage, order fulfillment, and kitting without postal acceptance, retail counter, or delivery-route operations. Mail equipment manufacturing or maintenance - production, repair, or calibration of sorting machinery and mail processing equipment rather than operating postal services.

Question 3

What solicitation language points to NAICS 491110?

Accepted Answer

Requirements for retail hours, acceptance of postage, postal payment reconciliation, and PO box management on-site. Scope language calling for daily route schedules, delivery-point sequencing, signature capture and proof-of-delivery, and chain-of-custody manifests for mail items. Performance metrics tied to on-time delivery rates for carrier routes, throughput at sorting operations, and accuracy of mail sorting by delivery zone.

Postal Service

What this NAICS covers

FY2025 snapshot

Federal obligation trend

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