# NAICS 491110: Postal Service

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [491110 Postal Service](https://bidrover.com/naics/491110)

This industry comprises establishments primarily engaged in providing mail services under a universal service obligation. Mail services include the carriage of letters, printed matter, or mailable packages, including acceptance, collection, processing, and delivery.

- NAICS code: 491110
- Title: Postal Service
- Sector: 48-49 Transportation and Warehousing
- Subsector: 491 Postal Service
- Industry group: 4911 Postal Service
- SBA size standard: $9 million average annual receipts
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 491110?

NAICS 491110 is "Postal Service" in the 2022 North American Industry Classification System, in sector 48-49 (Transportation and Warehousing). This industry comprises establishments primarily engaged in providing mail services under a universal service obligation. Mail services include the carriage of letters, printed matter, or mailable packages, including acceptance, collection, processing, and delivery.

### What is the SBA size standard for NAICS 491110?

A business is small under NAICS 491110 at or below $9 million average annual receipts, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 491110?

No open bid in BidRover cites NAICS 491110 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 491110 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [561499 All Other Business Support Services](https://bidrover.com/naics/561499)
- [492110 Couriers and Express Delivery Services](https://bidrover.com/naics/492110)
- [561431 Private Mail Centers](https://bidrover.com/naics/561431)
- [492210 Local Messengers and Local Delivery](https://bidrover.com/naics/492210)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.