# NAICS 491110: Postal Service

The SBA size standard for NAICS 491110 is $9,000,000 in average annual receipts (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 491110 |
| Title | Postal Service |
| Level | 6 |
| Parent | 49111 |
| Size standard | $9,000,000 in average annual receipts |
| Footnote | - |

## Description

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. Due to the infrastructure requirements of providing mail service under a universal service obligation, postal service establishments often provide parcel and express delivery services in addition to the mail service. Establishments primarily engaged in performing one or more parts of the basic mail service, such as sorting, routing

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/491110/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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