NAICS Code 491 - Postal Service

Government Level - NAICS 3-Digit - Updated to 2022 NAICS

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Total Verified Companies: 4,873
Contact Emails: 327,287
Company Websites: 4,792
Phone Numbers: 4,766
Business Addresses: 4,873
Companies with Email: 3,157
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NAICS CODE 491
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Last Updated: 05/26/2025
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Looking for more companies? See NAICS 48-49 - Transportation and Warehousing - 160,544 companies, 1,283,426 emails.

NAICS Code 491 Description

The Postal Service subsector includes the activities of the National Post Office and its subcontractors operating under a universal service obligation to provide mail services, and using the infrastructure required to fulfill that obligation. These services include delivering letters and small parcels. These articles can be described as those that can be handled by one person without using special equipment. This allows the collection, pick-up, and delivery operations to be done with limited labor costs and minimal equipment. Sorting and transportation activities, where necessary, are generally mechanized. The restriction to small parcels distinguishes these establishments from those in the transportation industries. These establishments may also provide express delivery services using the infrastructure established for provision of basic mail services.

The traditional activity of the National Postal Service is described in this subsector. Subcontractors include rural post offices on contract to the Postal Service.

Bulk transportation of mail on contract to the Postal Service is not included here, because it is usually done by transportation establishments that carry other customers' cargo as well. Establishments that provide courier and express delivery services without operating under a universal service obligation are classified in NAICS Code 492 - Couriers and Messengers. Source: Census.gov - NAICS 2022 compliant

Parent Category - 5-digit Level (less specific)

Subcategories - 4-digit Level (more specific)

Companies

SICCODE.com compiles comprehensive business data and executive contact leads for businesses within NAICS Code 491 - Postal Service. Some of the leading and most notable companies are listed below. To order a list of companies within NAICS Code 491 - Postal Service for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.

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Industry Executives

Would you like to email executives in NAICS Code 491 - Postal Service? Below are some of the common job titles available to be targeted.

  • Business Development
  • Chairman
  • C-Level
  • Director
  • Engineering
  • Executive Director
  • Facilities
  • Finance
  • Human Resource
  • IT
  • Manager
  • Marketing
  • Manufacturing
  • Operations
  • Owner
  • Partner
  • President
  • Principal
  • Purchasing
  • Sales
  • Vice President

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Questions & Answers

  • How many active businesses operate in NAICS Code 491?

    There are 4,873 verified business locations operating primarily in this industry.