United States Post Offices

United States Post Offices is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Government Offices Federal
• Postal Services

North American Industry Classification System (NAICS) Categories:

• Postal Service
• Executive Offices > Executive Offices Federal > Government Offices Federal

Standard Industry Classification (SIC) Categories:

• United States Postal Service
• Executive Offices > Executive Offices Federal > Government Offices Federal