211 May 2026

Note: Use standardized abbreviations like "APT" or "STE" rather than the pound sign (#) if the specific designation is known.

To ensure a "proper" post for mail delivery, Section 211 of the USPS Postal Addressing Standards requires a standardized format to match ZIP+4 and City State files:

If your query is about a computer not starting, specifically relates to IBM PS/2 systems .