postal code system

A postal code is a series of letters and numbers used by postal services to identify specific geographic areas for efficient mail sorting and delivery. They can denote neighborhoods, towns, or regions, helping postal workers quickly locate destinations. The system varies by country; some use numerical codes, others combine letters and numbers. Postal codes improve accuracy and speed, especially in densely populated or complex areas. They are essential for organizing the postal network, ensuring mail is routed correctly, and reaching recipients promptly.