Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™. Find by Address By City and State

Private carriers and the USPS use ZIP Codes to route deliveries. In addition, ZIP Codes have become a basis for breaking down demographic, marketing, and sales data for analytical purposes. The early …

A ZIP Code is an essential part of the mailing process. We provide your business with several different ways to find a ZIP Code and understand it.

ZIP Codes™ are an integral part of making sure the mailpiece is processed quickly and efficiently. Not having a ZIP Code™ on your mail causes unnecessary delays because it will require manual …

Oct 9, 2024 · Have you ever wondered how long it will take for your mail to be delivered? That’s why I created the Mail Time Calculator—to estimate the time it takes for mail delivery between postal or zip …

What is the maximum length of a postcode? The postcodes are alphanumeric, and are variable in length: ranging from six to eight characters (including a space). Each postcode is divided into two …

United States ZIP codes are five numerical digits long. ZIP+4 codes, also known as add-on or plus-four codes, include four additional digits that identify a geographic segment within a ZIP code delivery area.

Need to look up a ZIP Code™? Try the ZIP Code™ lookup tool on USPS.com. Note: The ZIP Code™ lookup tool will display the address in USPS standardized format. This may look different than the …

Jan 28, 2025 · Zip Codes have five digits, followed by an additional optional four digits for “ZIP+4”. The first digit represents a group of states. The second and third digits represent the sectional center …

Aug 30, 2025 · The size of a ZIP Code varies significantly due to operational and geographical considerations. Population density plays a major role; urban areas typically have smaller, more …