United States Postcode Dataset

Washington, D.C has 298 postcodes, ranging from 20001 to 56999. postcodes from 20001 to 20599 cover residential, business and administrative areas, while postcodes from 56901 to 56999 are used for parcel return services.

A 5-digit postcode in the United States is the basic USPS postal code made up of five digits (format: 99999) that identifies a specific geographic delivery area—city, town, or part of a city—to facilitate mail sorting and delivery.

Yes. The United States uses postcodes — a five-digit postal code format (99999) — to identify postal delivery areas covering all cities and addresses across the country. Additionnaly, the ZIP+4 (9-digit) extension provides greater delivery precision.

Yes — the United States uses postcodes as postal codes, typically five digits in the format 99999. Additionnaly, the ZIP+4 (9-digit) extension provides greater delivery precision.

The postcode 12345 is assigned to Schenectady, New York.

Yes. The United States uses a postcode system for postal addresses; the standard format is five digits (99999), and an optional ZIP+4 adds a hyphen and four extra digits for more precise routing.

The country code “US” (or “USA”) is sometimes mistakenly entered in the postcode field in the United States.

Typical U.S. address:

Recipient name
Street address (apartment/suite on same line or second)
City, two-letter state abbreviation postcode
Country (for international mail)

Example:
John Smith
123 Main St Apt 4B
Springfield, IL 62704
United States

The United States does not have a single postcode. postcodes are 5-digit numbers (format 99999) assigned to specific localities and delivery areas. Across the country, there are 52,971 localities served by 41,344 distinct postcodes.

The postal code (postcode) format in the United States is five digits: 99999. Additionnaly, the ZIP+4 (9-digit) extension provides greater delivery precision.

A standard postcode in the United States is 5 digits long. There is also the ZIP+4 format, written as 5 digits, a hyphen, then 4 additional digits (for a total of 9 digits).

Yes. United States mailing addresses typically include a five-digit postcode (format 99999); for greater precision a ZIP+4 (99999-1234) may be used. Including the postcode is standard and required for proper postal routing.

postcode 20500 is assigned to the White House at 1600 Pennsylvania Avenue NW, Washington, D.C., United States.