What Is the Abbreviation for Idaho?
The standard 2-letter abbreviation for Idaho is ID.
Idaho Abbreviation
Idaho is abbreviated ID. ID is the form used in mailing addresses, forms, databases, and current style guides.
Idaho Abbreviation for Mailing and Forms
Use ID for Idaho in mailing addresses, shipping labels, and official records.
In all of these contexts write ID in uppercase. The form ID. with a period is incorrect for postal use.
What Does ID Stand For?
Idaho's USPS abbreviation is ID.
ID has been Idaho's standard postal abbreviation since 1963 and is the form used in current addresses, forms, and databases.
How to Write an Idaho Address
In a U.S. mailing address, write the city name, then ID in uppercase, then the five-digit ZIP Code. Never put a period after the abbreviation.
The same format applies in checkout forms, school worksheets, CRM systems, spreadsheets, shipping labels, and government databases — anywhere a two-letter state code is required.
Related Abbreviation Questions
These states share a first letter, region, or alphabetical position with Idaho and are commonly looked up alongside it.
FAQ
What is the abbreviation for Idaho?
The standard USPS abbreviation for Idaho is ID.
What is the postal abbreviation for Idaho?
ID is the two-letter postal abbreviation for Idaho. It is the form used in mailing addresses, shipping labels, forms, and databases.
How do you abbreviate Idaho?
Abbreviate Idaho as ID in current USPS, mailing, and database use.
What is the two-letter abbreviation for Idaho?
ID is the official two-letter abbreviation for Idaho.
What is the Idaho state code?
ID is the two-letter state code used for Idaho in mailing addresses, forms, spreadsheets, and databases.
Why is Idaho abbreviated ID?
Idaho's USPS abbreviation is ID.
What does ID stand for?
ID stands for Idaho in the USPS state abbreviation system.
What is the old abbreviation for Idaho?
Older editorial styles often wrote Idaho as Idaho. For mailing and database use, the modern standard is ID.
How do you write an Idaho mailing address?
Use the city name, then the two-letter postal code ID, then the ZIP Code. For example: Boise, ID 00000.
What state is ID?
ID is the postal abbreviation for Idaho, located in the West region. The capital is Boise.