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All state abbreviations

What state is IN?

IN = Indiana

IN is the official two-letter USPS postal abbreviation for Indiana. The capital is Indianapolis, and Indiana is in the Midwest region. See the full Indiana profile for borders, nickname, symbols, and map practice.

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Quick facts

Abbreviation
IN
Capital
Indianapolis
Region
Midwest
Nickname
The Hoosier State

Easy to confuse with

IA = Iowa
Not IN
ID = Idaho
Not IN
IL = Illinois
Not IN

FAQ

What state is IN?

IN is Indiana.

Is IN Indiana?

Yes. IN is the USPS postal abbreviation for Indiana.

What is the capital of Indiana?

The capital of Indiana is Indianapolis.

Which states are easy to confuse with IN?

Watch for codes like IA, ID, IL when you see IN.