✉️ USPS CODES

Indiana · USPS Abbreviation

Launch the USPS Abbreviation mini-game with Indiana as the first prompt. Quick facts and links below.

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Indiana's 2-letter postal abbreviation

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IN is the official USPS 2-letter abbreviation for Indiana. This page launches the USPS Abbreviations quiz starting with IN — match the code to the state.

Why IN?

The USPS standardized state abbreviations to 2 letters in 1963 to fit punched cards in early mail-sorting machines. The code IN takes the first 1 or 2 distinctive letters of Indiana.

Quick facts

USPS code
IN
Capital
Indianapolis
Largest city
Indianapolis
Region
Midwest
Admitted to Union
1816
Nickname
Hoosier State
Electoral votes
11
Bordering states
Illinois, Kentucky, Michigan, Ohio

Other Indiana games

→ Indiana · Place the State→ Indiana · State Capitals Quiz→ Indiana · State Flag Quiz→ Indiana · State Nickname Quiz

More about Indiana

→ Indiana state page → Learn the 50 US states → All US states games

Frequently asked

What is Indiana's abbreviation?

IN.

Is this game free?

Yes — 100% free, no signup, no ads. Just play.

Can I play other Indiana quizzes?

Yes — see the sibling games above. Indiana appears in every Statedoku mini-game.