What state is MO?

MO = Missouri

MO is the official two-letter USPS postal abbreviation for Missouri. The capital is Jefferson City, and Missouri is in the Midwest region. See the full Missouri profile for borders, nickname, symbols, and map practice.

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Quick facts

Abbreviation

Capital

Jefferson City

Region

Midwest

Nickname

The Show-Me State

Easy to confuse with

FAQ

What state is MO?

MO is Missouri.

Is MO Missouri?

Yes. MO is the USPS postal abbreviation for Missouri.

What is the capital of Missouri?

The capital of Missouri is Jefferson City.

Which states are easy to confuse with MO?

Watch for codes like MS, MN, MT, MI when you see MO.