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All state abbreviations

What state is SD?

SD = South Dakota

SD is the official two-letter USPS postal abbreviation for South Dakota. The capital is Pierre, and South Dakota is in the Midwest region. See the full South Dakota profile for borders, nickname, symbols, and map practice.

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Quick facts

Abbreviation
SD
Capital
Pierre
Region
Midwest
Nickname
The Mount Rushmore State

Easy to confuse with

SC = South Carolina
Not SD
NC = North Carolina
Not SD
ND = North Dakota
Not SD

FAQ

What state is SD?

SD is South Dakota.

Is SD South Dakota?

Yes. SD is the USPS postal abbreviation for South Dakota.

What is the capital of South Dakota?

The capital of South Dakota is Pierre.

Which states are easy to confuse with SD?

Watch for codes like SC, NC, ND when you see SD.