What Is the Abbreviation for South Dakota?
The standard 2-letter abbreviation for South Dakota is SD.
South Dakota Abbreviation
South Dakota's abbreviation is SD. You may also see S.D. in older writing, but SD is the form used in mailing addresses, forms, databases, and current style guides.
South Dakota Abbreviation for Mailing and Forms
Use SD for South Dakota in mailing addresses, shipping labels, official forms, and database records.
In all of these contexts write SD in uppercase. The form SD. with a period is incorrect for postal use.
AP Style and Traditional South Dakota Abbreviation
What Does SD Stand For?
South Dakota uses the USPS abbreviation SD.
USPS adopted SD for South Dakota in 1963. The older form S.D. still appears in older publications, but SD is the standard postal abbreviation today.
How to Write a South Dakota Address
In a U.S. mailing address, write the city name, then SD 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 South Dakota and are commonly looked up alongside it.
FAQ
What is the abbreviation for South Dakota?
The standard USPS abbreviation for South Dakota is SD.
What is the postal abbreviation for South Dakota?
SD is the two-letter postal abbreviation for South Dakota. It is the form used in mailing addresses, shipping labels, forms, and databases.
How do you abbreviate South Dakota?
Abbreviate South Dakota as SD in current USPS, mailing, and database use.
What is the two-letter abbreviation for South Dakota?
SD is the official two-letter abbreviation for South Dakota.
What is the South Dakota state code?
SD is the two-letter state code used for South Dakota in mailing addresses, forms, spreadsheets, and databases.
Why is South Dakota abbreviated SD?
South Dakota uses the USPS abbreviation SD.
What does SD stand for?
SD stands for South Dakota in the USPS state abbreviation system.
What is the old abbreviation for South Dakota?
Older editorial styles often wrote South Dakota as S.D.. For mailing and database use, the modern standard is SD.
How do you write a South Dakota mailing address?
Use the city name, then the two-letter postal code SD, then the ZIP Code. For example: Pierre, SD 00000.
What state is SD?
SD is the postal abbreviation for South Dakota, located in the Midwest region. The capital is Pierre.