What Is the Abbreviation for Michigan?
The standard abbreviation for Michigan is MI. This page explains why Michigan uses MI, how the code fits into the modern USPS system, what older printed abbreviations looked like, and which nearby or similar state codes people commonly confuse with it.
What Is the Abbreviation for Michigan?
Michigan's abbreviation is MI. You may also see Mich. in older writing, but MI is the form used in mailing addresses, forms, databases, and current style guides.
MI is used for Michigan in mailing addresses, shipping labels, government forms, and business records.
Why Michigan Uses MI
Michigan's USPS abbreviation is MI.
USPS has used MI for Michigan since 1963. The older abbreviation Mich. still appears in older material, but MI is the standard postal form today.
Old Abbreviation for Michigan
Before the USPS two-letter system became the mailing standard in 1963, printed reference books and newspapers often used longer abbreviations with punctuation. For Michigan, that older style was usually Mich..
That older form still appears in historical texts, archival material, and some legacy style guides, but the modern postal and database standard is MI. If someone searches for old abbreviation for Michigan, the practical answer is to recognize Mich. and use MI in current writing and addresses.
How to Write Michigan in an Address
In standard American addressing, the state line uses the city name followed by the two-letter code and ZIP Code. The abbreviation stays uppercase and does not take periods.
That same format applies in checkout forms, school worksheets, CRM exports, spreadsheets, shipping labels, and government databases — anywhere a two-letter state code is required.
MI Compared With Similar State Codes
MI is often checked against MN, MS, and MO because several M-state abbreviations look similar at a glance.
Related Abbreviation Questions
These states share a first letter, region, or alphabetical position with Michigan and are commonly checked alongside it.
Capital, Region, and Context
Michigan belongs to the Midwest region. Its capital is Lansing, and its postal code MI is used in addresses, forms, and databases throughout the country.
Michigan entered the Union on January 26, 1837.
FAQ
What is the abbreviation for Michigan?
The standard USPS abbreviation for Michigan is MI.
What is the postal abbreviation for Michigan?
MI is the two-letter postal abbreviation for Michigan. It is the form used in mailing addresses, shipping labels, forms, and databases.
How do you abbreviate Michigan?
Abbreviate Michigan as MI in current USPS, mailing, and database use.
Why is Michigan abbreviated MI?
Michigan's USPS abbreviation is MI.
What does MI stand for?
MI stands for Michigan in the USPS state abbreviation system.
What is the old abbreviation for Michigan?
Older editorial styles often wrote Michigan as Mich.. For mailing and database use, the modern standard is MI.
How do you write a Michigan mailing address?
Use the city name, then the two-letter postal code MI, then the ZIP Code. For example: Lansing, MI 00000.
What state is MI?
MI is the postal abbreviation for Michigan, located in the Midwest region. The capital is Lansing.
Test All 50 State Abbreviations
Now that you know MI stands for Michigan, see how many of the other 49 you can get right. The M-states and I-states trip up most people.