I recall it changing during my childhood...
so I can only guess...late 80's?
IL is the state abbreviation for Illinois.
Illinois State University is commonly known as ISU.
IL
Kentucky
SA is the abbreviation for the state of South Australia.
UT = UTAH This is the official postal state abbreviation. No periods. Just two capital letters.
Illinois
MA is the postal abbreviation for Massachusetts.Note: All State abbreviations are two letters and both are capitalized.
A two letter abbreviation for the state of Massachusetts
There are no states that begin with the letters IA. IA is the abbreviation for the US state Iowa.
MS is the U.S. Postal Service abbreviation for the state of Mississippi. Miss. also is used as an abbreviation for Mississippi.
NM