The correct postal abbreviation for the state of Mississippi is MS.
The abbreviation for Hawaii is the two letter postal code HI.
WA is the state abbreviation for Washington.
The postal abbreviation for Indiana is IN.
A postal code is a postal code, not an abbreviation for a city. An address should be written as (address) Bogota, Colombia (or Bogota COL if you have included the Colombian Postal Code above it)
the postal abbreviation for Oregon is OR.
The postal abbreviation for Maine is ME.
The postal abbreviation for Maine is ME.
MI is the postal Abbreviation for Michigan
Colorado's postal abbreviation is CO
The conventional abbreviation for Indiana is Ind. It has been for at least a century, and it still is. The postal code for Indiana is IN. On July 1, 1963, the U.S. Post Office inaugurated the five-digit ZIP codes system. At the same time, it published a list of two-letter state codes, intended to be used in addressing mail. Because it's hard to remember two abbreviations for every state, a lot of people use the postal state codes instead of the conventional abbreviations. The postal codes don't contain periods. You would write "Milwaukee, WI" on an envelope, for example. Other examples: Connecticut: conventional abbreviation, Conn.; postal code, CT. Iowa: has no conventional abbreviation because it's already short; postal code, IA. New Mexico: conventional abbreviation, N.Mex.; postal code, NM. Pennsylvania: conventional abbreviation, Pa.; postal code, PA.
There isn't a postal abbreviation for Oxford. The abbreviation for Oxfordshire, however, is 'Oxon'.