MO is the acronym for the state of Missouri, and it is formed by combining the first and fifth letters of the state’s official name. This could appear to be a simple task, but it actually isn’t since the natural assumption is that the abbreviation for the state of Missouri is MI, which is the state’s initial two letters.
A List of the Abbreviations Used for US States
|State Name||USPS Abbreviation||Traditional Abbreviation|
|Nebraska||NE||Neb. or Nebr.|