IA. or Ia.
The postal abbreviation for Iowa is IA.
Iowa's postal abbreviation is IA.
Iowa's two-letter abbreviation is IA.
The postal abbreviation for Indiana is IN.
The postal abbreviation for Maine is ME.
The postal abbreviation for Maine is ME.
the postal abbreviation for Oregon is OR.
Colorado's postal abbreviation is CO
MI is the postal Abbreviation for Michigan
PR or PR USA
The postal abbreviation for Minnesota is MN.
The postal abbreviation for Minnesota is MN.