title: I need to store postal codes in a database. How big should the column be?
body: <p>I expect the column to be a VARCHAR2, in my Oracle Database.</p>
  
  <p>US Zips are 9.</p>
  
  <p>Canadian is 7.</p>
  
  <p>I am thinking 32 characters would be reasonable upper limit</p>
  
  <p>What am I missing?</p>
  
  <p>[EDIT]
  TIL: 12 is a reasonable answer to the question
  Thanks to everyone who contributed.</p>