title: Plotting color map with zip codes in R or Python
body: <p>I have some US demographic and firmographic data.<br>
  I would like to plot zipcode areas in a state or a smaller region (e.g. city). Each area would be annotated by color and/or text specific to that area. The output would be similar to <a href="http://maps.huge.info/" rel="noreferrer">http://maps.huge.info/</a> but a) with annotated text; b) pdf output; c) scriptable in R or Python.</p>
  
  <p>Is there any package and code that allows me to do this?</p>