title: R Maps Geoid to Longitude and Latitude
body: <p>Good Afternoon,</p>
  
  <p>I'm trying to make my first map in R and could use some help converting the GEOID to a long/lat distance. Here's a sample:</p>
  
  <pre><code>geoid               name                                    population
  15000US110010001001 Block Group 1, District of Columbia, DC 1405
  15000US110010001002 Block Group 2, District of Columbia, DC 1362
  15000US110010001003 Block Group 3, District of Columbia, DC 1245
  </code></pre>
  
  <p>Can someone please help? When I try to search for this online, it doesn't help that there seem to be 10 digit geoids and 19 digit ones and even a 12.</p>