 the census tract lays within, which can be used as a crosswalk to identify particular census tracts in a given community area</p></dd>
    <dt><code>geoid10</code></dt><dd><p>11-digit code that unique identifies the census tract as a concatenation of <code>statefp10</code> (2-digits) + <code>countyfp10</code> (3-digits) + <code>tractce</code> (6-digits)</p></dd>
    <dt><code>notes</code></dt><dd><p>not every census tract lays exactly within a community area which is where the City of Chicago made notes re