nchor" id="format"><a class="anchor" href="#format"></a>Format</h2>

    <p>An sf data frame with 108,487 rows, 66 variables, and a geometry column:</p><dl>
<dt>	STATEFP10	</dt><dd><p>State FIPS code</p></dd>
<dt>	COUNTYFP10	</dt><dd><p>County FIPS code</p></dd>
<dt>	TRACTCE10	</dt><dd><p>Tract FIPS code</p></dd>
<dt>	BLOCKCE10	</dt><dd><p>Block FIPS code</p></dd>
<dt>	GEOID10	</dt><dd><p>Unique Geographic identifier (FIPS code)</p></dd>
<dt>	UR10	</dt><dd><p>Urban (U) - rural (R) classification</p></dd>
<d