explorer_app/app/views/shared/_demographics_headers.html.erb
<th class="text-end">Population</th>
<th class="text-end">Population Density</th>
<th class="text-end">Housing Units</th>
<th class="text-end">Housing Density</th>
<th class="text-end">Land Area</th>
<th class="text-end">Water Area</th>