Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of Welsh principal areas by population
Table title:

Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Rank </th><th colspan=1 rowspan=1 > District </th><th colspan=1 rowspan=1 > Population </th><th colspan=1 rowspan=1 > Population density/km² </th><th colspan=1 rowspan=1 > Styleand </th></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td class="highlighted"  colspan=1 rowspan=1 > Cardiff </td><td colspan=1 rowspan=1 > 362,800 </td><td colspan=1 rowspan=1 > 2,574 </td><td colspan=1 rowspan=1 > City and county </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2 </td><td class="highlighted"  colspan=1 rowspan=1 > Swansea </td><td colspan=1 rowspan=1 > 245,500 </td><td colspan=1 rowspan=1 > 646 </td><td colspan=1 rowspan=1 > City and county </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Rhondda Cynon Taf </td><td colspan=1 rowspan=1 > 239,100 </td><td colspan=1 rowspan=1 > 563 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Carmarthenshire </td><td colspan=1 rowspan=1 > 186,500 </td><td colspan=1 rowspan=1 > 78 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Caerphilly </td><td colspan=1 rowspan=1 > 180,800 </td><td colspan=1 rowspan=1 > 651 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > Flintshire </td><td colspan=1 rowspan=1 > 155,200 </td><td colspan=1 rowspan=1 > 354 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > Newport </td><td colspan=1 rowspan=1 > 151,500 </td><td colspan=1 rowspan=1 > 795 </td><td colspan=1 rowspan=1 > City and county </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > Bridgend </td><td colspan=1 rowspan=1 > 144,300 </td><td colspan=1 rowspan=1 > 575 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > Neath Port Talbot </td><td colspan=1 rowspan=1 > 142,100 </td><td colspan=1 rowspan=1 > 321 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 10 </td><td colspan=1 rowspan=1 > Wrexham </td><td colspan=1 rowspan=1 > 135,600 </td><td colspan=1 rowspan=1 > 269 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 11 </td><td colspan=1 rowspan=1 > Powys </td><td colspan=1 rowspan=1 > 132,500 </td><td colspan=1 rowspan=1 > 25 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 12 </td><td colspan=1 rowspan=1 > Vale of Glamorgan </td><td colspan=1 rowspan=1 > 130,700 </td><td colspan=1 rowspan=1 > 394 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > Pembrokeshire </td><td colspan=1 rowspan=1 > 124,700 </td><td colspan=1 rowspan=1 > 77 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > Gwynedd </td><td colspan=1 rowspan=1 > 123,700 </td><td colspan=1 rowspan=1 > 48 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > Conwy </td><td colspan=1 rowspan=1 > 116,900 </td><td colspan=1 rowspan=1 > 103 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > Denbighshire </td><td colspan=1 rowspan=1 > 95,200 </td><td colspan=1 rowspan=1 > 113 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 17 </td><td colspan=1 rowspan=1 > Monmouthshire </td><td colspan=1 rowspan=1 > 93,600 </td><td colspan=1 rowspan=1 > 110 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 18 </td><td colspan=1 rowspan=1 > Torfaen </td><td colspan=1 rowspan=1 > 92,300 </td><td colspan=1 rowspan=1 > 734 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 19 </td><td colspan=1 rowspan=1 > Ceredigion </td><td colspan=1 rowspan=1 > 73,100 </td><td colspan=1 rowspan=1 > 40 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 20 </td><td colspan=1 rowspan=1 > Isle of Anglesey </td><td colspan=1 rowspan=1 > 69,800 </td><td colspan=1 rowspan=1 > 98 </td><td colspan=1 rowspan=1 > County </td></tr>
<tr> <td colspan=1 rowspan=1 > 21 </td><td colspan=1 rowspan=1 > Blaenau Gwent </td><td colspan=1 rowspan=1 > 69,600 </td><td colspan=1 rowspan=1 > 640 </td><td colspan=1 rowspan=1 > County borough </td></tr>
<tr> <td colspan=1 rowspan=1 > 22 </td><td colspan=1 rowspan=1 > Merthyr Tydfil </td><td colspan=1 rowspan=1 > 60,000 </td><td colspan=1 rowspan=1 > 537 </td><td colspan=1 rowspan=1 > County borough </td></tr>
</table>
Question:
What are the two most populous areas in Wales?
Answer:
Swansea is the second most populous area in Wales, after Cardiff.