The town that the property is located in.

Multiple Selections:
To select more than one town, control-click each town (command-click on a Mac). Select All to include all towns.

Resizing:
You can drag the resize handle in the lower right corner of the shaded box in order to resize the list.

Tip:
In some browsers, you can type the name of the town, and the list will automatically scroll to that item.