[ Version ( since = "0.5.0" ) ]
public string subregion { get; set; }
Handles administrative districts such as U.
S. or U.K. counties that are not used for mail addressing purposes. Subregion is not intended for delivery addresses.
For more information, see the <ulink type="http" url="http://code.google.com/apis/gdata/docs/2.0/elements.html#gdStructuredPostalAddress">GData specification</ulink>.