[ Version ( since = "0.5.0" ) ]
public string region { get; set; }
A state, province, county (in Ireland), Land (in Germany), departement (in France), etc.
For more information, see the <ulink type="http" url="http://code.google.com/apis/gdata/docs/2.0/elements.html#gdStructuredPostalAddress">GData specification</ulink>.