The address field has all the data (State, City, Country, ZipCode ect)
if its is not returning that means your setup of address needed to be fixed, and addresses' has to be update as per new setup.
Moreover, you can also get address part by part as under
display LogisticsAddressing primaryAddressByParts()
{
LogisticsPostalAddress lclLogisticsPostalAddress;
str retString;
lclLogisticsPostalAddress = this.findPrimaryAddress();
retString = strFmt('Steert: %1 City: %2 State: %3 ZipCode:%4 Country:%5',
lclLogisticsPostalAddress.Street
,lclLogisticsPostalAddress.City
,lclLogisticsPostalAddress.State
,lclLogisticsPostalAddress.ZipCode
,lclLogisticsPostalAddress.CountryRegionId
);
return retString ;
}