Chris Evan
Here in the States, using a postal code is acquiescence to the Federal Jurisdiction. It is prima facie evidence that YOU have claimed DOMICILE in DC and are RESIDING in another State. I have sent thousands of pieces exactly like this:
John Doe 123 Main Street Peabody, Massachusetts
Some guys use [ ] around the Zip Code or write "Near", but it is not necessary. They way I write it is de jure and compliant with current Postage Regulation. ALL MY MAIL GETS WHERE I WANT IT TO!