Abstract: There is disclosed a self service postal apparatus and method printing postage useable for sorting packages and other postal articles. On entering or dialing the zip code of the addressee a display of the geographic location thereof assures the user that the zip code number is accurate and it may, if desired, activate a computer to compute the postage due. After the customer pays the computed postage, the postage with the zip code of addressee therewith may be printed on the package or label in machine readable form useable for automatic mail sorting.