Use USPS delivery-address guidance
USPS Business Mail 101 recommends simple type, all capitals, left alignment and at least 10-point text for its delivery-address guidance. It also calls for black ink on white or light paper. Use that reading-oriented starting point instead of choosing only by a decorative sample.
Keep the line structure clear
The same USPS page separates the name or attention line, company, delivery address and city-state-ZIP line. It explains that processing machines read from the bottom and that unrelated information below the delivery address can cause confusion. Keep slogans and logos outside that critical sequence.
Keep label placement usable
USPS advises placing labels straight and avoiding clipped information. Its window-envelope guidance calls for clearance around the visible address. A carefully selected family cannot compensate for a suite number that falls behind a window or a label that cuts off the last digits.
Treat family examples as comparisons
Compare ordinary sans-serif choices using the full longest address, including numbers and apartment information. Keep the same size and available width when comparing. Use the label-font collection for design examples while preserving postal requirements for the actual mailing.
Your questions, answered.
Should address labels use ornate invitation lettering?
USPS warns that fancy fonts may not read well on automated equipment. Keep delivery information simple and clear.
Is choosing a readable family the only concern?
No. Line order, contrast, placement and complete visible information also matter.
Sources & background
Sources supporting this page’s explanations. Practical examples are our editorial suggestions.