Rectangular, at least 3 1⁄2 inches (88.9 mm) high × 5 inches (127 mm) long × 0.007 inches (0.178 mm) thick and no more than 4 1⁄4 inches (108 mm) high × 6 inches (152.4 mm) long × 0.016 inches (0.406 mm) thick.
The United States Postal Service defines a postcard as: rectangular, at least 3 1⁄2 inches (88.9 mm) high × 5 inches (127 mm) long × 0.007 inches (0.178 mm) thick and no more than 4 1⁄4 inches (108 mm) high × 6 inches (152.4 mm) long × 0.016 inches (0.406 mm) thick. To qualify for postcard pricing, your mailer must be at least 3 ½” high, 5” long and 0.007” thick (approximately the thickness of an index card), but no more than 4 ¼” high, 6” long, or 0.016” thick. To qualify for the base rate, postcards cannot be folded. All measurements are in inches. These are standard postcard sizes. Check with United States Post Office before mailing. Designers Toolbox is not responsible for errors. Opening the downloaded files. You will need the Free StuffIt Expander utility installed on your computer to open the .zip files. The USPS considers a postcard to be any single rectangular piece of paper that is at least 3 1/2 inches high by 5 inches long by 0.007 inch thick' and no more than 4-1/4 inches high by 6 inches long by 0.016 inches thick.. The post office considers all papers outside of these dimensions to be letters. Content Filter: Safe. Change. You are browsing through zazzle's Us Post Office postcards section where you can find many unique Us Post Office postcards available for customization or ready to buy as is. There is no minimum order size and many postcard designs can be customized with your own artwork, photos, and text. Standard Postcard-a standard postcard mails First Class at current rate of 35¢. The smallest maiLabel size for ANY postcard is 3½″ x 5.″. The largest postcard size for mailing at the 35¢ rate is 4¼″ x 6.″. The paper thickness must be at least 0.007 ″ and not more than 0.016 ″ in thickness. Content Filter: Safe. Change. You are browsing through zazzle's Post Office postcards section where you can find many unique Post Office postcards available for customization or ready to buy as is. There is no minimum order size and many postcard designs can be customized with your own artwork, photos, and text.
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size of postcards for us post office