The standard postcard size is 4” x 6” or 5 x 7”. (For marketing purposes, there's a real advantag...

Standard flat postcards come in the following sizes: 4.25” x 5.5”, 4” x 6”, 4.25” x 6”, 5” x 7”, ...

Q: What are the postcard sizes that can be mailed in bulk and those that comply with the mailing ...

A: For flat standard postcards, available sizes are as follows: 4" x 6", 4.25" x 6", 5" x 7", 5.5...

The standard postcard size in the US is 5.8 x 4.2 inches, which is the equivalent of A6 and is br...

Although the general consensus is that the dimensions of an international standard postcard are A...