A good US postal address example will include the full name of the recipient in the first line, as well as the city and state. It should also include a two-letter state abbreviation, zip code, and country name. In contrast, a Canadian postal address example is relatively simple, with the recipient's name in the first line and the street in the second line. The postal code, in addition to the country and province, appears on the third line.
If you're unfamiliar with how a US postal address is formatted, you can look at an example. It's the part with the street address and zip code. If you want to write your address in English, the first line is your name, followed by a dash. If you want to write a postal address in another language, the last line should contain your country's flag. This format is used for addresses throughout the world.
Next, you'll need to include the five-digit ZIP code. These are the most important parts of a US postal address, since they're required by law. You may not have known this, but it happens a lot. If you've lived at a PO Box for years, it's likely that the US Postal Service doesn't have the same address as you. You'll want to double-check to make sure your address is correct. Missing directionals can disrupt your mail delivery.