Question 1

How is the postal code built?

Accepted Answer

The first three characters are a real forward sortation area for that city — M5H for downtown Toronto, V6B for Vancouver — and the last three are generated. The letters D, F, I, O, Q and U are excluded throughout, because Canada Post never uses them: they are too easily confused with digits or with one another when a machine reads them.

Question 2

Are Canadian phone numbers reserved separately from US ones?

Accepted Answer

No. Canada and the United States share the North American Numbering Plan, so the same 555-0100 to 555-0199 block is the reserved fictional range in both countries. Only the area code differs — 416 for Toronto, 604 for Vancouver and so on.

Question 3

Which address format does Canada use?

Accepted Answer

The same street-then-city layout as the United States, with the province abbreviation and the postal code on the city line. Canada Post prefers the whole address in capitals without punctuation on posted mail, but the mixed-case version shown here is what most web forms expect.