How do you access a directory of Canadian postal codes?

The Post Canada website at Canadapost.ca provides a search engine that gives postal codes for specific addresses. The website Postalcode.globefeed.com has a search engine plus a list of cities that users click to access maps that provide codes with or without exact addresses.

Wikipedia.org has a large database of Canadian postal codes. It has a color-coded map that shows letters corresponding to the provinces. If one clicks on R under MB for Manitoba, a page appears with the province of Manitoba's codes, which all begin with R. The postal codes for cities are listed in rows going down the page. Rural codes are in long lists at the bottom of each province's page.