Canada Post offers free postal code lookups on its website. Users can find the postal code by typing the Canadian address, rural route, General Delivery, civic number or P.O. Box in its Find a Postal Code search box.
The service is offered free for personal use, but businesses are allowed only a limited number of lookups. Businesses that perform frequent lookups may find the feature restricted and have to contact Canada Post to reactivate access. The site also does reverse lookups under Find an Address, where the user can look up an address using a Canadian postal code. Users also have the option to report errors through the website.