The postal code of Longueuil which is listed in our database is J4M 2X9. Our records often include geographical coordinates of Longueuil and it's corresponding postal code. In the result box below, you can find the postal code of Longueuil and it's location on the map if we have the location information available. Every postal code is also located in a region or a district, in case we know the district or region of the city it will too be listed in the results. All kinds of additional information we have on Longueuil may also be present such as geographical data, historical records or news about Longueuil and J4M 2X9 in general.