| Postal Code | K6J 3W4 |
| City | Cornwall |
| Province | Ontario (ON) |
| Coordinates | 45.0199000, -74.7320000 |
| Population | 20 |
| FSA (Forward Sortation Area) | K6J |
| LDU (Local Delivery Unit) | 3W4 |
| Country | Canada |
K6J 3W4 is a sparsely populated postal code covering Cornwall in Ontario, Canada.
Census data puts the population of this postal code at 20 residents. That's below the Ontario average of about 47 people per postal code.
Nearby communities in Ontario include Kleinburg, Schomberg.
The postal code for Cornwall, Ontario is K6J 3W4.
K6J 3W4 is located in Ontario, Canada.
The population of K6J 3W4 (Cornwall) is approximately 20 people.
K6J 3W4 is less populated than the typical Ontario postal code, which averages around 47 people.
Postal code codes near K6J 3W4 include L0J 0A1, L0J 1C0, L0G 0A1.