| Postal Code | L3S 3A1 |
| City | Markham |
| Province | Ontario (ON) |
| Coordinates | 43.8425000, -79.2569000 |
| Population | 80 |
| FSA (Forward Sortation Area) | L3S |
| LDU (Local Delivery Unit) | 3A1 |
| Country | Canada |
L3S 3A1 is a sparsely populated postal code covering Markham in Ontario, Canada.
Census data puts the population of this postal code at 80 residents. That's noticeably above the average for a Ontario postal code, which sits near 47 people.
Nearby communities in Ontario include Kleinburg, Schomberg.
The postal code for Markham, Ontario is L3S 3A1.
L3S 3A1 is located in Ontario, Canada.
The population of L3S 3A1 (Markham) is approximately 80 people.
L3S 3A1 is more populated than the typical Ontario postal code, which averages around 47 people.
Postal code codes near L3S 3A1 include L0J 0A1, L0J 1C0, L0G 0A1.