| Postal Code | L1B 0P3 |
| City | Newcastle |
| Province | Ontario (ON) |
| Coordinates | 43.9192000, -78.5817000 |
| Population | 53 |
| FSA (Forward Sortation Area) | L1B |
| LDU (Local Delivery Unit) | 0P3 |
| Country | Canada |
Located in Ontario, Canada is home to the sparsely populated community of Newcastle, served by postal code L1B 0P3.
Newcastle has a reported population of 53. This is roughly in line with the Ontario average of about 47 residents.
Nearby communities in Ontario include Kleinburg, Schomberg.
The postal code for Newcastle, Ontario is L1B 0P3.
L1B 0P3 is located in Ontario, Canada.
The population of L1B 0P3 (Newcastle) is approximately 53 people.
L1B 0P3 is about average compared to the typical Ontario postal code, which averages around 47 people.
Postal code codes near L1B 0P3 include L0J 0A1, L0J 1C0, L0G 0A1.