Records Browser
| Census subdivision | Census division | Province | Year | Total population |
|---|---|---|---|---|
| Mono | Simcoe | ON | 1851 | 2689 |
| Montague | Lanark | ON | 1851 | 3356 |
| Moore | Lambton | ON | 1851 | 1258 |
| Mornington | Perth | ON | 1851 | 933 |
| Mosa | Middlesex | ON | 1851 | 2075 |
| Moulton | Haldimand | ON | 1851 | 1984 |
| Mountain | Dundas | ON | 1851 | 2764 |
| Mulmur | Simcoe | ON | 1851 | 766 |
| Murray | Northumberland | ON | 1851 | 3725 |
| Nassagaweya | Halton | ON | 1851 | 2237 |