| Ontario | |
|---|---|
| County Number | 52 |
| Postal abbr. | ON |
| Capital | Toronto |
| Nickname | Yours to Discover, The Heartland Province |
| ISO | CA-ON |
| FIPS | CA08 |
| Name | County | Postal Code |
|---|---|---|
| South Glengarry | 3501 | K6H K6K |
| Beamsville | 3526 | L0R |
| Bright's Grove | 3538 | N0N |
| Port McNicoll | 3543 | L0K |
| Consecon | 3513 | K0K |
| Greely | 3506 | K4P |
| Holland Landing | 3519 | L9N |
| Virginiatown | 3554 | P0K |
| Ashton | 3506 | K0A |
| Nanticoke | 3528 | N0A |
| Name | State |
|---|---|
| Ottawa | Ontario |
| Rainy River | Ontario |
| Hastings | Ontario |
| Haldimand-Norfolk | Ontario |
| Toronto | Ontario |
| Lambton | Ontario |
| Oxford | Ontario |
| Huron | Ontario |
| Hamilton | Ontario |
| Middlesex | Ontario |
| Lennox and Addington | Ontario |
| Thunder Bay | Ontario |
| Prescott and Russell | Ontario |
| Peterborough | Ontario |
| Cochrane | Ontario |
| Essex | Ontario |
| Brant | Ontario |
| Chatham-Kent | Ontario |
| Manitoulin | Ontario |
| Sudbury | Ontario |