| 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 |
|---|---|---|
| Conn | 3523 | N0G |
| Cedar Valley | 3519 | L0G L4A |
| Port Loring | 3549 | P0H |
| Greenbank | 3518 | L0C |
| Berwick | 3501 | K0C |
| Westport | 3507 | K0G |
| Angling Lake | 3560 | P0V |
| Lions Head | 3541 | N0H |
| Otterville | 3532 | N0J |
| Georgetown | 3524 | L7G |
| Name | State |
|---|---|
| Chatham-Kent | Ontario |
| Manitoulin | Ontario |
| Middlesex | Ontario |
| Simcoe | Ontario |
| Sudbury | Ontario |
| Bruce | Ontario |
| Leeds and Grenville | Ontario |
| Dufferin | Ontario |
| Halton | Ontario |
| Niagara | Ontario |
| Essex | Ontario |
| Lennox and Addington | Ontario |
| Thunder Bay | Ontario |
| Wellington | Ontario |
| Rainy River | Ontario |
| Toronto | Ontario |
| Brant | Ontario |
| Hastings | Ontario |
| Haldimand-Norfolk | Ontario |
| Prescott and Russell | Ontario |