Download the regional atlas maps showing the squares
- Region 1. Essex
- Region 2. Chatham-Kent
- Region 3. Lambton
- Region 4. Middlesex-Elgin
- Region 5. Norfolk
- Region 6. Huron-Perth
- Region 7. Waterloo
- Region 8. Bruce
- Region 9. Grey
- Region 10. Halton
- Region 11. Niagara
- Region 12. Toronto
- Region 13. Simcoe
- Region 14. Kawartha
- Region 15. Hamilton
- Region 16. Peterborough
- Region 17. Northumberland
- Region 18. Muskoka
- Region 19. Haliburton
- Region 20. Prince Edward
- Region 21. Kingston
- Region 22. Leeds and Grenville
- Region 23. Cornwall-Hawkesbury
- Region 24. Ottawa
- Region 25. Silver Lake
- Region 26. Renfrew
- Region 27. Algonquin
- Region 28. Parry Sound
- Region 29. North Bay
- Region 30. Nipissing West
- Region 31. Sudbury East
- Region 32. Sudbury West
- Region 33. Manitoulin
- Region 34. Blind River
- Region 35. Sault Ste Marie
- Region 36. Algoma
- Region 37. Marathon
- Region 38. Thunder Bay
- Region 39. Kenora
- Region 40. Rainy River
- Region 41. Timiskaming
- Region 42. Cochrane
- Region 43E. Hudson Bay Lowlands (eastern portion)
- Region 43W. Hudson Bay Lowlands (western portion)
- Region 44E. Big Trout Lake (eastern portion)
- Region 44W. Big Trout Lake (western portion)
- Region 45. York
- Region 46. Durham
- Region 47. Wellington