The closest association information is available in PDF format as a Reference Matrix or as an Association Reference. To find out the Closest Association Matrix for a particular Association click on the Association name below.
| Chatham | Dorchester | Elora-Fergus | Exeter/Seaforth | Forest |
| Goderich | Guelph | Hanover | Kitchener | London |
| Mitchell | Owen Sound | St. Clements | St. Marys | St. Thomas |
| Tilsonburg | Waterloo | Wellington North | Woolwich |
The above information has been defined using Google Maps (March 2018) going from City Hall to City Hall.
Western Region has adopted this as the standard for interpretation of "closest association" insuring consistent application across all potential player movement.