# List of numbered roads in Grey County

This is a list of numbered county roads in Grey County, Ontario.
| Local Name(s) | Southern/Western Terminus | Northern/Eastern Terminus | Settlements served | Additional Notes |
| County Road 1 | 10th Street, Owen Sound | Bruce County line | Owen Sound, Balmy Beach, East Linton, Hogg, Big Bay, Oxenden | |
| County Road 2 | Melancthon-Osprey Townline | Highway 26 | Victoria Corners, Ravenna, Kolapore, Feversham, Maxwell | |
| County Road 3 | Minto-Normanby Townline | Highway 21 | Ayton, Lamlash, Louise, Peabody, Keady, Jackson | |
| County Road 4 | Bruce County line | Simcoe County Road 124 | Hanover, Allan Park, Vickers, Durham, Glen, Priceville, Ceylon, Flesherton, Rock Mills, Maxwell | a.k.a. 10th Street in Hanover, Bruce Street and Lambton Street in Durham, and Collingwood Street in Flesherton, formerly Ontario Highway 4 |
| 28th Avenue 8th Street 2nd Avenue County Road 5 | Grey - Bruce Line (County Line with Bruce County) | Highway 26 | Owen Sound | |
| County Road 6 | Highway 89 | Highway 6 | none | minor connecting route |
| County Road 7 | County Road 13 | Highway 26 | Epping, Griersville, Kent, Meaford | |
| County Road 8 | Highway 89 | County road 9 | none | minor rural route |
| Queen Street County Road 9 Main street | County Road 10 | Highway 10 | Neustadt, Ayton, Nenagh, Orchardville, Hopeville, Dundalk | |
| County Road 10, Grey-Bruce Line | Wellington County limits | Highway 6 | Hepworth, Park Head, Alvanley, Scone, Elmwood, Hanover, Neustadt, Moltke, Biemans Corners | Grey Road 10 from the Wellington County Boundary to Grey Road 28, Jacob Street in Neustadt, 7th Avenue in Hanover, Signed as Bruce Road 10 between Hanover and Scone but under the jurisdiction of Grey County, Grey-Bruce Line between Scone and Alvanley, and Bruce Road 10 between Alvanley and Hepworth. |
| County Road 11 | County Road 18 | Highway 26 | none | minor rural route |
| County Road 12 | Highway 6 | Highway 26 | Meaford, Oxmead, Temple Hill, Goring, Markdale, Barhead, Waudby | a.k.a. Nelson Street in Meaford and Main Street in Markdale |
| County Road 13 | County Road 4 | Highway 26 | Thornbury, Clarksburg, Slabtown, Heathcote, Kimberley, Eugenia | |
| County Road 14 | Highway 89 | County Road 4 | Hopeville, Gildale, Cedarville, Conn | |
| County Road 15 | County Road 5 (6th St E) | Highway 26 | Owen Sound, Leith, Annan | |
| County Road 16 | Grey-Bruce Line | Highway 6 | Keady | |
| Gordon Sutherland Parkway County Road 17 | County Road 17B | Highway 6 | Benallen, Copperkettle, Wolseley, Zion | |
| County Road 17A | County Road 17 | County Road 1 | none | minor connecting route |
| Derby-Sarawak Townline | Highway 6 | Highway 21 | Owen Sound | |
| Concession 5 Derby Derry Line 1st Concession | Highway 21 | Highway 26 | Springmount, Squire, Rockford, Woodford | |
| County Road 19 | County Road 2 | Highway 26 | Castle Glen, McMurchy Settlement, Craigleith | |
| Osler Bluff Road | County Road 19 | Highway 26 | Mair Mills | |
| County Road 23 | County Road 4 | County Road 9 | Glen, Dromore | |
| County Road 25 | Grey-Bruce Line | Highway 6 | Dornoch | |
| Durham Road West | County Road 4 | Highway 6 | Durham | |
| Concession 2 Drive In Road Concession 18 | County Road 10 | County Road 10 | none | Hanover suburban route |
| County Road 29 | County Road 40 | County Road 18 | Bognor, Walters Falls | |
| County Road 30 | County Road 12 | County Road 13 | Hutchisons Corners | |
| County Road 31 | County Road 2 | Simcoe County line | Rob Roy | |
| County Road 32 | Highway 10 | County Road 30 | Vandeleur | |
| County Road 40 | Grey-Bruce Line | Highway 26 | Chatsworth, Desboro, Marmion | a.k.a. McNab Street in Chatsworth |
| County Road 109 | County Road 6 | County Road 9 | Holstein | |
| 9th Line | County Road 12 | Central Area Army Training Centre | none | service road to National Defence facility |
| Alfred Street West | County Road 13 | Highway 26 | Thornbury | |
| Grey Road 119, Scenic Caves Road | County Road 13 | County Road 19 | Craigleith | |
| County Road 124 | Melancthon-Osprey Townline / Dufferin County line | Simcoe County Road 124 | Maple Valley, Singhampton | Formerly Highway 24. Runs concurrently with Simcoe County Road 124 |
| County Road 170 Cruikshank Street | Highway 6 | County Road 17 | Copperkettle, Shouldice, Shallow Lake | |