This is a list of numbered county roads in Grey County, Ontario.
County Road # 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 Avenue8th Street2nd 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 9Main 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 ParkwayCounty 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 DerbyDerry Line1st 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 2Drive In RoadConcession 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 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 170Cruikshank Street Highway 6 County Road 17 Copperkettle, Shouldice, Shallow Lake
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