This is a list of numbered roads in the United Counties of Stormont, Dundas and Glengarry, Ontario.
County Road # Local name(s) Southern/Western Terminus Northern/Eastern Terminus Settlements served Additional Notes 1 Carman RoadMountain RoadReids Mills Road Belmeade Road Boat House Road Iroquois, Haddo, Hainsville, Glen Stewart, Pleasant Valley, South Mountain, Mountain, Hallville, Reids Mills 2 County Road 2 Hallecks Road Quebec border(continues as Quebec Route 338) Iroquois, Morrisburg, Ingleside, Long Sault, Lakeview Heights, Glen Walter, Summerstown, South Lancaster Formerly ; route interrupted by non-existence within Cornwall city limits 3 County Road 3 Boundary Road County Road 7 South Mountain, Baldwins Bridge, Vinegar Hill, Inkerman Station, Winchester, The Ninth 4 Lakeshore Drive County Road 2 County Road 31 Morrisburg 5 Oak Valley Road County Road 16 County Road 31 Oak Valley, Winchester Springs 6 County Road 6 Finch-Cambridge Boundary Road County Road 15 none minor rural route 7 County Road 7Dunbar Road County Road 31 Marionville Road Elma, Dunbar, Chesterville, The Ninth, Morewood 8 Church Road County Road 2 County Road 7 Orchardside, Hoasic, Froatburn 9 Smith RoadBerwick Road County Road 43 County Road 15 Chesterville, Berwick 10 Glen Robertson Road County Road 34 Quebec border Alexandria, Glen Robertson 11 County Road 11 County Road 18 County Road 43 Bush Glen, Grantley 12 County Road 12 County Road 2 Finch Concession 10-11 Road Lunenburg, Newington, Finch, Berwick, Crysler shares roadway with County Road 14 on section extending southwest of Newington 13 Morewood RoadLa Freniere Road County Road 31 County Road 6 Crysler, North Winchester, Morewood 14 County Road 14 County Road 2 County Road 43 Ingleside, Osnabruck Centre, Newington shares roadway with County Road 12 on section extending southwest of Newington 15 Avonmore RoadMcLean Road County Road 2 King's Highway 138 Valley Corners, Lodi, Avonmore, Northfield, Harrisons Corners, Lakeview Heights 16 Brinston Road County Road 2 County Road 3 Stampville, Dixons Corners, Brinston, Hulbert, Baldwins Bridge 17 County Road 17 County Road 27 County Road 34 MacGillivrays Bridge, Williamstown, Lancaster 18 Glen Stewart RoadCook RoadDundela RoadKing's Road Byker Road Quebec border Glen Stewart, Hainsville, Dixons Corners, Dundela, Williamsburg, Hoasic, Osnabruck Centre, Lunenburg, Harrisons Corners, St. Andrews, Martintown, St. Raphaels 19 County Road 19 South Branch Road County Road 18 Grants Corners, Williamstown 20 Kinloch RoadApple Hill RoadHighland Road County Road 19 Highway 417 Martintown, Apple Hill, Dominionville, Maxville, St. Elmo 21 Lochiel RoadLorne School RoadGlen Sandfield RoadSte.-Anne Road County Road 34 Hope-Ouimet Road Lochiel, Lorne, Glen Sandfield 22 Dyer Road King's Highway 138 County Road 30 Dyer, Maxville 23 4th LineDalhousie RoadDalkieth Road County Road 2 Highway 417 Curry Hill, Bridge End, Dalhousie Mill, Glen Robertson, Glen Sandfield, Dalkieth, Breadalbane route interrupted by Quebec territory for 2.8 km (1 miles) around Dalhousie Station, QC 24 Laggan-Glenelg RoadLaggan Road County Road 34 Quebec border Stewarts Glen, Dunvegan, Fiskes Corners, Laggan, Kirkhill, Dalkieth 25 County Road 25Concession Road 9 County Road 20 County Road 23 Glenroy, Green Valley, Glen Norman 26 2nd Line Road County Road 2 County Road 18 North Lancaster Station 27 Summerstown Road County Road 2 County Road 18 Summerstown station, MacGillivrays Bridge 28 Glen Becker Road County Road 31 County Road 8 Glen Becker 29 County Road 29 County Road 12 County Road 15 none minor rural route 30 Greenfield Road County Road 43 Highway 417 Dunvegan, Baltics Corners, Greenfield 31 County Road 31 County Road 4 Marionville Road Morrisburg, Glen Becker, Williamsburg, Winchester Springs, Cloverdale, Harmony Continues north to Ottawa as . Formerly . 32 County Road 32 County Road 13 Marionville Road Cannamore 33 Power Dam Drive Cornwall Centre Road County Road 36 Cornwall Centre 34 County Road 34 County Road 2 Highway 417 Lancaster, Green Valley, Alexandria, Laggan 35 Moulinette Road County Road 2 County Road 29 Long Sault 36 Milles Roches RoadPost Road County Road 2 County Road 18 Long Sault 37 Queen Street County Road 43 County Road 7 Chesterville 38 Holmes RoadSt. Lawrence Street County Road 3 County Road 3 Winchester 39 Duncan Street County Road 34 County Road 2 Lancaster 40 Stampville Road County Road 5 County Road 28 Stampville 41 Upper Canada Road County Road 8 County Road 2 none contains former St. Lawrence Parks Commission Upper Canada Road uploaded in June, 2016 42 McConnell Avenue South Branch Road Headline Road none minor suburban route 43 County Road 43 Boundary Road County Road 34 Hallville, Mulloys, Maple Ridge, Chesterville, Finch, Avonmore, Monkland, Alexandria 44 Headline Road King's Highway 138 County Road 19 none minor rural route 45 Kenyon Dam RoadKenyon Concession Road County Road 43 County Road 34 none minor rural route 46 MacDonald BoulevardMacDougald Street West County Road 43 County Road 34 Alexandria