This page lists all of the numbered county roads in Middlesex County, Ontario.
Note: when London became a separated municipality and absorbed several nearby townships, the County Road designations for them disappeared, rendering them numberless. Many roads such as CR 37 (Highland Avenue) are now named only.
Many roads in Middlesex County were also formerly provincial highways, such as Highbury Avenue from Highway 401 (Exit 189) to current CR 2 (Formerly Highway 2), also known as the Wenige Expressway, and Exeter Road (Former Highway 135), turned back after Highway 402 was completed and rendered the road obsolete. Airport Road (Now named "Veterans Memorial Parkway", also Former Highway 100, a proposed beltway around London.. The other former highways were Highway 22, Highway 80, and Highway 81 (oddly enough, Highway 402 rendered Highways 22 and 81 obsolete upon its completion in 1981 as well. The reason for this somewhat high concentration of former provincially-controlled roads in this county is due to London's size (roughly 340,000), as it is the anchor for Southwestern Ontario, and Middlesex County, Ontario is geographically quite large (by southern Ontario standards), and is quite important due to agriculture in the area.
| Number | Names | Western/Southern Terminus | Eastern/Northern Terminus | Major Communities | Comments |
|---|---|---|---|---|---|
| 1 | Hagerty Road | Limerick Road (Boundary with Lambton County | Thames River (Boundary with Elgin County) | Wardsville, Ontario, Newbury, Ontario | Continues as Elgin CR 103 |
| 2 | Longwoods Road, Wharncliffe Road, Dundas Street | Middlesex CR 14/Chatham-Kent CR 121 (Continues as Chatham-Kent CR 2) | Oxford County boundary (continues as Oxford CR 2) | Wardsville, Ontario, Melbourne, Ontario, Delaware, Ontario, Lambeth, Ontario, London, Ontario, Nilestown, Ontario, Dorchester, Ontario | Formerly Highway 2, has a concurrency with Highway 4 in London |
| 3 | Gideon Drive | CR 2 | London, Ontario City limits | Delaware, Ontario, Kilworth, Ontario, London, Ontario | Passes by the Komoka Provincial Park |
| 4 | Hamilton Road | Thames River | CR 29 | London, Ontario | No longer signed. |
| 5 | Greenway Drive, Grand Bend Road, Mount Carmel Drive | Ausable River (Boundary with Lambton County, continues as Lambton CR 5) | Highway 4 | Greenway, Ontario, Corbett, Ontario, Mount Carmel, Ontario | Brief concurrency with CR 81 (Former Highway 81) for around 1 km, acts as the boundary with Perth County. |
| 6 | Kerwood Road | CR 10 | CR 7 | Keyser, Ontario, Kerwood, Ontario | |
| 7 | Elginfield Road | Ausable River (Boundary with Lambton County, continues as Lambton CR 6) | Intersection with Highway 4 and Highway 7 | Parkhill, Ontario, Ailsa Craig, Ontario, Elginfield, Ontario | Formerly part of Highway 7, until all parts west of Highway 4 were turned back in 1998. |
| 8 | Thames Road | Thames River (Boundary with Elgin County, continues as Elgin CR 8) | CR 6 | Ekfrid, Ontario, Appin, Ontario | |
| 9 | Melbourne Road, Metcalfe Street | CR 39 | Thames River (Boundary wit Elgin County, continues as Elgin CR 14) | Melbourne, Ontario, Longwood, Ontario, Strathroy, Ontario | |
| 10 | Conservation Road, Gore Road, Calvert Drive | CR 80 | CR 9 | Briefly acts as the boundary with Lambton County | |
| 10 (Original) | Robin's Hill Road (Formerly Wager Road) | CR 25 | CR 27 | London, Ontario, London International Airport, Fanshawe Conservation Area | |
| 11 | Muncey Road | Muncey, Ontario | CR 2 | Muncey, Ontario | Formerly continued along River Road to the Elgin County boundary, where it would continue as Elgin CR 20. |
| 12 | Townsend Line | Lambton County line, continues as Lambton CR 12 | CR 81 | Keyser, Ontario | |
| 13 | William Street, Alice Street | CR 20 | CR 47 | Lucan, Ontario | Acts as a short connector to CR 20 from Lucan. |
| 14 | Glendon Drive | Thames River (Boundary with Elgin County, continues as Elgin CR 7/Chatham-Kent CR 121) | London City Limits | Newbury, Ontario, Appin, Ontario, Longwoods, Ontario, Glencoe, Ontario, Mount Brydges, Ontario, Komoka, Ontario, Kilworth, Ontario | Briefly acts as the boundary between Chatham-Kent and Middlesex County |
| 15 | Carriage Road | CR 17 (Boundary with Elgin County) | |||
| 16 | Komoka Road, Poplar Hill Road, Ilderton Road, 12 Mile Road, Plover Mills Road | CR 3 | Oxford County line (Continues as Oxford CR 25) | Komoka, Ontario, Poplar Hill, Ontario, Ilderton, Ontario, Plover Mills, Ontario | Travels northwest-southeast to Poplar Hill, then roughly east-west to Oxford County, has a concurrency with CR 20 for around 2 km, and with CR 27 for around 4 km. |
| 17 | Nairn Road, Gainsborough Road | CR 7 | London city limits | Parkhill, Ontario (2 km to the north, along CR 7), Nairn, Ontario, Lobo, Ontario, Lobo Siding, Ontario, London, Ontario | Not related to Elgin CR 17, which is the border with Elgin County, in Southwold, Ontario, near London, Ontario |
| 18 | Parkhill Drive | Ausable River (Boundary with Lambton County) | CR 81 | Parkhill, Ontario | Not to be confused with Elgin CR 18, which acts as boundary between Middlesex and Elgin Counties. |
| 20 | Hyde Park Road, Ilderton Road, Denfield Road | London city limits]] | Highway 4 | London, Ontario, Ilderton, Ontario | Has a 2 km concurrency with CR 16. Formerly CR 22, until Highway 22 was downloaded in 1998, and was re-numbered. |
| 21 | Cassidy Road | CR 7 | CR 24 | Travels through no towns, acts as a connecting link between CR 7 and CR 24 | |
| 22 | Egremont Drive, Fanshawe Park Road | Sexton Road (Boundary with Lambton County, continues as Lambton CR 22) | London City Limits | Adelaide, Ontario, Strathroy, Ontario, Hickory Corner, Ontartio, Poplar Hill, Ontario, Lobo, Ontario, Melrose, Ontario, London, Ontario | Section between London and Strathroy is extremely busy and congested, and only two-lanes. Whole route was formerly Highway 22. |
| 23 | Highbury Avenue | Intersection with CR 28 | Highway 7 | Ballymote, Ontario | |
| 24 | McGillivray Drive | CR 81 | Highway 4 | Moray, Ontario, West McGillivray, Ontario | Connects two major routes, Highway 4 and CR 81 (Former Highway 81) |
| 25 | Crumlin Road, Crumlin Sideroad | Gore Road | London International Airport | London, Ontario | No longer signed? |
| 26 | Wilton Grove Road | London City Limits | CR 74 | London, Ontario | Less than 500 meters in length. Formerly extended to Interchange with Highway 135 (Exeter Road) and Highway 401 (Exit 186)). Formerly travelled down a brief segment of Wellington Road to the interchange. Formerly numbered as CR 37. |
| 26 (Original) | Boler Road, Southdale Road | London City Limits (just north of Southdale Road) | CR 43 | London, Ontario | No longer signed. |
| 27 | Nissouri Road, Plover Mills Road, Wellburn Road | CR 2 | Highway 7 (Boundary with Perth County) | Wellburn, Ontario | Has a 4 km concurrency with CR 16 |
| 28 | Medway Road, Thorndale Road, King Street | CR 20 | Cobble Hills Road (boundary with Oxford County, continues as Oxford CR 16) | Arva, Ontario, Ballymote, Ontario, THorndale, Ontario, Cobble Hill, Ontario | Skirts the northern edge of London, Ontario |
| 29 | Hamilton Road | London city limits | Oxford County boundary, continues as Oxford CR 9 | London, Ontario, Nilestown, Ontario, Dorchester, Ontario, Putnam, Ontario | Brief concurrency with CR 32 |
| 30 | Putnam Road | Avon Drive (Elgin CR 45, boundary with Elgin County. Continues as Elgin CR 47) | Thames River (Boundary with Oxford County, continues as Oxford CR 45) | Putnam, Ontario | |
| 31 | Heritage Road | CR 28 | CR 16/27 | Friendly Corners, Ontario | |
| 31 (Original) | Fanshawe Park Road | Intersection with CR 23 and Former Highway 22 | Fanshawe Conservation Area | London, Ontario, Fanshawe, Ontario | No longer signed, incorporated into CR 22 |
| 32 | Dorchester Road, Hamilton Road, Bridge Street, Catherine Street, Shaw Road | Interchange with Highway 401 (Exit 199) | CR 2 | Dorchester, Ontario | Brief concurrency with CR 29, 4 km concurrency with CR 49 |
| 34 | Highbury Avenue, Webber Bourne | CR 2 | Elgin CR 30 on the border with Elgin County (Continues as Elgin CR 30). | London, Ontario | Very busy, freeway from north of Highway 401 (Exit 189), to Hamilton Road. Unknown if it is still signed as such. Formerly routed briefly along Hubrey Road until Highbury Avenue was extended. |
| 35 | Littlewood Drive, Westdel Bourne, Glanworth Drive | CR 15 | Highway 4 | Littlewood, Ontario, Tempo, Ontario, London, Ontario | Formerly extended to Highway 74 in Belmont, Ontario. |
| 38 | Vanneck Road | CR 14 | CR 22 | Kilworth, Ontario, Lobo Siding, Ontario | Basically, a spur of CR 14. Previously ended at CR 17, extended northward to CR 22 in 2007. |
| 39 | Napperton Drive, Albert Street, Metcalfe Street, Hickory Drive | Sexton Road (Boundary with Lambton County, continues as Lambton CR 39) | CR 22 | Napperton, Ontario, Strathroy, Ontario, Hickory Corner, Ontario | Basically a continuation of Lambton CR 39 |
| 41 | Adelaide Street | London City Limits | CR 16 | London, Ontario | |
| 42 | Clarke Road | London City Limits | Intersection with CR 28 | London, Ontario, Ballymote, Ontario | |
| 43 | White Oak Road, Scotland Drive | Glanworth Drive (Middlesex CR 35) | Southdale Road/London city limits | Glanworth, Ontario, London, Ontario | No longer signed |
| 44 | Victoria Street | CR 9 | CR 81 | Strathroy, Ontario | Offers a diversion from CR 81 to CR 9, and eventually CR 10 or CR 2 |
| 46 | Westdel Bourne | Longwoods Road (Middlesex CR 2, Former Highway 2) | Oxford Street (Middlesex CR 14) | London, Ontario | No longer signed |
| 47 | Saintsbury Line, Fallon Drive | Highway 4 | Highway 23 | Lucan, Ontario | |
| 49 | Catherine Street | London city limits | CR 73 | Nilestown, Ontario, Dorchester, Ontario | Has a 4 km concurrency with CR 32 |
| 50 | Prospect Hill Road | Highway 7 | Whalen Line (Boundary with Perth County, continues as Perth CR 139) | Prospect Hill, Ontario | Short county road |
| 51 | Sarnia Road | CR 20 | London city limits | Hyde Park, Ontario, London, Ontario | No longer signed. |
| 52 | Wonderland Road | Exeter Road | CR 26 (Southdale Road) | London, Ontario | No longer signed. |
| 54 | Base Line Road (Now Byron Baseline Road) | Westdel Bourne (Middlesex CR 46) | Wickerson Road | London, Ontario | No longer signed. |
| 55 | Roxburgh Road, Castleton Road | CR 37 | Dingman Drive | London, Ontario | No longer signed. |
| 56 | Wonderland Road | London city limits | CR 28 | London, Ontario | Very short county road |
| 59 | Granton Line | Intersection of Highway 7 and CR 23 | |||
| 73 | Elgin Road | Avon Drive (Elgin Road 37, boundary with Elgin County. Continues as Elgin CR 73) | CR 2 | Three Bridges, Ontario, Dorchester, Ontario, Mossley, Ontario, Harrietsville, Ontario | Portions south of CR 29 were Former Highway 73, which was turned back on January 1, 1998 |
| 74 | Westchester Bourne | 7th Avenue (Boundary with Elgin County, continues as Elgin CR 74) | CR 49 | Nilestown, Ontario, Derwent, Ontario, Belmont, Ontario (on the other side of the Elgin County line) | Portions south of CR 29 were formerly Highway 74, turned back April 1, 1997 |
| 80 | Dundonald Road, Courtright Line | Lambton County boundary (Continues as Lambton CR 80) | CR 2 | Glencoe, Ontario | Formerly Highway 80, turned back in 1998 |
| 81 | Adelaide Road, Caradoc Street, Victoria Street, Center Road, Elginfield Road, Main Street, Grand Bend Road | CR 2 | CR 5 (Boundary with Perth County, continues as Perth CR 81 | Delaware, Ontario, West Delaware, Ontario, Mount Brydges, Ontario, Caradoc, Ontario, Strathroy, Ontario, Parkhill, Ontario, Corbett, Ontario, Greenway, Ontario | Formerly Highway 81. Has a brief concurrency with CR 7. |
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