U.S. Route 54 in Missouri
| US 54 highlighted in red | ||||
| Route information | ||||
| Maintained by MoDOT | ||||
| Length | 271.508 mi (436.950 km) | |||
| Existed | 1927–present | |||
| Major junctions | ||||
| West end | US-54 at the Kansas state line | |||
| 
 | ||||
| East end | US 54 at the Illinois state line | |||
| Location | ||||
| Country | United States | |||
| State | Missouri | |||
| Counties | Vernon, Cedar, St. Clair, Hickory, Camden, Miller, Cole, Callaway, Audrain, Ralls, Pike | |||
| Highway system | ||||
| 
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U.S. Route 54 (US 54) in Missouri is a west-east highway that runs between the Kansas state line in Nevada, Missouri and the Illinois state line in Louisiana, Missouri.