The following highways are numbered 231:
Canada edit
Costa Rica edit
India edit
Japan edit
Nigeria edit
United States edit
- U.S. Route 231
- Arkansas Highway 231
- California State Route 231 (former)
- Colorado State Highway 231
- Florida State Road 231
- Georgia State Route 231
- K-231 (Kansas highway)
- Kentucky Route 231 (former)
- Maine State Route 231
- Maryland Route 231
- M-231 (Michigan highway)
- Minnesota State Highway 231 (former)
- Missouri Route 231
- Montana Secondary Highway 231
- Nevada State Route 231
- New Mexico State Road 231
- New York State Route 231
- North Carolina Highway 231
- Ohio State Route 231
- Oregon Route 231 (former)
- Pennsylvania Route 231
- South Dakota Highway 231
- Tennessee State Route 231
- Texas State Highway 231
- Utah State Route 231
- Virginia State Route 231
- Wyoming Highway 231
Preceded by 230 |
Lists of highways 231 |
Succeeded by 232 |