List of highways numbered 304 explained
The following highways are numbered 304:
Brazil
Canada
China
Costa Rica
Hungary
Japan
Thailand
United States
- Arkansas Highway 304
- Florida State Road 304 (former)
- Georgia State Route 304 (former)
- Louisiana Highway 304
- Maryland Route 304
- Mississippi Highway 304
- Montana Secondary Highway 304
- Nevada State Route 304
- New Mexico State Road 304
- New York State Route 304
- North Carolina Highway 304
- Ohio State Route 304
- Pennsylvania Route 304
Pennsylvania Route 304 Truck
- South Carolina Highway 304
- Tennessee State Route 304
- Texas:
- Texas State Highway 304
- Texas State Highway Loop 304
- Farm to Market Road 304
- Utah State Route 304
- Virginia State Route 304
- Washington State Route 304
Other areas:
- Puerto Rico Highway 304
- U.S. Virgin Islands Highway 304