List of highways numbered 604
# List of highways numbered 604

The following highways are numbered 604:

## Canada

* Alberta Highway 604
* Ontario Highway 604 (former)
* Saskatchewan Highway 604

## Costa Rica

* National Route 604

## United States

* SR 604
* SR 604
* PR-604
* SR 604

| Preceded by 603 | Lists of highways 604 | Succeeded by 605 |
| - | - | - |
