This is a list of State Routes in Dauphin County, Pennsylvania.
As is the case with the other counties in the state, the route numbers start in the northeast quadrant and go clockwise from the 1000s to the 4000s.
Odd numbered roads travel south to north, with numbering starting in the north and west of the quadrant.
Even numbered roads travel west to east, with numbering starting in the south and west.
The quadrant dividers are not explicitly delineated.