To designate the facility of the United States Postal Service located at 24355 Creekside Road in Santa Clarita, California, as the "William L. Reynolds Post Office Building".

This bill names a specific United States Postal Service facility at 24355 Creekside Road in Santa Clarita, California, as the "William L. Reynolds Post Office Building." It directly affects the physical location of this post office by changing its official designation. The key provision is a simple name change, with all existing references to the building in federal documents automatically updated to reflect the new name. This is a ceremonial designation with no policy or funding changes.