Site information:

On campus of California State University. Plaque located in plaza at end of Sinclar Rd, base of Guy West Bridge, Sacramento

I'm not ceratin of the exact site location, but is certainly no longer exists.

38.561621, -121.422311

Plaque information:

State plaque

Plaque text:

Five Mile Station

Departing at 2:45 a.m. from the Alta Telegraph Co. in Sacramento, rider Sam (Bill) Hamilton carried the first mail of the Central Overland Pony Express eastward on April 4, 1860. Quickly changing ponies at the Five Mile House, he sped on to the next stop at Fifteen Mile Station.

Plaque placed by the California State Park Commission in cooperation with the Sacramento Historic Landmarks Commission, Sacramento County Historical Society, and the Central Overland Pony Express Trail Association, April 2, 1960.

Registered 9/11/1959