37°41′5.79″N 121°45′45.17″W / 37.6849417°N 121.7625472°W / 37.6849417; -121.7625472 Laddville (or "Laddsville") is a former settlement in the western Livermore Valley of Alameda County, California.
It was located east of the settlement which eventually became Livermore.[1]