Judsonville, California
Judsonville was a city in eastern Contra Costa County, California. It was located 3 miles (4.8 km) northeast of Stewartville, which is also now a ghost town. It was a mining town for the nearby coal mines.
A post office operated at Judsonville from 1878 to 1883, with a closure in 1879. The name is in honor of Egbert Judson, part owner of a mine.
Coordinates: 37°57′35″N 121°48′45″W / 37.95971°N 121.81261°W
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