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Radum

Ghost town · Alameda County, California

Pleasanton quadrangle, USGS topographic map (1906, 1:62,500)
Pleasanton quadrangle, USGS topographic map (1906, 1:62,500) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Radum is a ghost town in Alameda County, California. It is one of 13 former communities in Alameda County on the federal names register. That ranks the county 26th among the 58 California counties with a vanished settlement on record.

The U.S. Geological Survey lists Radum as a historical populated place on the Livermore topographic quadrangle: the name is no longer in official use for a community, whether the settlement was abandoned, absorbed into a neighbouring town or renamed. The recorded location is 37.6702° N, 121.8591° W.

Key facts

USGS quadrangleLivermore
Elevation357 ft
Nearest living townPleasanton, CA
Distance to it1.2 miles
GNIS feature ID252772
Coordinates37.67021, -121.85912

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What's there now

Radum is no longer a community in its own right. The nearest living town is Pleasanton, CA (population 77,500), about 1.2 miles away in a straight line, and the site sits at roughly 357 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Radum?

Radum is in Alameda County, California, at 37.6702, -121.8591.

How many ghost towns are in Alameda County?

Alameda County, California has 13 ghost towns on record at Wayfarrow.

Sources and licences

Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.