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Silongkoyo

Ghost town · Plumas County, California

Quincy quadrangle, USGS topographic map (1950, 1:24,000)
Quincy quadrangle, USGS topographic map (1950, 1:24,000) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Silongkoyo is a ghost town in Plumas County, California. It is one of 23 former communities in Plumas County on the federal names register. That ranks the county 11th among the 58 California counties with a vanished settlement on record.

The U.S. Geological Survey lists Silongkoyo as a historical populated place on the Quincy 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 39.9366° N, 120.9455° W.

Key facts

USGS quadrangleQuincy
Elevation3,435 ft
Nearest living townQuincy, CA
Distance to it0.6 miles
GNIS feature ID1701411
Coordinates39.93656, -120.94551

Open the location on a map

What's there now

Silongkoyo is no longer a community in its own right. The nearest living town is Quincy, CA (population 1,580), about 0.6 miles away in a straight line, and the site sits at roughly 3,435 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Silongkoyo?

Silongkoyo is in Plumas County, California, at 39.9366, -120.9455.

How many ghost towns are in Plumas County?

Plumas County, California has 23 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.