Karlo, California

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Unincorporated community
Karlo is located in California
Karlo is located in the US
Location in California
Coordinates: 40°33′02″N 120°18′56″W / 40.55056°N 120.31556°W / 40.55056; -120.31556Coordinates: 40°33′02″N 120°18′56″W / 40.55056°N 120.31556°W / 40.55056; -120.31556
Country United States
State California
County Lassen County
Elevation[1] 4,432 ft (1,351 m)

Karlo (formerly, Secret)[2] is an unincorporated community in Lassen County, California,[1] United States. It is located on the Southern Pacific Railroad in the Secret Valley 20 miles (32 km) east-northeast of Susanville,[2] at an elevation of 4432 feet (1351 m).[1]

The Secret post office opened in 1892, closed in 1895, reopened in 1896, changed its name to Karlo in 1911, and closed for good in 1934.[2] The name Karlo honors Frank De Carlow, who settled nearby in 1886.[2]


  1. ^ a b c U.S. Geological Survey Geographic Names Information System: Karlo, California
  2. ^ a b c d Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 390. ISBN 1-884995-14-4.