'Greenhorn, CA' definitions:

Greenhorn, CA -- U.S. Census Designated Place in California

From: Gazetteer 2000
Name :
Greenhorn, CA -- U.S. Census Designated Place in California
Population (2000) :
146
Housing Units (2000) :
84
Land area (2000) :
6.721582 sq. miles (17.408817 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
6.721582 sq. miles (17.408817 sq. km)
FIPS code :
31029
Located within :
California (CA), FIPS 06
Location :
39.905794 N, 120.748665 W
Note :
some ZIP codes may be omitted esp. for suburbs.