The Collaborative International Dictionary of English v.0.48:

Esparto \Es*par"to\, n. [Sp.; cf. L. spartum Spanish broom, Gr.
   ?.] (Bot.)
   A species of Spanish grass (Macrochloa tenacissima), of
   which cordage, shoes, baskets, etc., are made. It is also
   used for making paper.
   [1913 Webster]

U.S. Gazetteer Places (2000):

Esparto, CA -- U.S. Census Designated Place in California
   Population (2000):    1858
   Housing Units (2000): 612
   Land area (2000):     0.825046 sq. miles (2.136860 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.825046 sq. miles (2.136860 sq. km)
   FIPS code:            22846
   Located within:       California (CA), FIPS 06
   Location:             38.692938 N, 122.018981 W
   ZIP Codes (1990):     95627
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Esparto, CA
    Esparto