The Collaborative International Dictionary of English v.0.48:

Chico \Chi"co\, n.
   1. Var. of Chica.
      [Webster 1913 Suppl.]

   2. The common greasewood of the western United States
      (Sarcobatus vermiculatus).
      [Webster 1913 Suppl.]

   3. In the Philippines, the sapodilla or its fruit; also, the
      marmalade tree or its fruit.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Chico
    n 1: United States comedian; one of four brothers who made
         motion pictures together (1891-1961) [syn: Marx, Leonard
         Marx, Chico]

U.S. Gazetteer Places (2000):

Chico, CA -- U.S. city in California
   Population (2000):    59954
   Housing Units (2000): 24386
   Land area (2000):     27.744204 sq. miles (71.857156 sq. km)
   Water area (2000):    0.014048 sq. miles (0.036384 sq. km)
   Total area (2000):    27.758252 sq. miles (71.893540 sq. km)
   FIPS code:            13014
   Located within:       California (CA), FIPS 06
   Location:             39.739983 N, 121.835460 W
   ZIP Codes (1990):     95928
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Chico, CA
    Chico


U.S. Gazetteer Places (2000):

Chico, TX -- U.S. city in Texas
   Population (2000):    947
   Housing Units (2000): 406
   Land area (2000):     1.255619 sq. miles (3.252039 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.255619 sq. miles (3.252039 sq. km)
   FIPS code:            14620
   Located within:       Texas (TX), FIPS 48
   Location:             33.294313 N, 97.799547 W
   ZIP Codes (1990):     76431
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Chico, TX
    Chico