The Collaborative International Dictionary of English v.0.48:

Navajoes \Na"va*joes\, n. pl.; sing. Navajo. (Ethnol.)
   A tribe of Indians inhabiting New Mexico and Arizona, allied
   to the Apaches. They are now largely engaged in agriculture.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Navajo
    n 1: a member of an Athapaskan people that migrated to Arizona
         and New Mexico and Utah [syn: Navaho, Navajo]
    2: the Athapaskan language spoken by the Navaho [syn: Navaho,
       Navajo]

U.S. Gazetteer Counties (2000):

Navajo -- U.S. County in Arizona
   Population (2000):    97470
   Housing Units (2000): 47413
   Land area (2000):     9953.181516 sq. miles (25778.620688 sq. km)
   Water area (2000):    6.310525 sq. miles (16.344185 sq. km)
   Total area (2000):    9959.492041 sq. miles (25794.964873 sq. km)
   Located within:       Arizona (AZ), FIPS 04
   Location:             35.406314 N, 110.256683 W
   Headwords:
    Navajo
    Navajo, AZ
    Navajo County
    Navajo County, AZ


U.S. Gazetteer Places (2000):

Navajo, NM -- U.S. Census Designated Place in New Mexico
   Population (2000):    2097
   Housing Units (2000): 560
   Land area (2000):     2.259478 sq. miles (5.852021 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    2.259478 sq. miles (5.852021 sq. km)
   FIPS code:            51420
   Located within:       New Mexico (NM), FIPS 35
   Location:             35.905617 N, 109.028733 W
   ZIP Codes (1990):     87328
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Navajo, NM
    Navajo