The Collaborative International Dictionary of English v.0.48:

Ernest \Er"nest\, n.
   See Earnest. [Obs.] --Chaucer.
   [1913 Webster]

U.S. Gazetteer Places (2000):

Ernest, PA -- U.S. borough in Pennsylvania
   Population (2000):    501
   Housing Units (2000): 221
   Land area (2000):     0.234704 sq. miles (0.607881 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.234704 sq. miles (0.607881 sq. km)
   FIPS code:            24040
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.677609 N, 79.164228 W
   ZIP Codes (1990):     15739
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Ernest, PA
    Ernest