The Collaborative International Dictionary of English v.0.48:

halfway house \half"way house`\,
   1. an inn or place of call midway on a journey.
      [1913 Webster]

   2. A residence for former convicts, persons recovering from
      mental illness, or from drug or alcohol addiction, serving
      as an intermediate environment between total confinement
      and complete freedom, and having structured programs
      designed to ease successful reintegration into society.
      [PJC]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "halfway house":
   almshouse, asylum, bisection, equidistance, foster home, half,
   home, hospice, hospitium, mediety, mid-distance, midcourse,
   middle distance, midway, moiety, nursing home, orphanage,
   poor farm, poorhouse, rest home, retreat, workhouse



U.S. Gazetteer Places (2000):

Halfway House, PA -- U.S. Census Designated Place in Pennsylvania
   Population (2000):    1823
   Housing Units (2000): 662
   Land area (2000):     1.996276 sq. miles (5.170330 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.996276 sq. miles (5.170330 sq. km)
   FIPS code:            32024
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.274479 N, 75.639118 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Halfway House, PA
    Halfway House