The Collaborative International Dictionary of English v.0.48:

Midland \Mid"land\, a.
   1. Being in the interior country; distant from the coast or
      seashore; as, midland towns or inhabitants. --Howell.
      [1913 Webster]

   2. Surrounded by the land; mediterranean.
      [1913 Webster]

            And on the midland sea the French had awed.
                                                  --Dryden.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Midland \Mid"land\, n.
   The interior or central region of a country; -- usually in
   the plural. --Drayton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

midland
    adj 1: of or coming from the middle of a region or country;
           "upcountry districts" [syn: interior, midland,
           upcountry]
    n 1: a town in west central Texas
    2: the interior part of a country

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "midland":
   amidships, average, central, core, equatorial, equidistant,
   halfway, heartland, hinterland, inland, inlands, inshore, interior,
   intermediary, intermediate, mean, medial, median, mediocre,
   mediterranean, medium, mesial, mezzo, mid, middle, middlemost,
   middling, midlands, midmost, midships, midway, nuclear,
   up-country



U.S. Gazetteer Counties (2000):

Midland -- U.S. County in Michigan
   Population (2000):    82874
   Housing Units (2000): 33796
   Land area (2000):     521.193774 sq. miles (1349.885621 sq. km)
   Water area (2000):    6.696531 sq. miles (17.343934 sq. km)
   Total area (2000):    527.890305 sq. miles (1367.229555 sq. km)
   Located within:       Michigan (MI), FIPS 26
   Location:             43.642407 N, 84.335448 W
   Headwords:
    Midland
    Midland, MI
    Midland County
    Midland County, MI


U.S. Gazetteer Counties (2000):

Midland -- U.S. County in Texas
   Population (2000):    116009
   Housing Units (2000): 48060
   Land area (2000):     900.250161 sq. miles (2331.637115 sq. km)
   Water area (2000):    1.715189 sq. miles (4.442320 sq. km)
   Total area (2000):    901.965350 sq. miles (2336.079435 sq. km)
   Located within:       Texas (TX), FIPS 48
   Location:             31.968193 N, 102.074760 W
   Headwords:
    Midland
    Midland, TX
    Midland County
    Midland County, TX


U.S. Gazetteer Places (2000):

Midland, AR -- U.S. town in Arkansas
   Population (2000):    253
   Housing Units (2000): 113
   Land area (2000):     0.317942 sq. miles (0.823467 sq. km)
   Water area (2000):    0.026177 sq. miles (0.067798 sq. km)
   Total area (2000):    0.344119 sq. miles (0.891265 sq. km)
   FIPS code:            45500
   Located within:       Arkansas (AR), FIPS 05
   Location:             35.092455 N, 94.353307 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, AR
    Midland


U.S. Gazetteer Places (2000):

Midland, OH -- U.S. village in Ohio
   Population (2000):    265
   Housing Units (2000): 117
   Land area (2000):     0.351923 sq. miles (0.911477 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.351923 sq. miles (0.911477 sq. km)
   FIPS code:            49896
   Located within:       Ohio (OH), FIPS 39
   Location:             39.306175 N, 83.909505 W
   ZIP Codes (1990):     45148
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, OH
    Midland


U.S. Gazetteer Places (2000):

Midland, PA -- U.S. borough in Pennsylvania
   Population (2000):    3137
   Housing Units (2000): 1651
   Land area (2000):     2.040796 sq. miles (5.285636 sq. km)
   Water area (2000):    0.167055 sq. miles (0.432670 sq. km)
   Total area (2000):    2.207851 sq. miles (5.718306 sq. km)
   FIPS code:            49184
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.638273 N, 80.452455 W
   ZIP Codes (1990):     15059
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, PA
    Midland


U.S. Gazetteer Places (2000):

Midland, SD -- U.S. town in South Dakota
   Population (2000):    179
   Housing Units (2000): 91
   Land area (2000):     0.343619 sq. miles (0.889970 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.343619 sq. miles (0.889970 sq. km)
   FIPS code:            42140
   Located within:       South Dakota (SD), FIPS 46
   Location:             44.071134 N, 101.156336 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, SD
    Midland


U.S. Gazetteer Places (2000):

Midland, TX -- U.S. city in Texas
   Population (2000):    94996
   Housing Units (2000): 39855
   Land area (2000):     66.608186 sq. miles (172.514403 sq. km)
   Water area (2000):    0.185399 sq. miles (0.480182 sq. km)
   Total area (2000):    66.793585 sq. miles (172.994585 sq. km)
   FIPS code:            48072
   Located within:       Texas (TX), FIPS 48
   Location:             32.005072 N, 102.099239 W
   ZIP Codes (1990):     79701 79703 79705 79707
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, TX
    Midland


U.S. Gazetteer Places (2000):

Midland, MD -- U.S. town in Maryland
   Population (2000):    473
   Housing Units (2000): 211
   Land area (2000):     0.189178 sq. miles (0.489968 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.189178 sq. miles (0.489968 sq. km)
   FIPS code:            52475
   Located within:       Maryland (MD), FIPS 24
   Location:             39.589842 N, 78.948772 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, MD
    Midland


U.S. Gazetteer Places (2000):

Midland, MI -- U.S. city in Michigan
   Population (2000):    41685
   Housing Units (2000): 17773
   Land area (2000):     33.218455 sq. miles (86.035400 sq. km)
   Water area (2000):    1.733126 sq. miles (4.488775 sq. km)
   Total area (2000):    34.951581 sq. miles (90.524175 sq. km)
   FIPS code:            53780
   Located within:       Michigan (MI), FIPS 26
   Location:             43.622707 N, 84.230628 W
   ZIP Codes (1990):     48640 48642
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, MI
    Midland


U.S. Gazetteer Places (2000):

Midland, WA -- U.S. Census Designated Place in Washington
   Population (2000):    7414
   Housing Units (2000): 3028
   Land area (2000):     3.034621 sq. miles (7.859633 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    3.034621 sq. miles (7.859633 sq. km)
   FIPS code:            45495
   Located within:       Washington (WA), FIPS 53
   Location:             47.171510 N, 122.411060 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Midland, WA
    Midland