The Collaborative International Dictionary of English v.0.48:

Oneidas \O*nei"das\, prop. n. pl.; sing. Oneida. (Ethnol.)
   A tribe of Indians formerly inhabiting the region near Oneida
   Lake in the State of New York, and forming part of the Five
   Nations. Remnants of the tribe now live in New York, Canada,
   and Wisconsin.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Oneida
    n 1: a member of the Iroquoian people formerly living east of
         Lake Ontario
    2: the Iroquoian language spoken by the Oneida

U.S. Gazetteer Counties (2000):

Oneida -- U.S. County in Idaho
   Population (2000):    4125
   Housing Units (2000): 1755
   Land area (2000):     1200.334297 sq. miles (3108.851426 sq. km)
   Water area (2000):    1.275906 sq. miles (3.304581 sq. km)
   Total area (2000):    1201.610203 sq. miles (3112.156007 sq. km)
   Located within:       Idaho (ID), FIPS 16
   Location:             42.174344 N, 112.410452 W
   Headwords:
    Oneida
    Oneida, ID
    Oneida County
    Oneida County, ID


U.S. Gazetteer Counties (2000):

Oneida -- U.S. County in New York
   Population (2000):    235469
   Housing Units (2000): 102803
   Land area (2000):     1212.702811 sq. miles (3140.885727 sq. km)
   Water area (2000):    44.411044 sq. miles (115.024072 sq. km)
   Total area (2000):    1257.113855 sq. miles (3255.909799 sq. km)
   Located within:       New York (NY), FIPS 36
   Location:             43.188633 N, 75.391295 W
   Headwords:
    Oneida
    Oneida, NY
    Oneida County
    Oneida County, NY


U.S. Gazetteer Counties (2000):

Oneida -- U.S. County in Wisconsin
   Population (2000):    36776
   Housing Units (2000): 26627
   Land area (2000):     1124.498658 sq. miles (2912.438031 sq. km)
   Water area (2000):    111.377929 sq. miles (288.467499 sq. km)
   Total area (2000):    1235.876587 sq. miles (3200.905530 sq. km)
   Located within:       Wisconsin (WI), FIPS 55
   Location:             45.719517 N, 89.501903 W
   Headwords:
    Oneida
    Oneida, WI
    Oneida County
    Oneida County, WI


U.S. Gazetteer Places (2000):

Oneida, WI -- U.S. Census Designated Place in Wisconsin
   Population (2000):    1070
   Housing Units (2000): 383
   Land area (2000):     5.653352 sq. miles (14.642113 sq. km)
   Water area (2000):    0.056176 sq. miles (0.145496 sq. km)
   Total area (2000):    5.709528 sq. miles (14.787609 sq. km)
   FIPS code:            59975
   Located within:       Wisconsin (WI), FIPS 55
   Location:             44.496192 N, 88.188278 W
   ZIP Codes (1990):     54155
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, WI
    Oneida


U.S. Gazetteer Places (2000):

Oneida, NY -- U.S. city in New York
   Population (2000):    10987
   Housing Units (2000): 4672
   Land area (2000):     22.030224 sq. miles (57.058017 sq. km)
   Water area (2000):    0.046559 sq. miles (0.120588 sq. km)
   Total area (2000):    22.076783 sq. miles (57.178605 sq. km)
   FIPS code:            54837
   Located within:       New York (NY), FIPS 36
   Location:             43.084961 N, 75.653375 W
   ZIP Codes (1990):     13421
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, NY
    Oneida


U.S. Gazetteer Places (2000):

Oneida, IL -- U.S. city in Illinois
   Population (2000):    752
   Housing Units (2000): 308
   Land area (2000):     0.725949 sq. miles (1.880198 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.725949 sq. miles (1.880198 sq. km)
   FIPS code:            56159
   Located within:       Illinois (IL), FIPS 17
   Location:             41.074579 N, 90.224730 W
   ZIP Codes (1990):     61467
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, IL
    Oneida


U.S. Gazetteer Places (2000):

Oneida, PA -- U.S. Census Designated Place in Pennsylvania
   Population (2000):    219
   Housing Units (2000): 135
   Land area (2000):     0.181648 sq. miles (0.470466 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.181648 sq. miles (0.470466 sq. km)
   FIPS code:            56816
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.907601 N, 76.125235 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, PA
    Oneida


U.S. Gazetteer Places (2000):

Oneida, KS -- U.S. city in Kansas
   Population (2000):    70
   Housing Units (2000): 36
   Land area (2000):     0.231737 sq. miles (0.600197 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.231737 sq. miles (0.600197 sq. km)
   FIPS code:            52900
   Located within:       Kansas (KS), FIPS 20
   Location:             39.865877 N, 95.938733 W
   ZIP Codes (1990):     66522
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, KS
    Oneida


U.S. Gazetteer Places (2000):

Oneida, TN -- U.S. town in Tennessee
   Population (2000):    3615
   Housing Units (2000): 1715
   Land area (2000):     10.171853 sq. miles (26.344978 sq. km)
   Water area (2000):    0.139140 sq. miles (0.360371 sq. km)
   Total area (2000):    10.310993 sq. miles (26.705349 sq. km)
   FIPS code:            55860
   Located within:       Tennessee (TN), FIPS 47
   Location:             36.500535 N, 84.516553 W
   ZIP Codes (1990):     37841
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Oneida, TN
    Oneida