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