Oskaloosa, KS -- U.S. city in Kansas Population (2000): 1165 Housing Units (2000): 478 Land area (2000): 0.909109 sq. miles (2.354582 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.909109 sq. miles (2.354582 sq. km) FIPS code: 53375 Located within: Kansas (KS), FIPS 20 Location: 39.215849 N, 95.313800 W ZIP Codes (1990): 66066 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Oskaloosa, KS Oskaloosa