Lehi, UT -- U.S. city in Utah Population (2000): 19028 Housing Units (2000): 5280 Land area (2000): 20.324597 sq. miles (52.640462 sq. km) Water area (2000): 0.244030 sq. miles (0.632036 sq. km) Total area (2000): 20.568627 sq. miles (53.272498 sq. km) FIPS code: 44320 Located within: Utah (UT), FIPS 49 Location: 40.401662 N, 111.858627 W ZIP Codes (1990): 84043 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Lehi, UT Lehi