Greenfield, IN -- U.S. city in Indiana Population (2000): 14600 Housing Units (2000): 6449 Land area (2000): 8.030932 sq. miles (20.800018 sq. km) Water area (2000): 0.038850 sq. miles (0.100621 sq. km) Total area (2000): 8.069782 sq. miles (20.900639 sq. km) FIPS code: 29520 Located within: Indiana (IN), FIPS 18 Location: 39.791338 N, 85.771343 W ZIP Codes (1990): 46140 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Greenfield, IN Greenfield