Martinsville, IN -- U.S. city in Indiana Population (2000): 11698 Housing Units (2000): 4880 Land area (2000): 4.463852 sq. miles (11.561323 sq. km) Water area (2000): 0.010099 sq. miles (0.026157 sq. km) Total area (2000): 4.473951 sq. miles (11.587480 sq. km) FIPS code: 47448 Located within: Indiana (IN), FIPS 18 Location: 39.423339 N, 86.423779 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Martinsville, IN Martinsville