What is "mellette"

Population (2000): 248
Housing Units (2000): 99
Land area (2000): 0.261403 sq. miles (0.677031 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.261403 sq. miles (0.677031 sq. km)
FIPS code: 41860
Located within: South Dakota (SD), FIPS 46
Location: 45.153970 N, 98.498336 W
ZIP Codes (1990): 57461
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:

Population (2000): 2083
Housing Units (2000): 824
Land area (2000): 1306.486125 sq. miles (3383.783385 sq. km)
Water area (2000): 3.262016 sq. miles (8.448583 sq. km)
Total area (2000): 1309.748141 sq. miles (3392.231968 sq. km)
Located within: South Dakota (SD), FIPS 46
Location: 43.576525 N, 100.794839 W
Headwords: