'Fall River County, SD' definitions:

Fall River -- U.S. County in South Dakota

From: Gazetteer 2000
Name :
Fall River -- U.S. County in South Dakota
Population (2000) :
7453
Housing Units (2000) :
3812
Land area (2000) :
1739.861851 sq. miles (4506.221317 sq. km)
Water area (2000) :
9.281122 sq. miles (24.037994 sq. km)
Total area (2000) :
1749.142973 sq. miles (4530.259311 sq. km)
Located within :
South Dakota (SD), FIPS 46
Location :
43.337098 N, 103.558248 W