'Yellowstone County' definitions:
Yellowstone -- U.S. County in Montana
From: Gazetteer 2000
Name :
Yellowstone -- U.S. County in Montana
Population (2000) :
129352
Housing Units (2000) :
54563
Land area (2000) :
2635.154295 sq. miles (6825.018002 sq. km)
Water area (2000) :
13.898206 sq. miles (35.996187 sq. km)
Total area (2000) :
2649.052501 sq. miles (6861.014189 sq. km)
Located within :
Montana (MT), FIPS 30
Location :
45.816535 N, 108.460718 W