'Marion County, MO' definitions:

Marion -- U.S. County in Missouri

From: Gazetteer 2000
Name :
Marion -- U.S. County in Missouri
Population (2000) :
28289
Housing Units (2000) :
12443
Land area (2000) :
438.074614 sq. miles (1134.607993 sq. km)
Water area (2000) :
5.972228 sq. miles (15.468000 sq. km)
Total area (2000) :
444.046842 sq. miles (1150.075993 sq. km)
Located within :
Missouri (MO), FIPS 29
Location :
39.770045 N, 91.507631 W