Counties and the pupulation in Missouri: St. Louis county, Jackson county, St. Charles county, St. Louis county, Greene county, Clay county, Jefferson county, Boone county, Jasper county, Franklin county, Cass county, Platte county | USANearBy.com

Counties in Missouri Cities in Missouri

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Map	County Name	Population
	St. Louis County, MO	998,954
	Jackson County, MO	674,158
	St. Charles County, MO	360,485
	St. Louis County, MO	319,294
	Greene County, MO	275,174
	Clay County, MO	221,939
	Jefferson County, MO	218,733
	Boone County, MO	162,642
	Jasper County, MO	117,404
	Franklin County, MO	101,492
	Cass County, MO	99,478
	Platte County, MO	89,322

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