Click Below to go to the Respective Counties
Adair to Franklin	Gasconade to Ozark	Pemiscot to Wright

County	Founded	Parent	County Seat
Adair	1841	Macon	Kirksville
Andrew	1841	Platte Purchase	Savannah
Arkansas	extinct	New Madrid but abolished in 1819 to become part of Arkansas Terr.	-
Atchison	1845	Holt CO & Platte Purchase	Rockport
Audrain	1836	Monroe, Callaway, Ralls	Mexico
Barry	1835	Greene	Cassville
Barton	1855	Jasper	Lamar
Bates	1841	Cass	Butler
Benton	1835	Pettis, Greene	Warsaw
Bollinger	1851	Cape Girardeau, Stoddard, Madison, Wayne	Marble Hill
Bollinger	Bollinger County, MO Genealogy
Boone	1820	Howard	Columbia
Buchanan	1838	Platte Purchase	St. Joseph
Butler	1849	Wayne	Poplar Bluff
Caldwell	1836	Ray	Kingston
Callaway	1820	Boone, Howard, Montgomery	Fulton
Camden	1843	by renaming Kinderhook	Camdenton
Cape Girardeau	1812	Original District	Jackson
Carroll	1833	Ray	Carrollton
Carter	1859	Oregon, Reynolds, Ripley, Shannon	Van Buren
Cass	1849	by renaming Van Buren	Harrisonville
Cedar	1845	Dade, St. Clair	Stockton
Chariton	1820	Howard	Keytesville
Chariton	North Central Missouri Genealogy Page
Christian	1859	Greene, Taney, Webster	Ozark
Clark (Old)	1818 (extinct)	abolished 1819, became part of Arkansas Terr.	-
Clark (Modern)	1836	Lewis	Kahoka
Clay	1822	Ray	Liberty
Clinton	1833	Clay	Plattsburg
Cole	1820	Cooper	Jefferson City
Cooper	1818	Howard	Boonville
Crawford	1829	Gasconade	Steelville
Dade	1841	Barry, Polk	Greenfield
Dallas	1844	by renaming Niangua	Buffalo
Daviess	1836	Ray	Gallatin
Decatur	1843 (extinct)	was the name of Ozark between 1843 & 1845	-
De Kalb	1845	Clinton	Maysville
Dent	1851	Crawford, Shannon	Salem
Dodge	1849/50 (extinct)	absorbed into Putnam in 1853	-
Douglas	1857	Ozark	Ava
Dunklin 1st Site	1845	Stoddard	Kennett
Dunklin 2nd site	1845	Stoddard	Kennett
Franklin	1818	St. Louis	Union