Missouri

Missouri has 115 Counties.

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Missouri Association of Counties
PO BOX 234
Jefferson City, MO 65102-0234
Phone: (573)634-2120
Fax: (573)634-3549
http://www.mocounties.com

County NACo
Member
2010
Population
Square
Miles
County Seat Board
Size
Founded
Adair 25,607 567 Kirksville   1841 
Andrew 17,291 433 Savannah   1841 
Atchison 5,685 547 Rock Port   1845 
Audrain 25,529 692 Mexico   1836 
Barry   35,597 778 Cassville   1835 
Barton 12,402 592 Lamar   1855 
Bates 17,049 837 Butler   1841 
Benton 19,056 704 Warsaw   1835 
Bollinger 12,363 618 Marble Hill   1851 
Boone 162,642 685 Columbia   1820 
Buchanan 89,201 408 Saint Joseph   1838 
Butler   42,794 695 Poplar Bluff   1849 
Caldwell 9,424 426 Kingston   1836 
Callaway 44,332 835 Fulton   1820 
Camden 44,002 656 Camdenton   1841 
Cape Girardeau 75,674 579 Jackson   1812 
Carroll 9,295 695 Carrollton   1833 
Carter 6,265 507 Van Buren   1859 
Cass 99,478 697 Harrisonville   1835 
Cedar 13,982 474 Stockton   1845 
Chariton 7,831 751 Keytesville   1820 
Christian 77,422 563 Ozark   1859 
Clark   7,139 505 Kahoka   1836 
Clay 221,939 397 Liberty   1822 
Clinton   20,743 419 Plattsburg  1833 
Cole 75,990 394 Jefferson City   1820 
Cooper 17,601 565 Boonville   1818 
Crawford 24,696 743 Steelville   1829 
Dade   7,883 490 Greenfield   1841 
Dallas 16,777 541 Buffalo   1841 
Daviess   8,433 563 Gallatin   1836 
De Kalb 12,892 421 Maysville   1845 
Dent 15,657 753 Salem  1851 
Douglas   13,684 814 Ava   1857 
Dunklin   31,953 541 Kennett   1845 
Franklin 101,492 923 Union   1818 
Gasconade 15,222 518 Hermann   1820 
Gentry 6,738 491 Albany   1845 
Greene 275,174 675 Springfield   1833 
Grundy 10,261 435 Trenton  1841 
Harrison 8,957 723 Bethany   1845 
Henry   22,272 697 Clinton   1834 
Hickory 9,627 399 Hermitage   1845 
Holt 4,912 463 Oregon   1841 
Howard 10,144 464 Fayette   1816 
Howell 40,400 927 West Plains   1857 
Iron 10,630 550 Ironton   1857 
Jackson 674,158 604 Kansas City and Independence  1826 
Jasper 117,404 638 Carthage   1841 
Jefferson   218,733 657 Hillsboro   1818 
Johnson 52,595 829 Warrensburg   1834 
Knox   4,131 504 Edina   1845 
Laclede 35,571 765 Lebanon   1849 
Lafayette 33,381 628 Lexington  1820 
Lawrence   38,634 612 Mount Vernon   1845 
Lewis   10,211 505 Monticello   1833 
Lincoln 52,566 627 Troy   1818 
Linn 12,761 616 Linneus  1837 
Livingston 15,195 532 Chillicothe   1837 
Macon 15,566 801 Macon   1837 
Madison 12,226 494 Fredericktown   1818 
Maries   9,176 527 Vienna   1855 
Marion 28,781 437 Palmyra   1826 
McDonald   23,083 539 Pineville   1849 
Mercer   3,785 454 Princeton   1845 
Miller   24,748 593 Tuscumbia   1837 
Mississippi 14,358 412 Charleston   1845 
Moniteau 15,607 415 California   1845 
Monroe   8,840 648 Paris   1831 
Montgomery   12,236 536 Montgomery City   1818 
Morgan 20,565 598 Versailles   1833 
New Madrid 18,956 675 New Madrid   1812 
Newton   58,114 625 Neosho   1838 
Nodaway 23,370 877 Maryville   1845 
Oregon 10,881 790 Alton   1845 
Osage   13,878 604 Linn   1841 
Ozark 9,723 745 Gainesville   1841 
Pemiscot   18,296 493 Caruthersville   1851 
Perry 18,971 474 Perryville   1820 
Pettis 42,201 682 Sedalia   1833 
Phelps 45,156 672 Rolla   1857 
Pike   18,516 670 Bowling Green   1818 
Platte 89,322 420 Platte City   1838 
Polk 31,137 636 Bolivar   1835 
Pulaski   52,274 547 Waynesville   1833 
Putnam   4,979 517 Unionville   1845 
Ralls 10,167 470 New London   1820 
Randolph 25,414 483 Huntsville   1829 
Ray 23,494 569 Richmond   1820 
Reynolds 6,696 808 Centerville   1845 
Ripley 14,100 630 Doniphan   1833 
Saline   23,370 756 Marshall   1820 
Schuyler   4,431 307 Lancaster   1845 
Scotland   4,843 437 Memphis  1841 
Scott 39,191 420 Benton   1821 
Shannon 8,441 1,004 Eminence   1841 
Shelby   6,373 501 Shelbyville   1835 
St. Charles   360,485 560 Saint Charles   1812 
St. Clair 9,805 670 Osceola   1841 
St. Francois 65,359 452 Farmington   1821 
St. Louis   998,954 508 Clayton   1812 
St. Louis City   319,294 62 St. Louis   29  1764 
Ste. Genevieve   18,145 499 Sainte Genevieve   1812 
Stoddard   29,968 823 Bloomfield   1835 
Stone 32,202 464 Galena   1851 
Sullivan 6,714 648 Milan   1845 
Taney 51,675 632 Forsyth   1837 
Texas 26,008 1,177 Houston  1845 
Vernon 21,159 826 Nevada   1851 
Warren 32,513 429 Warrenton   1833 
Washington 25,195 760 Potosi   1813 
Wayne 13,521 759 Greenville   1818 
Webster   36,202 593 Marshfield   1855 
Worth   2,171 267 Grant City   1861 
Wright 18,815 682 Hartville   1861