IN Co Origins Compiled by James W. Blankenship jkblank1(at)sbcglobal.net
Northwest Territory created 13Jul1787
Illinois created 12Dec1778
from Northwest Territory
St.Clair created 1790 from Illinois
Knox created
20Jun1790 from Northwest Territory
Randolph (Old)
created 1795 from Illinois
Wayne (Old) created 1796
from Northwest Territory
Indiana Territory
created 07May1800 from Northwest Territory
Clark created
03Feb1801 from Northwest Territory
Dearborn created 07Mar1803 from Clark
Michigan Territory created 11Jan1805 from Wayne(Old)
Harrison created
01Dec1808 from Clark & Knox
Illinois Territory created 03Feb1809 from Randolph (Old)
& St.Clair
Jefferson created 23Nov1810 from Clark,
Dearborn
Wayne created
27Nov1810 from Clark, Dearborn
Franklin created 27Nov1810 Clark, Dearborn, Jefferson
Gibson created
09Mar1813 from Knox
Warrick created
01Apr1813 from Knox
Washington created
17Jan1814 from Clark, Harrison, Jefferson
Posey created 07Sep1814 from Gibson, Knox, Warrick
Perry created 07Sep1814 from Gibson, Warrick
Switzerland created
01Oct1814 from Dearborn, Jefferson
Jackson created
18Dec1815 from Clark, Jefferson & Washington
Orange created 26Dec1815 from Knox, Gibson & Washington
Pike created
21Dec1816 from Gibson, Perry
Ripley created
27Dec1816 from Dearborn, Jefferson
Indiana statehood
11Dec1816
Pottowatomie & Miami Indian treaty signed Oct1826
Adams created 07Feb1835 from
Allen & Randolph
Allen created 17Dec1823 from Randolph & Northwest Territory
Bartholomew created
12Feb1821 Jackson & Delaware Indian lands
Benton created 18Feb1840 from Jasper
Blackford created 02Apr1838 from Jay
Boone created 01Apr1830 from Hendricks & Marion
Brown created 01Apr1836 from Bartholomew, Jackson & Monroe
Carroll created
07Jan1826 from Northwest Territory
Cass created 14Apr1829 from Pottowatomie &
Miami Indian lands
Clark created 03Feb1801 from Northwest Territory
Clay created 01Apr1825 from Vigo & Owen
Clinton created 01Mar1830
from Tippecanoe
Crawford created 01Mar1818 from Harrison, Perry & Orange
Daviess created 15Feb1817 from Knox
Dearborn created 07Mar1803 from Clark
Decatur created 04Mar1822 from Delaware
DeKalb created 07Feb1835 from Allen & LaGrange
Delaware created 01Apr1827 from Randolph
Dubois created 01Feb1818 from Pike
Elkhart created 01Apr1830
from Allen & Cass
Fayette created 01Jan1819
from Franklin & Wayne
Floyd created 01Feb1819
from Clarke & Harrison
Fountain created 20Dec1825 Montgomery
Franklin created 27Nov1810 Clark, Dearborn, Jefferson
Fulton created 07Feb1835 Allen, Cass, St. Joseph
Gibson created 09Mar1813
from Knox
Grant created 01Apr1831
Cass, Delaware, Madison
Greene created 05Feb1821 Daviess, Sullivan
Hamilton created 07Apr1823
from Marion & Northwest Territory
Hancock created 01Mar1828 from Madison
Harrison created 01Dec1808 from Clark & Knox
Hendricks created 20Dec1823 from Putnam & Northwest Territory
Henry created 01Jun1822
from Northwest Territory
Howard created 01May1844 from Carroll, Cass, Grant, Hamilton & Miami
Huntington created 02Feb1832 from Allen & Grant
Jackson created 18Dec1815
from Clark, Jefferson & Washington
Jasper created 07Feb1835 from Warren, White
Jay created 07Feb1835 from Delaware, Randolph
Jefferson created 23Nov1810 from Clark, Dearborn
Jennings created 27Dec1816
from Jackson, Jefferson
Johnson created 31Dec1822 from Northwest Territory
Knox created 20Jun1790
from Northwest Territory
Kosciusko created 07Feb1835 from Cass & Elkhart
LaGrange created 01Apr1832
from Allen & Elkhart
Lake created January 28, 1836 from Newton, Porter
LaPorte created 01Apr1832 from St Joseph
Lawrence created 16Mar1818 from Orange
Madison created 01Jul1823
from Marion
Marion created 31Dec1821 from Northwest Territory
Marshall created 07Feb1835 from Elkhart, St. Joseph
Martin created 01Feb1820 from Daviess, Dubois
Miami created 02Feb1832 from Cass
Monroe created 10Apr1818
from Orange
Montgomery created 21Dec1822 from Parke, Putnam
Morgan created 15Feb1822 from Northwest Territory
Newton created 07Feb1835 from
Northwest Territory
Noble created 01Mar1836 from Allen, Elkhart, La Grange
Ohio created 04Jan1844
from Dearborn
Orange created 26Dec1815 from Knox, Gibson & Washington
Owen created 21Dec1818 from Daviess, Sullivan
Parke created 02Apr1821
from Vigo & Northwest Territory
Perry created 07Sep1814 from Gibson, Warrick
Pike created 21Dec1816
from Gibson, Perry
Porter created 07Feb1835
from St. Joseph
Posey created 07Sep1814 from Gibson, Knox, Warrick
Pulaski created 07Feb1835 from Cass, St. Joseph
Putnam created 31Dec1821
from Owen, Vigo
Randolph (Old)
created 1795 from Illinois
Randolph created 10Jan1818
from Wayne
Ripley created 27Dec1816 from Dearborn, Jefferson
Rush created 01Apr1822
from Northwest Territory
Scott created 01Feb1820
from Clark, Jefferson, Jennings
Shelby created 31Dec1821
from Northwest
Territory
Spencer created 01Feb1818
from Perry,
Warwick
St.Clair created 1790 from Illinois
St.Joseph created 01Apr1830 from Cass
Starke created 07Feb1835
from St.Joseph
Steuben created 01May1837
from LaGrange
Sullivan created 15Jan1817
from Knox
Switzerland created 01Oct1814
from Dearborn, Jefferson
Tippecanoe created
01Mar1826 from
Northwest Territory
Tipton created 01May1844
from Cass,
Hamilton, Miami
Union created 01Feb1821 from Fayette, Franklin & Wayne
Vanderburgh created 01Feb1818
from Gibson, Posey, Warrick
Vermillion created
01Feb1824 from Parke
Vigo created 15Feb1818
from Sullivan
Wabash created 02Feb1832
from Cass, Grant
Warren created
01Mar1827 from Fountain
Vigo created
15Feb1818 from Sullivan
Warrick dreated 1813 from Knox
Washington created 17Jan1814
from Clark, Harrison, Jefferson
Wayne (Old) created 1796 from Northwest Territory
Wayne created 27Nov1810
from Clark, Dearborn
Wells created 07Feb1835 from Allen, Delaware, Randolph
White created 01Apr1834 from Carroll
Whitley created 07Feb1835 from Allen, Elkhart