| Name of County
|
Date Formed
|
Parent County
|
Progeny County
|
| Adams
|
07 Feb 1835
|
Warren
|
none
|
| Allen
|
17 Dec 1823
|
Indian lands
|
DeKalb 1835, Wells 1835
|
| Bartholomew
|
08 Jan 1821
|
Indian lands
|
none
|
| Benton
|
18 Feb 1840
|
Indian lands
|
none
|
| Blackford
|
15 Feb 1838
|
Jay
|
none
|
| Boone
|
29 Jan 1831
|
Indian lands
|
none
|
| Brown
|
04 Feb 1836
|
Morgan, Johnson, Monroe, Lawrence
|
none
|
| Carroll
|
07 Jan 1828
|
Indian lands
|
White 1834
|
| Cass
|
18 Dec 1828
|
Indian lands
|
Miami 1832, Pulask 1835
|
| Clark
|
03 Feb 1801
|
Knox
|
Floyd 1819, Scott 1820
|
| Clay
|
12 Feb 1825
|
Indian lands
|
none
|
| Clinton
|
29 Jan 1830
|
Indian lands
|
none
|
| Crawford
|
29 Jan 1818
|
Harrison
|
Orange 1815
|
| Daviess
|
24 Jan 1816
|
Indian lands
|
none
|
| Dearborn
|
07 Mar 1803
|
Indiana Territory
|
Ohio 1844, Orange 1815
|
| Decatur
|
31 Dec 1821
|
Indian lands
|
none
|
| DeKalb
|
07 Feb 1835
|
Allen
|
none
|
| Delaware
|
26 Jan 1827
|
Indian lands
|
Grant 1831, Morgan 1822
|
| Dubois
|
20 Dec 1817
|
Orange, Perry
|
none
|
| Elkhart
|
29 Jan 1830
|
Indian lands
|
Noble 1835
|
| Fayette
|
28 Dec 1818
|
Wayne
|
Madison 1823
|
| Floyd
|
02 Jan 1819
|
Harrison, Clark
|
none
|
| Fountain
|
20 Dec 1825
|
Montgomery
|
none
|
| Franklin
|
27 Nov 1810
|
Wayne, Ripley
|
Rush 1821
|
| Fulton
|
07 Feb 1835
|
Indian lands
|
none
|
| Gibson
|
09 Mar 1813
|
Knox
|
none
|
| Grant
|
10 Feb 1831
|
Delaware
|
Huntington 1832
|
| Greene
|
05 Jan 1821
|
Knox
|
none
|
| Hamilton
|
08 Jan 1823
|
Hancock, Marion
|
Tipton 1844
|
| Hancock
|
26 Jan 1827
|
Madison
|
Hamilton 1823
|
| Harrison
|
11 Oct 1808
|
Indiana Territory
|
Crawford 1818, Floyd 1819, Perry 1814
|
| Hendricks
|
20 Dec 1823
|
Indian lands
|
none
|
| Henry
|
31 Dec 1821
|
Indian lands
|
none
|
| Howard
|
28 Dec 1846
|
renamed from Richardsville
|
none
|
| Huntington
|
02 Feb 1832
|
Grant
|
Wabash 1832, Wells 1835, Whitley 1835
|
| Jackson
|
18 Dec 1815
|
Washington
|
Scott 1820
|
| Jasper
|
07 Feb 1835
|
Indian lands
|
Newton 1835
|
| Jay
|
07 Feb 1835
|
Randolph
|
Blackford 1838
|
| Jefferson
|
23 Nov 1810
|
Indian lands
|
none
|
| Jennings
|
27 Dec 1816
|
Indian lands
|
none
|
| Johnson
|
31 Dec 1822
|
Indian lands
|
Brown 1836
|
| Knox
|
20 Jun 1790
|
Northwest Territory
|
Clark 1801, Gibson 1813, Green 1821, Posey 1814
|
| Kosciusko
|
07 Feb 1835
|
Indian lands
|
none
|
| LaGrange
|
02 Feb 1832
|
state lands
|
none
|
| Lake
|
28 Jan 1836
|
Porter, Newton
|
none
|
| La Porte
|
09 Jan 1832
|
Indian lands
|
none
|
| Lawrence
|
07 Jan 1818
|
Orange
|
Brown 1836
|
| Madison
|
04 Jan 1823
|
Fayette
|
Hancock 1827
|
| Marion
|
31 Dec 1821
|
Ohio
|
Hamilton 1823
|
| Marshall
|
07 Feb 1835
|
Indian lands
|
Starke 1835
|
| Martin
|
17 Jan 1820
|
Indian lands
|
none
|
| Miami
|
02 Feb 1832
|
Cass
|
none
|
| Monroe
|
14 Jan 1818
|
Orange
|
Brown 1836, Morgan 1821
|
| Montgomery
|
21 Dec 1822
|
Indian lands
|
Fountain 1825, Tippecanoe 1826
|
| Morgan
|
31 Dec 1821
|
Monroe
|
Brown 1836
|
| Newton
|
07 Feb 1835
|
Jasper
|
Lake 1836
|
| Noble
|
07 Feb 1835
|
Elkhart
|
none
|
| Ohio
|
04 Jan 1844
|
Dearborn
|
Marion 1821
|
| Orange
|
26 Dec 1815
|
Dearborn
|
Dubois 1817, Lawrence 1818, Monroe 1818
|
| Owen
|
21 Dec 1818
|
Indian lands
|
none
|
| Parke
|
09 Jan 1821
|
Indian lands
|
Vermillion 1824
|
| Perry
|
07 Sep 1814
|
Harrison, Warrick
|
Dubois 1817
|
| Pike
|
21 Dec 1816
|
Indian lands
|
none
|
| Porter
|
07 Feb 1835
|
Indian lands
|
Lake 1836
|
| Posey
|
07 Sep 1814
|
Knox
|
none
|
| Pulaski
|
07 Feb 1835
|
Cass
|
none
|
| Putnam
|
31 Dec 1821
|
Indian lands
|
none
|
| Randolph (new)
|
10 Jan 1818
|
Wayne
|
Jay 1835
|
| Ripley
|
27 Dec 1816
|
Indian lands
|
Franklin 1810
|
| Rush
|
31 Dec 1821
|
Franklin
|
none
|
| St. Joseph
|
29 Jan 1830
|
Indian lands
|
none
|
| Scott
|
12 Jan 1820
|
Clark, Jackson
|
none
|
| Shelby
|
31 Dec 1821
|
Indian lands
|
none
|
| Spencer
|
10 Jan 1818
|
Warwick
|
none
|
| Starke
|
07 Feb 1835
|
Marshall
|
none
|
| Steuben
|
07 Feb 1835
|
Indian lands
|
none
|
| Sullivan
|
30 Dec 1816
|
Indiana Territory
|
none
|
| Switzerland
|
07 sep 1814
|
Indian lands
|
none
|
| Tippecanoe
|
20 Jan 1826
|
Montgomery
|
none
|
| Tipton
|
15 Jan 1844
|
Hamilton
|
none
|
| Union
|
05 Jan 1821
|
Wayne
|
none
|
| Vanderburgh
|
07 Jan 1818
|
Indian lands
|
none
|
| Vermillion
|
02 Jan 1824
|
Parke
|
none
|
| Vigo
|
21 Jan 1818
|
Indian lands
|
none
|
| Warren
|
19 Jan 1827
|
Indian lands
|
Adams 1835
|
| Washington
|
21 Dec 1813
|
Indian lands
|
Jackson 1815
|
| Wayne
|
1811 Jan 01
|
Indiana Territory
|
Clark, Dearborn, Knox
|
| Wells
|
07 Feb 1835
|
Huntington, Allen
|
none
|
| White
|
01 Feb 1834
|
Carroll
|
none
|
| Whitley
|
07 Feb 1835
|
Huntington
|
none
|