List of counties in Indiana

The U.S. state of Indiana is divided into ninety-two counties. The oldest and newest counties in Indiana are Knox County (created 1790) and Newton County (created 1857), respectively.

The average population of Indiana's ninety-two counties according to 2006 U. S. Census estimates, is 66,092, with Marion County as the most populous (860,454), and Ohio County (5,623) the least. The largest county is Allen (657 sq. mi., 1,702 km²) and the smallest is, again, Ohio (87 sq. mi., 225 km²). According to the Indiana Constitution, no county may be created of less than 400 square miles, nor may any county smaller than this be further reduced in size.

License plates

2003-2008 Indiana License plate in the "large letter" format.

2003-2008 Gibson County, Indiana License plate in the "small letter" format.

2003-2008 Vanderburgh County, Indiana License plate in the "double letter" format.

The Indiana Bureau of Motor Vehicles issues standard automobile license plates bearing a one or two digit number identifying the county in which the vehicle is registered. These prefixes proceed alphabetically, with prefixes greater than 92 reserved as overflow for the state's historically most-populous counties. Individual license plate numbers are assigned sequentially in each licensing office. The numbers are usually in the format #A1234 or ##A1234, depending on whether the prefix is one or two digits. Special overflow consideration was given for Allen County and, more recently St. Joseph, Hamilton, Elkhart, and Vanderburgh Counties, which also issue plates of the format 2AA1234, 71A1234, and 49AA1234, respectively.^[1]

In 2008, the new rather bland-looking all blue with white decals Indiana License Plate will replace this county number system, used for about 40 years, with a new system of license plates bearing a format 123ABC with the stars and torch that adorn the state's flag on the left quarter of the plate. The county's name and number will appear on a white tag on the top with "INDIANA" on the bottom.

Indiana's IN GOD WE TRUST Plate. Formatted like a specialty plate, this very controversial and popular plate has been the subject of debate almost as hot as the state's time zone. The county number 42 for Knox County is at the bottom right corner

In January 2007, Indiana started to issue plates bearing the words "IN GOD WE TRUST" on the left third. Like Indiana's other specialty plates it has two vertical letters and 1-4 numbers and a county number on a tag at the bottom right corner and like the other specialty plates, it too also appears on trucks. From the start, this plate, made using Indiana's Specialty Plate Format, was especially controversial with the Indiana Civil Liberties Union (ICLU) which claims that it is a symbol of endorsement of a religion. Supporters claim that it merely states a trust in a higher being. Supporters are also quick to point out that "In God we Trust" happens to be the motto of the United States as well as at least 7 states with at least one, Florida, having the words on its seal and its flag. The words also appear at the upper middle of the US Dollar. Below is a map of Indiana, matching each county with its number on the right side.

Indiana Counties. Their numbers are in the county while their name is on the right-hand side. This map also includes information on the time zone changes and denials in 2007. Indiana's new 2008-2013 Passenger Plate is on the bottom right corner

Current counties

The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify counties, is provided with each entry. The links in the column FIPS County Code are to the Census Bureau Info page for that county. Listed are the 92 counties of the U.S. state of Indiana.

County	FIPS Code[2]	County Seat	Created	Origin	Etymology	Population	Area	Map
Adams County	001	Decatur	1835		John Quincy Adams, sixth President of the United States	.	. mi² (. km²)
Allen County	003	Fort Wayne	1824		Colonel John Allen, Kentucky state senator	.	. mi² (. km²)
Bartholomew County	005	Columbus	1821		Lt. Col. Joseph Bartholomew	.	. mi² (. km²)
Benton County	007	Fowler	1840		Thomas H. Benton, U.S. Senator from Missouri	.	. mi² (. km²)
Blackford County	009	Hartford City	1838		Judge Isaac Blackford, Speaker of the Indiana General Assembly and Justice of the Indiana Supreme Court	.	. mi² (. km²)
Boone County	011	Lebanon	1830		Frontiersman Daniel Boone	.	. mi² (. km²)
Brown County	013	Nashville	1836		General Jacob Brown	.	. mi² (. km²)
Carroll County	015	Delphi	1828		Charles Carroll, signer of the Declaration of Independence	.	. mi² (. km²)
Cass County	017	Logansport	1829		Gen. Lewis Cass, Governor of Michigan Territory and U.S. Secretary of State	.	. mi² (. km²)
Clark County	019	Jeffersonville	1801		General George Rogers Clark	.	. mi² (. km²)
Clay County	021	Brazil	1825		Henry Clay	.	. mi² (. km²)
Clinton County	023	Frankfort	1830		DeWitt Clinton, Governor of New York State	.	. mi² (. km²)
Crawford County	025	English	1818		Col. William Crawford	.	. mi² (. km²)
Daviess County	027	Washington	1816		Col. Joseph H. Daviess	.	. mi² (. km²)
Dearborn County	029	Lawrenceburg	1803		U.S. Secretary of War Henry Dearborn	.	. mi² (. km²)
Decatur County	031	Greensburg	1821		Commodore Stephen Decator	.	. mi² (. km²)
DeKalb County	033	Auburn	1835		Johann de Kalb	.	. mi² (. km²)
Delaware County	035	Muncie	1827		Delaware Native American people	.	. mi² (. km²)
Dubois County	037	Jasper	1817		Toussaint Dubois	.	. mi² (. km²)
Elkhart County	039	Goshen	1830		Elkhart Native American people	.	. mi² (. km²)
Fayette County	041	Connersville	1818		Marquis de la Fayette	.	. mi² (. km²)
Floyd County	043	New Albany	1819		Col. John Floyd	.	. mi² (. km²)
Fountain County	045	Covington	1825		Maj. James Fontaine	.	. mi² (. km²)
Franklin County	047	Brookville	1810		Benjamin Franklin	.	. mi² (. km²)
Fulton County	049	Rochester	1835		Robert Fulton, inventor of the steamboat	.	. mi² (. km²)
Gibson County	051	Princeton	1813		John Gibson, a secretary of the Indiana Territory	.	. mi² (. km²)
Grant County	053	Marion	1831		Captains Samuel and Moses Grant	.	. mi² (. km²)
Greene County	055	Bloomfield	1821		Gen. Nathanael Greene	.	. mi² (. km²)
Hamilton County	057	Noblesville	1823		Alexander Hamilton	.	. mi² (. km²)
Hancock County	059	Greenfield	1827		John Hancock	.	. mi² (. km²)
Harrison County	061	Corydon	1808		William Henry Harrison, governor of Indiana Territory and U.S. President	.	. mi² (. km²)
Hendricks County	063	Danville	1823		Governor of Indiana William Hendricks	.	. mi² (. km²)
Henry County	065	New Castle	1821		Patrick Henry	.	. mi² (. km²)
Howard County	067	Kokomo	1844		Gen. Tilghman Howard, a U.S. Representative from Indiana	.	. mi² (. km²)
Huntington County	069	Huntington	1832		Samuel Huntington, signer the Declaration of Independence	.	. mi² (. km²)
Jackson County	071	Brownstown	1815		U.S. President Andrew Jackson	.	. mi² (. km²)
Jasper County	073	Rensselaer	1835		Sgt. William Jasper	.	. mi² (. km²)
Jay County	075	Portland	1835		John Jay, first Chief Justice of the United States Supreme Court	.	. mi² (. km²)
Jefferson County	077	Madison	1810		U.S. President Thomas Jefferson	.	. mi² (. km²)
Jennings County	079	Vernon	1816		The first Governor of Indiana, Jonathan Jennings	.	. mi² (. km²)
Johnson County	081	Franklin	1822		John Johnson, a judge of the Indiana Supreme Court	.	. mi² (. km²)
Knox County	083	Vincennes	1790		U.S. Secretary of War Henry Knox	.	. mi² (. km²)
Kosciusko County	085	Warsaw	1835		Tadeusz Kościuszko	.	. mi² (. km²)
Lagrange County	087	LaGrange	1832		The Marquis de la Fayette's home outside of Paris, France	.	. mi² (. km²)
Lake County	089	Crown Point	1835		Its location on Lake Michigan	.	. mi² (. km²)
LaPorte County	091	LaPorte	1836		LaPorte means the door or the port in the French language	.	. mi² (. km²)
Lawrence County	093	Bedford	1819		Capt. James Lawrence	.	. mi² (. km²)
Madison County	095	Anderson	1823		U.S. President James Madison	.	. mi² (. km²)
Marion County	097	Indianapolis	1821		Gen. Francis Marion	.	. mi² (. km²)
Marshall County	099	Plymouth	1835		U.S. Chief Justice John Marshall	.	. mi² (. km²)
Martin County	101	Shoals	1820		Maj. John T. Martin	.	. mi² (. km²)
Miami County	103	Peru	1832		Miami Native American people	.	. mi² (. km²)
Monroe County	105	Bloomington	1818		U.S. President James Monroe	.	. mi² (. km²)
Montgomery County	107	Crawfordsville	1822		Gen. Richard Montgomery	.	. mi² (. km²)
Morgan County	109	Martinsville	1821		Gen. Daniel Morgan	.	. mi² (. km²)
Newton County	111	Kentland	1857		Sgt. John Newton	.	. mi² (. km²)
Noble County	113	Albion	1835		James Noble, the first U.S. Senator from Indiana	.	. mi² (. km²)
Ohio County	115	Rising Sun	1844		The Ohio River	.	. mi² (. km²)
Orange County	117	Paoli	1815		Orange County, North Carolina, in turn named for the Dutch Protestant House of Orange	.	. mi² (. km²)
Owen County	119	Spencer	1818		Abraham Owen	.	. mi² (. km²)
Parke County	121	Rockville	1821		Benjamin Parke, a delegate of Indiana Territory to the U.S. Congress	.	. mi² (. km²)
Perry County	123	Tell City	1814		Commodore Oliver Hazard Perry	.	. mi² (. km²)
Pike County	125	Petersburg	1816		Zebulon M. Pike	.	. mi² (. km²)
Porter County	127	Valparaiso	1845		Capt. David Porter	.	. mi² (. km²)
Posey County	129	Mount Vernon	1814		Thomas Posey, a governor of Indiana Territory	.	. mi² (. km²)
Pulaski County	131	Winamac	1835		Kazimierz Pułaski	.	. mi² (. km²)
Putnam County	133	Greencastle	1821		Gen. Israel Putnam	.	. mi² (. km²)
Randolph County	135	Winchester	1818		Either Thomas Randolph, a soldier killed at the Battle of Tippecanoe, or for Randolph County, North Carolina	.	. mi² (. km²)
Ripley County	137	Versailles	1816		Gen. Eleazer Wheelock Ripley	.	. mi² (. km²)
Rush County	139	Rushville	1821		Dr. Benjamin Rush, signer the Declaration of Independence	.	. mi² (. km²)
St. Joseph County	141	South Bend	1830		St. Joseph River, which flows through it toward Lake Michigan	.	. mi² (. km²)
Scott County	143	Scottsburg	1820		Charles Scott, Governor of Kentucky	.	. mi² (. km²)
Shelby County	145	Shelbyville	1821		Gen. Isaac Shelby, Governor of Kentucky	.	. mi² (. km²)
Spencer County	147	Rockport	1818		Capt. Spier Spencer	.	. mi² (. km²)
Starke County	149	Knox	1835		Gen. John Stark	.	. mi² (. km²)
Steuben County	151	Angola	1835		Baron Frederick von Steuben	.	. mi² (. km²)
Sullivan County	153	Sullivan	1816		Daniel Sullivan	.	. mi² (. km²)
Switzerland County	155	Vevay	1814		The home country of many of the early settlers, Switzerland	.	. mi² (. km²)
Tippecanoe County	157	Lafayette	1826		The Tippecanoe River and the Battle of Tippecanoe	.	. mi² (. km²)
Tipton County	159	Tipton	1844		John Tipton	.	. mi² (. km²)
Union County	161	Liberty	1821		The union of parts of Fayette, Franklin and Wayne counties	.	. mi² (. km²)
Vanderburgh County	163	Evansville	1818		Henry Vanderburgh, a judge for Indiana Territory	.	. mi² (. km²)
Vermillion County	165	Newport	1824		The Vermillion River	.	. mi² (. km²)
Vigo County	167	Terre Haute	1818		Francis Vigo	.	. mi² (. km²)
Wabash County	169	Wabash	1832		The Wabash River	.	. mi² (. km²)
Warren County	171	Williamsport	1827		Dr. Joseph Warren	.	. mi² (. km²)
Warrick County	173	Boonville	1813		Capt. Jacob Warrick	.	. mi² (. km²)
Washington County	175	Salem	1813		U.S. President George Washington	.	. mi² (. km²)
Wayne County	177	Richmond	1810		Gen. "Mad" Anthony Wayne	.	. mi² (. km²)
Wells County	179	Bluffton	1835		Capt. William A. Wells	.	. mi² (. km²)
White County