USStateMap

Indiana County Map

Indiana has 92 counties. Marion County is the most populous, with 977,203 residents in 2020, and Allen County is the largest by land area at 657.3 sq mi. The capital, Indianapolis, is the seat of Marion County.

County map of Indiana showing all 92 counties

County lines are switched on when the interactive map loads, over an OpenStreetMap base map with major cities (capital in red). Hover over a county to see its name, or untick Show counties to hide the lines.

92counties
Marionmost populous: 977,203
Allenlargest: 657.3 sq mi of land
Ohiosmallest: 86.1 sq mi of land

List of Indiana counties

CountyCounty seatPopulation (2020)Land area (sq mi)
Adams CountyDecatur35,809338.9
Allen CountyFort Wayne385,410657.3
Bartholomew CountyColumbus82,208406.9
Benton CountyFowler8,719406.4
Blackford CountyHartford City12,112165.1
Boone CountyLebanon70,812422.9
Brown CountyNashville15,475312.0
Carroll CountyDelphi20,306372.2
Cass CountyLogansport37,870412.1
Clark CountyJeffersonville121,093372.8
Clay CountyBrazil26,466357.6
Clinton CountyFrankfort33,190405.1
Crawford CountyEnglish10,526305.6
Daviess CountyWashington33,381429.5
DeKalb CountyAuburn43,265362.8
Dearborn CountyLawrenceburg50,679305.1
Decatur CountyGreensburg26,472372.6
Delaware CountyMuncie111,903392.1
Dubois CountyJasper43,637427.3
Elkhart CountyGoshen207,047463.2
Fayette CountyConnersville23,398215.0
Floyd CountyNew Albany80,484148.5
Fountain CountyCovington16,479395.7
Franklin CountyBrookville22,785384.4
Fulton CountyRochester20,480368.4
Gibson CountyPrinceton33,011487.4
Grant CountyMarion66,674414.1
Greene CountyBloomfield30,803542.5
Hamilton CountyNoblesville347,467394.4
Hancock CountyGreenfield79,840306.0
Harrison CountyCorydon39,654484.1
Hendricks CountyDanville174,788406.9
Henry CountyNew Castle48,914391.9
Howard CountyKokomo83,658293.1
Huntington CountyHuntington36,662382.6
Jackson CountyBrownstown46,428510.0
Jasper CountyRensselaer32,918559.7
Jay CountyPortland20,478383.9
Jefferson CountyMadison33,147360.6
Jennings CountyVernon27,613376.6
Johnson CountyFranklin161,765320.4
Knox CountyVincennes36,282515.8
Kosciusko CountyWarsaw80,240531.4
LaGrange CountyLaGrange40,446379.6
LaPorte CountyLa Porte112,417598.3
Lake CountyCrown Point498,700498.7
Lawrence CountyBedford45,011449.1
Madison CountyAnderson130,129451.9
Marion CountyIndianapolis977,203396.6
Marshall CountyPlymouth46,095443.6
Martin CountyShoals9,812335.8
Miami CountyPeru35,962373.8
Monroe CountyBloomington139,718394.5
Montgomery CountyCrawfordsville37,936504.6
Morgan CountyMartinsville71,780403.8
Newton CountyKentland13,830401.8
Noble CountyAlbion47,457410.8
Ohio CountyRising Sun5,94086.1
Orange CountyPaoli19,867398.4
Owen CountySpencer21,321385.3
Parke CountyRockville16,156444.7
Perry CountyTell City19,170381.7
Pike CountyPetersburg12,250334.3
Porter CountyValparaiso173,215418.1
Posey CountyMount Vernon25,222409.4
Pulaski CountyWinamac12,514433.7
Putnam CountyGreencastle36,726480.5
Randolph CountyWinchester24,502452.4
Ripley CountyVersailles28,995446.4
Rush CountyRushville16,752408.1
Scott CountyScottsburg24,384190.4
Shelby CountyShelbyville45,055411.1
Spencer CountyRockport19,810396.9
St. Joseph CountySouth Bend272,912457.8
Starke CountyKnox23,371309.1
Steuben CountyAngola34,435308.8
Sullivan CountySullivan20,817447.2
Switzerland CountyVevay9,737220.7
Tippecanoe CountyLafayette186,251498.9
Tipton CountyTipton15,359260.5
Union CountyLiberty7,087161.2
Vanderburgh CountyEvansville180,136233.4
Vermillion CountyNewport15,439256.9
Vigo CountyTerre Haute106,153403.6
Wabash CountyWabash30,976412.5
Warren CountyWilliamsport8,440364.7
Warrick CountyBoonville63,898384.8
Washington CountySalem28,182513.7
Wayne CountyRichmond66,553401.8
Wells CountyBluffton28,180368.1
White CountyMonticello24,688505.1
Whitley CountyColumbia City34,191335.6

Click a column heading to sort. Land area excludes water.

Most populous counties

Indiana had 6,785,528 residents in the 2020 Census. The five most populous counties held 36.6 percent of them:

  1. Marion County (seat Indianapolis): 977,203, or 14.4 percent of the state
  2. Lake County (seat Crown Point): 498,700, or 7.3 percent of the state
  3. Allen County (seat Fort Wayne): 385,410, or 5.7 percent of the state
  4. Hamilton County (seat Noblesville): 347,467, or 5.1 percent of the state
  5. St. Joseph County (seat South Bend): 272,912, or 4.0 percent of the state

The least populous is Ohio County, with 5,940 residents. The median Indiana county had 34,435 people in 2020.

Largest and smallest counties

By land area, the largest Indiana counties are Allen County (657.3 sq mi), LaPorte County (598.3 sq mi) and Jasper County (559.7 sq mi). The smallest are Ohio County (86.1 sq mi), Floyd County (148.5 sq mi) and Union County (161.2 sq mi).

The average Indiana county covers 389.4 sq mi of land. Allen County is 7.6 times the land area of Ohio County.

How counties work in Indiana

Indianapolis and Marion County have been consolidated since 1970 under a system known as Unigov, so the city and county share one mayor and one City-County Council. A few towns inside the county, including Beech Grove, Lawrence, Southport and Speedway, kept their own city or town governments.

Every Indiana county is divided into civil townships, each led by an elected township trustee whose duties include emergency poor relief.

Allen County, the largest by land area, is in northeastern Indiana around Fort Wayne.

Printable Indiana county maps

Download the labeled map with every county name, or the blank county map for quizzes and coloring; both are SVG files that print sharply at any size and are free for personal and classroom use.

Labeled county map of Indiana
Labeled SVGBlank SVGState outline PNG

Frequently asked questions

How many counties are in Indiana?

Indiana has 92 counties. Marion County has the most people and Ohio County the fewest.

What is the largest county in Indiana?

Allen County, with 657.3 sq mi of land. Its seat is Fort Wayne.

What is the most populous county in Indiana?

Marion County, with 977,203 residents in the 2020 Census, 14.4 percent of the state total.

What county is Indianapolis in?

Marion County. The city and county governments have been consolidated since 1970, and Indianapolis is the county seat.

More Indiana and county maps

See the Indiana state map for cities, geography and highways.

County maps of neighboring states: Illinois · Kentucky · Michigan · Ohio

Browse all 50 state maps.

Sources: U.S. Census Bureau (2020 Census, 2020 Gazetteer, boundaries); county seats from Wikipedia county lists cross-checked with Wikidata. Last reviewed October 2026.