Indiana Counties

Complete list of all 92 counties in Indiana with population, area, median income, and county seats — plus a free printable blank map.

Counties

Population

6,851,073

Area

35,828 sq mi

Capital

Indianapolis

Time Zone

America/Indiana/Indianapolis

Labeled outline map of Indiana counties. Download a printable version in SVG, PNG, or PDF.

All 92 Indiana counties

County	County Seat	Population ▼	Area	Median Income	Cities
Marion	—	979,381	396 mi²	$69,854	3
Lake	—	504,725	499 mi²	$76,246	19
Allen	—	384,176	657 mi²	$74,767	11
Hamilton	—	350,555	394 mi²	$121,459	9
St. Joseph	—	274,971	458 mi²	$71,412	9
Elkhart	—	207,941	463 mi²	$71,100	8
Tippecanoe	—	189,059	500 mi²	$60,559	10
Vanderburgh	—	183,565	233 mi²	$65,475	2
Hendricks	—	174,973	407 mi²	$99,811	11
Porter	—	167,541	418 mi²	$85,859	8
Johnson	—	159,452	320 mi²	$92,115	6
Monroe	—	139,276	395 mi²	$64,844	8
Madison	—	132,011	452 mi²	$64,600	10
Clark	—	126,513	373 mi²	$78,356	12
LaPorte	—	117,934	598 mi²	$70,528	12

How many counties does Indiana have?

Indiana has 92 counties covering 35,828 square miles and roughly 6,851,073 residents. The state was admitted to the Union in 1816 as the 19th state, and the current county boundaries reflect more than a century of administrative subdivision.

The largest county by land area is Allen County at 657 square miles, home to about 384,176 residents. The most populous is Marion County with approximately 979,381 residents — a density of about 2,473 people per square mile.

At the other end of the scale, Ohio County has only about 5,275 residents.

Indianapolis is both the state capital and the largest city in Indiana.

Related resources

Download a printable outline of Indiana’s county boundaries from our blank map of Indiana page — available in SVG, PNG, and PDF.

Use the What County Am I In? tool to detect which Indiana county a GPS location or address falls in, or the Address to County Lookup for batch input.

For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Indiana address and see every ZIP code and the total population inside.

Two SimpleMapLab studies cover Indiana specifically: the 100-mile radius around Indianapolis measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Indiana ranks the state’s most isolated inhabited place. The county-counts blog post puts Indiana’s 92 counties in national context.

Frequently asked questions

Indiana has 92 counties. The state was admitted to the Union in 1816 as the 19th state. County boundaries have shifted over time as the population spread and new administrative units were carved from existing ones.

Allen County is the largest by land area at 657 square miles, with about 384,176 residents.

Marion County is the most populous, with approximately 979,381 residents over 396 square miles.

Ohio County has the smallest population at about 5,275 residents.

Indianapolis is both the state capital and the largest city in Indiana.

Population, area, and demographic figures are aggregated from ZIP-code-level US Census data (via the SimpleMaps dataset) and the US Census Gazetteer. County boundaries used to render the map are from the US Atlas TopoJSON build of the Census Bureau's TIGER/Line shapefiles. The data is public domain.

Data sources

Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. Countiesboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,143). All sources are public domain.

Neighboring states