Indiana Counties Map: Click All 92 Counties

How many counties are in Indiana?

Indiana has 92 counties. 11 states have more, and 38 have fewer.

Indiana has 92 counties. In 1970 the city of Indianapolis merged most of its government with Marion County, a system known as Unigov. Ohio County, along the Ohio River, is the smallest county by area and has the fewest people.

How Indiana's counties were formed

Knox County, created in 1790 around the old French post of Vincennes, is Indiana's oldest. Most counties were drawn between statehood in 1816 and the 1840s, moving north as land opened. Marion County, home to Indianapolis, was created in 1822 when the new capital was laid out near the center of the state. Newton County, re-created in 1859 in the northwest, was the 92nd and last.

Indiana regions and the counties in each

Indiana has three natural regions. Northern Indiana was flattened by glaciers and holds the Lake Michigan counties (Lake, Porter, LaPorte), St. Joseph (South Bend), Elkhart and Allen (Fort Wayne). Central Indiana is the till plain around Indianapolis: Marion, Hamilton, Hendricks and Johnson. Southern Indiana is hilly, with Monroe (Bloomington), Brown, Clark and Floyd across from Louisville, and Vanderburgh (Evansville) in the far southwest on the Ohio River.

Notable places on the Indiana county map

Hoosier Hill, the state's highest point at 1,257 feet, is a small rise in a farm field in Wayne County. Indiana Dunes National Park stretches along Lake Michigan in Porter, Lake and LaPorte counties. The Indianapolis Motor Speedway, home of the Indianapolis 500, is in Marion County, and Brown County State Park is the largest state park in Indiana.

Indiana counties map: the biggest and smallest

Allen County is the largest county in Indiana, with 657 square miles of land, about 2% of the state. Ohio County is the smallest, at 86 square miles.

The smallest counties by land area are Ohio County (86 sq mi), Floyd County (149 sq mi) and Union County (161 sq mi).

Which counties in Indiana have the most people?

Marion County has the most people, about 981,628 in the Census Bureau's July 2024 estimate, or 14% of everyone in Indiana. The three biggest counties together hold 27% of the state's 6,924,275 people. Ohio County has the fewest, about 5,996.

The most crowded is Marion County, with about 2,475 people per square mile. The emptiest is Benton County, with about 22 people per square mile. Comparing the two is a quick way to show children that a big county on the map isn't always a big county in people.

What county is Indianapolis in?

Indianapolis, the capital of Indiana, is in Marion County. It's also the county with the most people. Indiana is called the Hoosier State, and it became the 19th state in 1816.

Counties on the Indiana border

Learning the edge of the map first gives children a frame to fill in. Indiana shares a border with Illinois, Kentucky, Michigan and Ohio.

How Indiana's counties compare with other states

Indiana ranks 38th among the 50 states in land area and 17th in population. Its average county covers about 389 square miles and holds about 75,264 people. Across the 50 states, the average county-level area covers about 1,139 square miles and holds about 109,381 people, so Indiana's counties are smaller than usual in size. Small counties pack more names into the same space, so zooming in helps.

Landmarks for learning the counties of Indiana

• Marion County (Indianapolis) is right in the middle of the state.
• Lake and Porter counties sit in the northwest corner on Lake Michigan.
• The Ohio River forms the winding southern border with Kentucky.

With 92 counties, work one region at a time: study it with names on, then take a Practice round and stop when you've found that group. Then print the Indiana county map worksheet to check that it sticks on paper.

All 92 Indiana counties

Every county on the map, A to Z, with its land area and July 2024 population estimate.

Indiana geography for homeschoolers

Pair this map with the Midwest states and capitals quiz and the US states quiz. If you teach at home, see homeschooling in indiana, and check indiana choice scholarship to see whether a program may help pay for Indiana history and geography curriculum. Each program decides what it covers.