Indiana became a state in 1816 and played a significant role in the growth of the U.S. Midwest through farming and industry. It has 92 counties.
10 Largest Counties in Indiana
1. Marion County
County Facts
- Population: 977,203 (2020 Census)
- Area Codes: 317, 463
- ZIP Codes: 46201-46298
- County Seat: Indianapolis
Geography and History
Marion County is located in central Indiana and spans 403 square miles, with the city of Indianapolis at its heart. The county was established in 1822 and named after Revolutionary War General Francis Marion. Indianapolis was selected as the state capital due to its central location, contributing to the county’s growth. Historically, Marion County’s economy was centered on agriculture and transportation, but with the Industrial Revolution, it evolved into a major manufacturing and commercial hub. The construction of the National Road and later the interstate highways helped solidify Indianapolis as a key transportation center. Today, Marion County is a mix of urban, suburban, and rural communities, with diverse industries, including healthcare, finance, and sports.
Colleges and Universities
- Indiana University–Purdue University Indianapolis (IUPUI): A public research university offering programs in health sciences, engineering, and business.
- Butler University: A private university known for its liberal arts, business, and pharmacy programs.
- University of Indianapolis: A private university offering a range of undergraduate and graduate degrees, particularly known for its nursing and physical therapy programs.
- Marian University: A private Catholic institution offering degrees in business, health sciences, and education, with a strong liberal arts core.
Major Landmarks
Marion County is home to several significant landmarks, including the Indianapolis Motor Speedway, where the famous Indy 500 race takes place annually. Monument Circle is the symbolic center of the city, featuring the Soldiers and Sailors Monument. The Children’s Museum of Indianapolis is the largest of its kind in the world. White River State Park offers cultural attractions like the Indianapolis Zoo, the Eiteljorg Museum of American Indians and Western Art, and Victory Field. Lucas Oil Stadium, home to the Indianapolis Colts, and Bankers Life Fieldhouse, home to the Indiana Pacers, are major sports venues. The Indiana State Capitol and Indianapolis Museum of Art at Newfields are also key cultural and historical landmarks.
2. Lake County
County Facts
- Population: 498,700 (2020 Census)
- Area Codes: 219
- ZIP Codes: 46303-46411
- County Seat: Crown Point
Geography and History
Lake County is located in northwestern Indiana, covering 498 square miles and bordering Lake Michigan. The county was established in 1837 and has played a significant role in Indiana’s industrial development, especially in steel production. Its location near Chicago and along the shores of Lake Michigan made it a key area for industrial growth in the late 19th and early 20th centuries, with cities like Gary becoming synonymous with steel manufacturing. Lake County’s economy was historically driven by heavy industry, but in recent decades, it has diversified into healthcare, education, and retail. The region is also known for its natural beauty, particularly along the Indiana Dunes National Park.
Colleges and Universities
- Purdue University Northwest: A public university with campuses in Hammond and Westville, offering programs in engineering, business, and nursing.
- Calumet College of St. Joseph: A private Catholic college located in Whiting, offering degrees in business, education, and criminal justice.
- Indiana University Northwest: A regional campus of Indiana University located in Gary, offering a wide range of undergraduate and graduate programs, including health sciences and liberal arts.
Major Landmarks
Lake County features the Indiana Dunes National Park, offering stunning views of Lake Michigan and numerous hiking trails through diverse ecosystems. Gary’s Union Station is a historic train station symbolizing the city’s industrial past. Crown Point Courthouse Square is a historic district with Victorian architecture, while Deep River Waterpark is a popular destination for families. The John Dillinger Museum in Crown Point tells the story of the famous gangster who escaped from the town’s jail. Whihala Beach offers scenic lakeshore views, and Majestic Star Casino in Gary adds to the entertainment offerings of the county.
3. Allen County
County Facts
- Population: 385,410 (2020 Census)
- Area Codes: 260
- ZIP Codes: 46706-46899
- County Seat: Fort Wayne
Geography and History
Allen County, located in northeastern Indiana, covers 660 square miles and is the largest county by area in the state. Established in 1824, it was named after Colonel John Allen, an officer in the War of 1812. Fort Wayne, the county seat, developed as a significant trading post due to its location at the confluence of three rivers. The area played a vital role in the development of canals, railroads, and eventually industry. By the 20th century, Allen County had become a center for manufacturing, particularly in automotive and defense industries. Today, Fort Wayne is a growing city with a diversified economy that includes healthcare, education, and logistics.
Colleges and Universities
- Purdue University Fort Wayne: A public university offering a range of undergraduate and graduate programs, including engineering, business, and education.
- Indiana Tech: A private university specializing in programs related to engineering, business, and criminal justice.
- University of Saint Francis: A private Catholic university known for its programs in nursing, business, and the arts.
- Ivy Tech Community College (Fort Wayne Campus): Offers vocational training, associate degrees, and pathways to four-year universities.
Major Landmarks
Allen County is home to Fort Wayne Children’s Zoo, considered one of the best zoos in the country. The Allen County War Memorial Coliseum hosts sporting events, concerts, and conventions. Parkview Field is home to the Fort Wayne TinCaps, a minor league baseball team. The Historic Embassy Theatre is a beautifully restored theater that hosts performances and events. Headwaters Park is a central spot for festivals and outdoor activities. The Fort Wayne Museum of Art showcases American art, and Science Central provides interactive science exhibits for children. Johnny Appleseed Park honors the legacy of John Chapman, the American folk hero.
4. Hamilton County
County Facts
- Population: 347,467 (2020 Census)
- Area Codes: 317, 463
- ZIP Codes: 46030-46082
- County Seat: Noblesville
Geography and History
Hamilton County, located just north of Indianapolis, covers 402 square miles. The county was established in 1823 and named after Alexander Hamilton, the first U.S. Secretary of the Treasury. Originally an agricultural area, Hamilton County has transformed into one of the fastest-growing regions in Indiana, driven by suburban development and the expansion of the Indianapolis metropolitan area. The county features a mix of affluent suburbs, historic towns, and growing commercial centers. With the growth of cities like Carmel, Fishers, and Westfield, the county has become a hub for business, technology, and healthcare.
Colleges and Universities
- Ivy Tech Community College (Noblesville Campus): Offers a range of associate degree and technical training programs, serving as a pathway to four-year universities.
- Indiana Wesleyan University (Carmel Education Center): A private Christian university offering adult education programs in business, nursing, and counseling.
- Purdue Polytechnic (Anderson Campus): Offers technology-focused programs, with a focus on engineering and computer sciences.
Major Landmarks
Hamilton County is home to Conner Prairie, a living history museum that brings Indiana’s pioneer past to life with interactive exhibits and historical reenactments. Ruoff Music Center in Noblesville is a major outdoor concert venue that attracts national acts. Grand Park in Westfield is a massive sports complex hosting youth and professional sporting events. The Monon Trail, a popular biking and walking path, runs through the county, connecting towns like Carmel and Westfield. Carmel Arts & Design District is known for its galleries, restaurants, and shopping. Noblesville Square preserves the county’s historic charm with shops and restaurants surrounding the courthouse.
5. St. Joseph County
County Facts
- Population: 272,912 (2020 Census)
- Area Codes: 574
- ZIP Codes: 46530-46699
- County Seat: South Bend
Geography and History
St. Joseph County is located in northern Indiana, bordering Michigan and covering 467 square miles. The county was established in 1830 and named after the St. Joseph River, which flows through the region. South Bend, the county seat, developed as a major industrial center in the 19th and early 20th centuries, particularly with the rise of Studebaker automobiles. The University of Notre Dame, located just outside South Bend, has played a central role in the county’s cultural and economic development. Today, St. Joseph County has diversified its economy, with education, healthcare, and manufacturing all playing key roles.
Colleges and Universities
- University of Notre Dame: A world-renowned private Catholic research university offering a wide range of programs, including law, business, and engineering.
- Indiana University South Bend: A public regional campus offering undergraduate and graduate degrees in liberal arts, business, and health sciences.
- Saint Mary’s College: A private women’s college offering liberal arts programs and known for its strong academics and connection to Notre Dame.
- Holy Cross College: A private Catholic college offering undergraduate degrees in liberal arts and business.
Major Landmarks
St. Joseph County’s most famous landmark is the University of Notre Dame, known for its iconic Golden Dome and Notre Dame Stadium, where the Fighting Irish football team plays. The Studebaker National Museum showcases the history of the Studebaker Corporation and its impact on South Bend. Potawatomi Zoo, Indiana’s oldest zoo, offers family-friendly exhibits. The South Bend River Lights illuminate the St. Joseph River with a beautiful light display. East Race Waterway is a popular spot for kayaking and whitewater rafting. Tippecanoe Place, once the home of the Studebaker family, is now a fine dining establishment and historical landmark.
6. Elkhart County
County Facts
- Population: 207,047 (2020 Census)
- Area Codes: 574
- ZIP Codes: 46507-46574
- County Seat: Goshen
Geography and History
Elkhart County is located in northern Indiana, covering 467 square miles, and is known as a center for manufacturing, particularly in the recreational vehicle (RV) industry. Established in 1830, the county was named after the Elkhart River. The region was originally an agricultural area, but the growth of the RV industry in the 20th century transformed Elkhart County into a major manufacturing hub. The Amish community also plays a significant role in the county’s culture and economy, particularly in areas like Middlebury and Shipshewana. Today, Elkhart County balances its industrial base with agriculture and tourism.
Colleges and Universities
- Goshen College: A private liberal arts college known for its programs in peace studies, nursing, and environmental science, with a strong Mennonite tradition.
- Ivy Tech Community College (Elkhart County Campus): Offers associate degrees and vocational training, providing career education in areas like healthcare, business, and technology.
Major Landmarks
Elkhart County is home to the RV/MH Hall of Fame, a museum dedicated to the history of the recreational vehicle and manufactured housing industries. Amish Acres in Nappanee offers a look into Amish life with tours, dining, and entertainment. Shipshewana is a popular tourist destination known for its Amish crafts, food, and flea market. Elkhart’s Wellfield Botanic Gardens offers beautiful landscapes and themed gardens. The Goshen Theater is a historic venue that hosts performances and events. The Elkhart Jazz Festival is one of the largest jazz festivals in the Midwest, drawing musicians and visitors from across the country.
7. Hendricks County
County Facts
- Population: 174,788 (2020 Census)
- Area Codes: 317, 463
- ZIP Codes: 46112-46231
- County Seat: Danville
Geography and History
Hendricks County is located in central Indiana, just west of Indianapolis, and covers 408 square miles. The county was established in 1824 and named after Indiana Governor William Hendricks. Historically an agricultural area, Hendricks County has seen significant suburban growth in recent decades as part of the expansion of the Indianapolis metropolitan area. Today, the county features a mix of suburban communities, rural farmland, and commercial development, particularly in towns like Avon, Plainfield, and Brownsburg. The county has benefited from its proximity to Indianapolis, with residents commuting to the city for work while enjoying the quieter suburban lifestyle.
Colleges and Universities
- Ivy Tech Community College (Avon Campus): Offers vocational and technical training programs, as well as associate degrees.
- Indiana Wesleyan University (West Indianapolis Education Center): A Christian university offering adult education and graduate programs, with a focus on business, education, and health care.
Major Landmarks
Hendricks County is home to Hendricks Regional Health YMCA, a state-of-the-art fitness and wellness facility. The Hendricks County 4-H Fairgrounds hosts various events throughout the year, including the popular county fair. McCloud Nature Park offers hiking trails, birdwatching, and educational programs in a scenic natural setting. Beasley’s Orchard in Danville provides family-friendly activities like apple picking, hayrides, and a corn maze in the fall. Lucas Oil Raceway in Brownsburg is a major venue for motorsports events, including drag racing and the NHRA U.S. Nationals. Historic Downtown Danville features shops, restaurants, and the Royal Theater, a restored movie theater.
8. Vanderburgh County
County Facts
- Population: 180,136 (2020 Census)
- Area Codes: 812, 930
- ZIP Codes: 47701-47750
- County Seat: Evansville
Geography and History
Vanderburgh County is located in southwestern Indiana, covering 236 square miles along the Ohio River. Established in 1818, the county was named after Captain Henry Vanderburgh, a Revolutionary War veteran. Evansville, the county seat, developed as an important river port and industrial center. By the 20th century, the county became a hub for manufacturing, particularly in the automotive and appliance industries. Today, Evansville is the third-largest city in Indiana, with a diversified economy that includes healthcare, education, and logistics. The county’s location on the Ohio River has also made it a transportation and commercial hub.
Colleges and Universities
- University of Evansville: A private liberal arts university known for its programs in engineering, nursing, and the performing arts.
- University of Southern Indiana: A public university offering a range of undergraduate and graduate programs, particularly strong in business, health sciences, and education.
- Ivy Tech Community College (Evansville Campus): Offers associate degrees and vocational programs, focusing on technical education and career readiness.
Major Landmarks
Vanderburgh County is home to Mesker Park Zoo and Botanic Garden, which features animal exhibits and lush gardens. The Evansville Museum of Arts, History, and Science offers a variety of exhibits on art, history, and science, as well as a planetarium. Angel Mounds State Historic Site is one of the best-preserved prehistoric Native American sites in the country. Bosse Field is one of the oldest professional baseball stadiums still in use, home to the Evansville Otters. Wesselman Woods Nature Preserve is a large urban forest offering walking trails and environmental education. Ford Center in downtown Evansville hosts concerts, sporting events, and performances.
9. Porter County
County Facts
- Population: 173,215 (2020 Census)
- Area Codes: 219
- ZIP Codes: 46301-46385
- County Seat: Valparaiso
Geography and History
Porter County is located in northwestern Indiana, covering 522 square miles along the southern shore of Lake Michigan. The county was established in 1836 and named after Commodore David Porter, a naval hero in the War of 1812. Historically, the county’s economy was based on agriculture and trade, with Valparaiso emerging as a key commercial center. Porter County’s location near Lake Michigan and Chicago has also contributed to its growth. In recent decades, the county has experienced suburban development while preserving its natural beauty, particularly around the Indiana Dunes.
Colleges and Universities
- Valparaiso University: A private Lutheran university known for its programs in law, engineering, and the liberal arts.
- Purdue University Northwest (Westville Campus): Offers undergraduate and graduate programs in fields like business, nursing, and technology.
- Ivy Tech Community College (Valparaiso Campus): Provides vocational and technical training, as well as associate degree programs.
Major Landmarks
Porter County’s most famous landmark is the Indiana Dunes National Park, offering stunning views of Lake Michigan, hiking trails, and diverse ecosystems. Valparaiso University’s Chapel of the Resurrection is one of the largest collegiate chapels in the country, known for its striking architecture. Taltree Arboretum & Gardens (now Gabis Arboretum) offers gardens, nature trails, and outdoor concerts. Memorial Opera House in Valparaiso hosts performances and events throughout the year. Porter County Fairgrounds is home to the annual county fair and other community events. Chesterton European Market draws visitors with its fresh produce, artisan goods, and local crafts.
10. Madison County
County Facts
- Population: 129,569 (2020 Census)
- Area Codes: 765
- ZIP Codes: 46001-46070
- County Seat: Anderson
Geography and History
Madison County is located in central Indiana, covering 452 square miles. The county was established in 1823 and named after James Madison, the fourth President of the United States. Anderson, the county seat, developed as an industrial city in the late 19th and early 20th centuries, particularly with the rise of General Motors plants. At its peak, the automotive industry dominated the local economy, but after significant industrial decline in the 1980s, the county has focused on revitalization efforts. Today, Madison County features a mix of industrial heritage, suburban development, and rural landscapes.
Colleges and Universities
- Anderson University: A private Christian university affiliated with the Church of God, offering programs in business, education, and music.
- Ivy Tech Community College (Anderson Campus): Offers associate degrees and technical training, focusing on workforce development and vocational education.
Major Landmarks
Madison County is known for Mounds State Park, which features Native American earthworks, hiking trails, and nature programs. The Paramount Theatre Centre & Ballroom in Anderson is a restored 1920s theater that hosts concerts, films, and community events. Anderson Speedway is a popular short track for auto racing. Hoosier Park Racing & Casino offers horse racing, gaming, and entertainment. The Anderson Museum of Art showcases local and regional artists, while Shadyside Park provides opportunities for outdoor recreation, including fishing, walking trails, and playgrounds.