By Whereig Editors, Reviewed by Mukesh Kumar| Updated On: May 02, 2026 | 20:16 ET
Map of Adams County - Adams County is a county located in the U.S. state of Indiana. Adams County Map showing cities, highways, important places and water bodies. Get Where is Adams County located in the map, major cities in Adams county, population, areas, and places of interest.
Map of Adams County, Indiana
About Adams County Map, Alabama: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.
Related Indiana Maps
About Adams County, Indiana
Carroll County is a county located in the U.S. state of Indiana. It`s county seat is Delphi. As per 2020 census, the population of Carroll County was 20444 and population density of Carroll was square miles. According to the United States Census Bureau, the county has a total area of 372 sq mi (963 km2). Carroll County was established on -26280.
Adams County Facts
| Continent | North America |
| Country | United States |
| State | Indiana |
| County Seat | Decatur |
| Largest City/Town | Decatur |
| Established | 1836 |
| Total Area | 339 sq mi |
| Land Area | 339 sq mi |
| Water Area | 0.4 sq mi |
| Population | 36,282 (Census 2020) |
| Population Density | 107 people per sq mi |
| Time Zone | Eastern Time Zone (ET) |
| Major Highways | US-27, US-33, IN-124, IN-218, IN-116 |
| Neighboring Counties | Allen County (north), Van Wert County, OH (east), Mercer County, OH (southeast), Jay County (south), Wells County (west) |
| Famous For | Agriculture, Amish communities, small-town charm |
| Top Attractions | Adams County Fairgrounds, Limberlost State Historic Site, Amish countryside |
| Official Website | https://www.co.adams.in.us/ |
Cities and Towns in Adams County, Indiana
- Decatur (county seat) – 10,037 (Census 2020)
- Berne – 4,173 (Census 2020)
- Geneva – 1,373 (Census 2020)
- Monroe – 842 (Census 2020)
Roads and Highways in Adams County, Indiana
Adams County is served by a mix of U.S. and state highways that connect it to nearby counties and regional cities in northeastern Indiana and western Ohio.
- US Route 27 – north-south route connecting Fort Wayne to Ohio through Decatur
- US Route 33 – runs northeast-southwest linking Decatur to Fort Wayne and Ohio
- Indiana State Road 124 – connects Monroe to Decatur and nearby rural areas
- Indiana State Road 218 – east-west route linking Berne to Portland
- Indiana State Road 116 – connects Geneva to Bluffton
Neighboring Counties of Adams County
- Allen County (north)
- Van Wert County, Ohio (east)
- Mercer County, Ohio (southeast)
- Jay County (south)
- Wells County (west)
Top Attractions in Adams County, Indiana
Adams County offers a peaceful rural setting with cultural heritage, outdoor spaces, and local events that reflect its Amish and agricultural roots.
- Limberlost State Historic Site – former home of author Gene Stratton-Porter with nature trails
- Adams County Fairgrounds – hosts one of the largest county fairs in the region
- Swiss Heritage Village – open-air museum highlighting Swiss and Amish history
- Riverside Center – community venue for events and performances
- Berne Clock Tower – iconic landmark in downtown Berne
- Adams County Parks – local parks offering trails, fishing, and picnic areas
- Amish Countryside Tours – scenic drives through Amish farms and communities
Distance from Adams County to Nearby Cities
- Adams County to Fort Wayne – 25 mi (40 km)
- Adams County to Indianapolis – 125 mi (201 km)
- Adams County to Toledo – 100 mi (161 km)
- Adams County to Dayton – 110 mi (177 km)
- Adams County to Chicago – 170 mi (274 km)
FAQs about Adams County
Adams County is located in northeastern Indiana along the Ohio border.
The county seat is Decatur, which is also the largest city in the county.
It is known for its Amish communities, farming, and small-town lifestyle.
Yes, the county is mostly rural with farmland and small towns.
The main highways include US-27, US-33, and several Indiana state roads.
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