Cities and Towns in Adams County, Indiana

Founded on Feb 7, 1836, Adams County is one of 92 counties in the state of Indiana. Historically, Adams County was formed from Adams New Purchase. The city of Decatur is the county seat. With FIPS code of 1, Adams County has a population of 35,961 and area of 339 square miles (878 km²).

List of all cities in Adams County, IN alphabetically

City/Town Postal Code Area Code
Barrington Woods, IN 46733 260
Berne, IN 46711 260
46769 260
Bo Bo, IN 46733 260
Ceylon, IN 46740 260
Coppess Corner, IN 46772 260
Decatur, IN 46733 260
Geneva, IN 46740 260
Hondorus, IN 46733 260
Linn Grove, IN 46711 260
46769 260
Monroe, IN 46772 260
Peterson, IN 46733 260
Pleasant Mills, IN 46780 260
Preble, IN 46782 260
Sunny Acres, IN 46733 260
Yost Woods, IN 46733 260

Major Cities and Towns in Adams County, Indiana

Decatur

Location and History

Decatur, the county seat of Adams County, is located in northeastern Indiana, close to the Ohio state line. Founded in 1836, Decatur was named after the American naval hero Stephen Decatur and quickly became the administrative center of the county. The town’s economy historically centered around agriculture, but it also developed strong manufacturing industries, particularly with the arrival of the Pennsylvania Railroad in the late 19th century. Decatur’s growth as a regional hub for both farming and manufacturing has continued into the present day, with a diversified economy that includes manufacturing, healthcare, and retail services.

Area, Population, Zip Codes, Latitude and Longitude

  • Area: 6.11 square miles
  • Population: Approximately 9,900 (as of 2020 census)
  • Zip Codes: 46733
  • Latitude: 40.8303° N
  • Longitude: 84.9297° W

Major Schools and Landmarks

Decatur is served by the North Adams Community Schools, with Bellmont High School being the major high school in the area. Landmarks in the city include the Adams County Courthouse, a historic building dating back to 1873 that showcases striking architecture. The St. Mary of the Assumption Catholic Church is another notable structure, reflecting the town’s rich religious heritage. Decatur is also home to the Riverside Center, a popular venue for community events and concerts. Residents and visitors enjoy outdoor activities at Lehman Park and nearby Kekionga Lake, where fishing, hiking, and family picnics are popular.


Berne

Location and History

Berne is a town located in southern Adams County, known for its strong Swiss heritage. Founded in 1852 by Mennonite immigrants from Switzerland, Berne was named after the Swiss capital, as many of the settlers came from that region. The town grew around the railroad, which brought increased trade and development to the area. Today, Berne is celebrated for its Swiss architecture, cultural festivals, and the preservation of its European roots. Agriculture remains a significant part of Berne’s economy, although the town has also attracted manufacturing and small businesses.

Area, Population, Zip Codes, Latitude and Longitude

  • Area: 2.08 square miles
  • Population: Approximately 4,300 (as of 2020 census)
  • Zip Codes: 46711
  • Latitude: 40.6575° N
  • Longitude: 84.9553° W

Major Schools and Landmarks

Berne is served by South Adams Schools, with South Adams High School being the main educational institution. The town’s most famous landmark is the Muensterberg Plaza and Clock Tower, a Swiss-style clock tower that has become a symbol of Berne’s heritage. The annual Swiss Days Festival celebrates the town’s cultural roots with parades, traditional Swiss music, and crafts. Another key site is the Swiss Heritage Village, an open-air museum that offers a glimpse into the early life of Swiss settlers. Limberlost State Historic Site, located nearby, attracts nature lovers with its walking trails and historical significance tied to famed author Gene Stratton-Porter.


Geneva

Location and History

Geneva is a small town located in southern Adams County, near the Wabash River. Founded in the late 19th century, the town grew as a hub for agriculture and commerce, taking advantage of its proximity to fertile farmland and the railroad. Geneva was named after Geneva, Switzerland, reflecting the Swiss influence in the area due to the nearby settlement of Berne. While Geneva has remained a small community, it has continued to serve as a residential and agricultural center, with local businesses supporting the surrounding farming industry.

Area, Population, Zip Codes, Latitude and Longitude

  • Area: 1.28 square miles
  • Population: Approximately 1,200 (as of 2020 census)
  • Zip Codes: 46740
  • Latitude: 40.5914° N
  • Longitude: 84.9603° W

Major Schools and Landmarks

Geneva is part of the South Adams Schools district, with students attending schools in nearby Berne. The town is best known for its connection to Limberlost State Historic Site, the home of naturalist and author Gene Stratton-Porter, whose work helped preserve Indiana’s natural wetlands. Limberlost provides hiking trails and educational programs about local wildlife and conservation. Additionally, Geneva’s picturesque small-town atmosphere and historic downtown area offer a glimpse into rural life in the Midwest. The town’s connection to both agricultural and literary history makes it a unique destination for visitors and a quiet, community-oriented place for residents.


Monroe

Location and History

Monroe is a small town located in the central part of Adams County, just north of Berne. Founded in the mid-19th century, Monroe developed primarily as an agricultural community, with its economy based on farming and local trade. The town is named after James Monroe, the fifth president of the United States, reflecting the early settlers’ patriotic ties. Monroe has remained a small, close-knit community, where agriculture continues to be the primary industry. Its proximity to Berne and Decatur provides residents with access to larger markets and services while retaining its rural charm.

Area, Population, Zip Codes, Latitude and Longitude

  • Area: 0.27 square miles
  • Population: Approximately 800 (as of 2020 census)
  • Zip Codes: 46772
  • Latitude: 40.7464° N
  • Longitude: 84.9403° W

Major Schools and Landmarks

Monroe is served by the Adams Central Community Schools, with Adams Central High School located nearby. The town’s main landmark is the Monroe United Methodist Church, which has served as a center of community life for generations. Monroe is surrounded by fertile farmland, and its landscape offers scenic views of rural Indiana. The town’s small park provides recreational space for local families, and its quiet streets and historical buildings reflect its agricultural heritage. Monroe’s rural environment and strong community spirit make it a peaceful place to live.


Pleasant Mills

Location and History

Pleasant Mills is a small unincorporated community located in eastern Adams County, near the Ohio state line. The community was established in the early 19th century as a milling center, with its name derived from the early mills that operated along the local streams. Although Pleasant Mills never grew into a large town, it played a key role in the local agricultural economy, serving farmers in the area. Today, Pleasant Mills is a quiet, rural community with deep historical roots, where farming and small-scale industry continue to support the local economy.

Area, Population, Zip Codes, Latitude and Longitude

  • Area: Not officially designated
  • Population: Approximately 300 (estimated)
  • Zip Codes: 46733 (shares with Decatur)
  • Latitude: 40.8195° N
  • Longitude: 84.8311° W

Major Schools and Landmarks

Pleasant Mills is part of the North Adams Community Schools district, with students attending schools in nearby Decatur. The community is primarily known for its agricultural surroundings and scenic countryside, with several historic farms and homes that reflect its early settlement. The nearby Wabash River provides opportunities for fishing and outdoor activities, and Pleasant Mills’ quiet rural environment makes it an ideal location for those seeking a peaceful lifestyle. Though small, the community’s connection to the region’s agricultural past remains a defining feature of Pleasant Mills.