Cities and Towns in Clinton County, Illinois
Founded in 1824, Clinton County is one of 102 counties in the state of Illinois. Historically, Clinton County was formed from Washington, Bond, and Fayette County. The city of Carlyle is the county seat. With FIPS code of 27, Clinton County has a population of 36,793 and area of 474 square miles (1,228 km²).
List of all cities in Clinton County, IL alphabetically
| City/Town | Postal Code | Area Code |
| Albers, IL | 62215 | 618/730 |
| Aviston, IL | 62216 | 618/730 |
| Bartelso, IL | 62218 | 618/730 |
| Beckemeyer, IL | 62219 | 618/730 |
| Boulder, IL | 62231 | 618/730 |
| Breese, IL | 62216 | 618/730 |
| 62230 | 618/730 | |
| Carlyle, IL | 62231 | 618/730 |
| Clement, IL | 62252 | 618/730 |
| Damiansville, IL | 62215 | 618/730 |
| Ferrin, IL | 62231 | 618/730 |
| Germantown, IL | 62245 | 618/730 |
| Hoffman, IL | 62250 | 618/730 |
| Huey, IL | 62252 | 618/730 |
| Irishtown, IL | 62253 | 618/730 |
| Keyesport, IL | 62253 | 618/730 |
| New Baden, IL | 62265 | 618/730 |
| New Memphis, IL | 62266 | 618/730 |
| Posey, IL | 62231 | 618/730 |
| Royal Lake, IL | 62231 | 618/730 |
| Saint Morgan, IL | 62293 | 618/730 |
| Saint Rose, IL | 62230 | 618/730 |
| Santa Fe, IL | 62218 | 618/730 |
| Shattuc, IL | 62231 | 618/730 |
| Shatuc, IL | 62231 | 618/730 |
| Sugar Creek, IL | 62293 | 618/730 |
| Tamalco, IL | 62253 | 618/730 |
| Trenton, IL | 62216 | 618/730 |
| 62293 | 618/730 |
Major Cities and Towns in Clinton County, Illinois
Carlyle
Area, Population, and Zip Codes
- Area: 3.50 square miles
- Population: 3,259 (2023 estimate)
- Zip Codes: 62231
- Latitude: 38.6125° N
- Longitude: 89.3720° W
Location and History
Carlyle, the county seat of Clinton County, is located in southern Illinois along the banks of the Kaskaskia River. Founded in 1818, Carlyle holds historical significance as one of the oldest communities in the state. It became the county seat in 1825 and developed as a trade and transportation hub due to its location near the river. Carlyle grew steadily over the years, with agriculture, particularly corn and soybean farming, playing a significant role in its economy. The city is also home to Carlyle Lake, the largest man-made lake in Illinois, which was completed by the U.S. Army Corps of Engineers in the 1960s to control flooding and provide recreational opportunities.
Major Schools and Landmarks
Carlyle is served by Carlyle Community Unit School District 1, with Carlyle High School being the primary educational institution. The city’s most prominent landmark is Carlyle Lake, which offers opportunities for boating, fishing, camping, and hiking, making it a major recreational destination in the region. The General Dean Suspension Bridge, built in 1859, is another historic landmark, offering scenic views of the Kaskaskia River. Carlyle’s downtown area features charming shops and restaurants, along with the Clinton County Courthouse, which is a historic centerpiece of the community.
Breese
Area, Population, and Zip Codes
- Area: 2.71 square miles
- Population: 4,479 (2023 estimate)
- Zip Codes: 62230
- Latitude: 38.6103° N
- Longitude: 89.5221° W
Location and History
Breese is located in western Clinton County, approximately 45 miles east of St. Louis, Missouri. The town was founded in 1855 and named after Sidney Breese, a prominent Illinois senator and judge. Breese grew as a result of the railroad expansion in the mid-19th century, which helped the town flourish as an agricultural and industrial center. Over the years, Breese has maintained its agricultural roots, with corn, soybeans, and dairy farming as key economic drivers. The town has a strong German heritage, which is reflected in its local festivals and community traditions.
Major Schools and Landmarks
Breese is part of Breese Elementary School District 12 and Central Community High School District 71, with Central High School serving local students. Key landmarks in Breese include Breese City Park, which hosts various community events and provides recreational facilities such as playgrounds, tennis courts, and walking paths. The town is also home to Mater Dei Catholic High School, a prominent private school known for its academic and athletic programs. Breese celebrates its heritage with the annual Clinton County Fair, showcasing local agriculture, crafts, and entertainment.
Aviston
Area, Population, and Zip Codes
- Area: 1.37 square miles
- Population: 2,235 (2023 estimate)
- Zip Codes: 62216
- Latitude: 38.6064° N
- Longitude: 89.6031° W
Location and History
Aviston is a small town located in the western part of Clinton County, about 40 miles east of St. Louis. Established in 1864, Aviston began as a farming community with a strong German Catholic influence, which continues to be a central part of its cultural identity. The arrival of the railroad helped Aviston grow, and agriculture remained the town’s economic backbone, with corn, soybeans, and dairy farming as major contributors. Over the years, Aviston has grown into a residential community while maintaining its rural charm and strong sense of local tradition.
Major Schools and Landmarks
Aviston is served by Aviston Elementary School District 21, and high school students attend Central High School in nearby Breese. The town’s landmarks include Aviston Community Park, which provides a range of recreational facilities, including sports fields, playgrounds, and picnic areas. Aviston is known for its annual Aviston Homecoming, a local festival that celebrates the town’s German heritage with food, music, and parades. The St. Francis of Assisi Catholic Church, a beautiful historic church, stands as a testament to the town’s deep religious and cultural roots.
Trenton
Area, Population, and Zip Codes
- Area: 2.39 square miles
- Population: 2,648 (2023 estimate)
- Zip Codes: 62293
- Latitude: 38.6075° N
- Longitude: 89.6829° W
Location and History
Trenton is located in western Clinton County, near the border with St. Clair County, and about 30 miles east of St. Louis. Founded in the 1850s, Trenton was originally settled by German immigrants, and its development was closely tied to the railroad. The town grew as an agricultural and coal mining center, benefiting from its proximity to rail lines that facilitated trade and transport. Trenton’s economy has since diversified, but it retains its agricultural roots. The town’s German heritage is still visible in its cultural events and local traditions.
Major Schools and Landmarks
Trenton is served by Wesclin Community Unit School District 3, with Wesclin High School located in nearby Trenton. The town’s major landmarks include Trenton City Park, which offers sports fields, playgrounds, and a community swimming pool. The Trenton Historical Museum preserves the town’s rich history, particularly its German roots and role in coal mining. Trenton’s downtown area features several historic buildings and hosts the Trenton Fest, an annual celebration with food, live music, and carnival rides, bringing the community together.
New Baden
Area, Population, and Zip Codes
- Area: 2.33 square miles
- Population: 3,255 (2023 estimate)
- Zip Codes: 62265
- Latitude: 38.5359° N
- Longitude: 89.7009° W
Location and History
New Baden is located in the southwestern part of Clinton County, straddling the border with St. Clair County. The town was founded in 1866 by German immigrants and named after the Baden region in Germany, reflecting the heritage of its early settlers. New Baden grew as an agricultural community, with the arrival of the railroad providing a boost to the local economy. Over time, New Baden has developed into a suburban community with a mix of residential, commercial, and agricultural areas. Its location near Interstate 64 provides easy access to nearby cities like St. Louis.
Major Schools and Landmarks
New Baden is part of Wesclin Community Unit School District 3, with Wesclin High School serving local students. Major landmarks in New Baden include New Baden Park, which features sports fields, playgrounds, and picnic areas, as well as hosting the town’s annual New Baden Fall Festival, a celebration of local culture and heritage. The Heil Mansion, a historic home built in the late 19th century, stands as a reminder of the town’s rich history. New Baden’s proximity to Scott Air Force Base also influences its economy and local culture.
Germantown
Area, Population, and Zip Codes
- Area: 0.90 square miles
- Population: 1,320 (2023 estimate)
- Zip Codes: 62245
- Latitude: 38.5545° N
- Longitude: 89.5376° W
Location and History
Germantown is located in western Clinton County, approximately 35 miles east of St. Louis. Founded in 1833, Germantown was one of the earliest settlements in the county, established primarily by German Catholic immigrants. Agriculture, particularly corn and livestock farming, has long been the backbone of the local economy. The town’s name reflects its founders’ origins, and its German heritage remains a key aspect of its identity today. Germantown’s strong sense of community and rural charm have helped it maintain its character while slowly growing over the years.
Major Schools and Landmarks
Germantown is part of Germantown School District 60, with local students attending Mater Dei Catholic High School in nearby Breese for secondary education. The town’s key landmarks include St. Boniface Catholic Church, a historic church that serves as the focal point of the community, both spiritually and culturally. Germantown Park offers playgrounds, ball fields, and picnic areas, providing a space for outdoor activities and community events. The town’s annual St. Boniface Church Picnic is a beloved tradition, featuring food, games, and entertainment, celebrating the town’s strong German Catholic roots.