Cities and Towns in Warren County, Illinois

Founded in 1825, Warren County is one of 102 counties in the state of Illinois. Historically, Warren County was formed from Schuyler County. The city of Monmouth is the county seat. With FIPS code of 187, Warren County has a population of 16,531 and area of 542 square miles (1,404 km²).

List of all cities in Warren County, IL alphabetically

City/Town	Postal Code	Area Code
Berwick, IL	61417	309
Cameron, IL	61423	309
Eleanor, IL	61453	309
Ellison, IL	61478	309
Gerlaw, IL	61435	309
Kirkwood, IL	61447	309
Larchland, IL	61462	309
Little York, IL	61453	309
Monmouth, IL	61462	309
Ormonde, IL	61462	309
Roseville, IL	61473	309
Rozetta, IL	61447	309
Smithshire, IL	61478	309
Swan Creek, IL	61473	309
Tompkins, IL	61447	309
Youngstown, IL	61473	309

Major Cities and Towns in Warren County, Illinois

1. Monmouth

Area, Population, Zip Codes, Latitude and Longitude

• Area: 4.24 square miles
• Population: Approximately 8,900 (2020 Census)
• Zip Codes: 61462
• Latitude: 40.9112° N
• Longitude: 90.6476° W

Location and History

Monmouth is the county seat of Warren County, located in western Illinois, approximately 20 miles south of the Quad Cities. The city was founded in 1831 and quickly became an agricultural hub due to the fertile lands surrounding it. Known as the “Maple City” for its abundance of maple trees, Monmouth grew steadily through the 19th and early 20th centuries. The city played a significant role in Illinois history, being the site of one of the Lincoln-Douglas debates in 1858. Monmouth College, established in 1853, has been a cornerstone of the city, contributing to its reputation as a center of higher learning and culture.

Major Schools and Landmarks

Monmouth is home to Monmouth College, a private liberal arts institution, as well as Monmouth-Roseville High School, which serves local students. The Warren County Courthouse, an architectural gem dating back to 1895, is one of the most notable landmarks in the city. The Monmouth City Park, featuring the historic Pattee Pavilion, is a popular gathering place for residents. Another key landmark is the Gibson Woods Golf Course, offering recreational opportunities for golfers. The Buchanan Center for the Arts, located downtown, hosts exhibitions, performances, and community art programs, enriching the cultural life of the city.

2. Roseville

Area, Population, Zip Codes, Latitude and Longitude

• Area: 0.87 square miles
• Population: Approximately 950 (2020 Census)
• Zip Codes: 61473
• Latitude: 40.7320° N
• Longitude: 90.6618° W

Location and History

Roseville is located in the southern part of Warren County, about 10 miles south of Monmouth. The town was established in the mid-19th century and developed as a small farming community. Roseville’s location along the Peoria and Oquawka Railroad contributed to its early growth, allowing farmers to transport their goods more efficiently. Over time, the town maintained its agricultural base while serving as a residential and service hub for the surrounding rural area. Although Roseville is smaller than many of its neighboring towns, it has a strong sense of community and a rich agricultural heritage.

Major Schools and Landmarks

Roseville is part of the Monmouth-Roseville Community Unit School District 238, with Roseville Elementary School serving younger students and Monmouth-Roseville High School providing secondary education. The town’s key landmarks include the Roseville Park District, which offers recreational facilities and hosts local events, and the historic Roseville Opera House, which has been a centerpiece of the community since its construction in the early 1900s. Roseville is also known for its annual Fall Festival, which brings together residents for a celebration of the town’s agricultural roots, featuring parades, entertainment, and local food vendors.

3. Alexis

Area, Population, Zip Codes, Latitude and Longitude

• Area: 0.51 square miles
• Population: Approximately 830 (2020 Census)
• Zip Codes: 61412
• Latitude: 41.0648° N
• Longitude: 90.5632° W

Location and History

Alexis is a small village located in the northern part of Warren County, near the border with Mercer County. Founded in 1870, Alexis developed as a railroad town, with the Chicago, Burlington, and Quincy Railroad running through the village. The village was originally named Alexandria, but due to postal confusion with other towns of the same name, it was changed to Alexis. Agriculture has always been the backbone of the local economy, with nearby farms producing corn, soybeans, and livestock. Alexis has retained its rural character and remains a tight-knit farming community.

Major Schools and Landmarks

Alexis is served by the United Community Unit School District 304, with United Junior High and United High School located nearby in Monmouth. The Alexis-North Henderson Community Center is a central gathering place for local residents, hosting community events and activities. The Alexis Field Days, held annually, is a major local event, featuring carnival rides, a parade, and various agricultural exhibits. The village park offers recreational facilities such as playgrounds and picnic areas. Alexis also has a historic train depot, a reminder of its railroad past, which now serves as a community landmark.

4. Kirkwood

Area, Population, Zip Codes, Latitude and Longitude

• Area: 0.39 square miles
• Population: Approximately 700 (2020 Census)
• Zip Codes: 61447
• Latitude: 40.8695° N
• Longitude: 90.7591° W

Location and History

Kirkwood is a small village located in the western part of Warren County, about 8 miles west of Monmouth. Established in the mid-1800s, Kirkwood grew as a small agricultural town, with the railroad playing a significant role in its development. The town was originally named Young America but was later renamed Kirkwood after a prominent local family. Kirkwood has always been a farming community, with much of its economy tied to corn, soybean, and livestock production. Despite its small size, Kirkwood has maintained a stable population and remains an important part of Warren County’s rural landscape.

Major Schools and Landmarks

Kirkwood is part of the United Community Unit School District 304, with students attending nearby schools in Monmouth and Alexis. One of the town’s most notable landmarks is the Kirkwood United Methodist Church, a historic building that has been a cornerstone of the community for over a century. The town’s annual Fourth of July Celebration is a major event, featuring fireworks, parades, and community picnics. Kirkwood Park offers recreational facilities, including playgrounds and sports fields, and serves as a hub for local gatherings and family activities.

5. Little York

Area, Population, Zip Codes, Latitude and Longitude

• Area: 0.27 square miles
• Population: Approximately 300 (2020 Census)
• Zip Codes: 61453
• Latitude: 41.0023° N
• Longitude: 90.7520° W

Location and History

Little York is a small village in the northwestern part of Warren County, close to the Illinois-Iowa border. The village was founded in the mid-1800s and named after the town of York in Pennsylvania, as many of its early settlers hailed from that region. Little York grew as a small agricultural community, with farming as its mainstay. The village experienced moderate growth during the late 19th and early 20th centuries, benefiting from its location along local transportation routes. Today, Little York remains a quiet, rural town with deep ties to its agricultural heritage.

Major Schools and Landmarks

Little York is also served by the United Community Unit School District 304, with local students attending schools in nearby towns such as Monmouth and Alexis. The village’s main landmark is the Little York United Presbyterian Church, a historic church that has been a part of the community for over a century. Little York also hosts the annual York Days Festival, which celebrates the town’s history with parades, food stalls, and family-friendly activities. The surrounding farmland and rolling countryside offer scenic views and outdoor recreation opportunities for residents and visitors alike.