Cities and Towns in Mercer County, Missouri
Founded in 1845, Mercer County is one of 114 counties in the state of Missouri. Historically, Mercer County was formed from Grundy County. The city of Princeton is the county seat. With FIPS code of 129, Mercer County has a population of 3,488 and area of 454 square miles (1,176 km²).
List of all cities in Mercer County, MO alphabetically
| City/Town | Postal Code | Area Code |
| Mercer, MO | 64661 | 660 |
| Princeton, MO | 64673 | 660 |
Major Cities and Towns in Mercer County, Missouri
Princeton
Area, Population, Zip Codes, Latitude, and Longitude
- Area: 0.55 sq mi
- Population: 1,045 (2020 Census)
- Zip Code: 64673
- Latitude: 40.0431° N
- Longitude: 93.6082° W
Location and History
Princeton is the county seat of Mercer County, located in the northwestern part of Missouri, about 10 miles south of the Iowa border. The town was established in 1845 and named after Princeton, New Jersey, due to the influence of early settlers who hailed from that area. Princeton developed rapidly in the mid-1800s, owing to its position along the important transportation route between the nearby cities of Des Moines and St. Joseph. The town became a thriving center for agriculture, particularly for livestock and grain, as settlers built up the local economy with farming as the backbone of the region. During the Civil War, Princeton’s location made it a site of interest, though the town saw no significant battles. In the early 20th century, as transportation methods evolved, Princeton continued to prosper as a commercial center for the surrounding farming communities. The town’s strong agricultural history continues to influence its economy and culture today. Princeton is known for its rural charm and welcoming community, with agriculture remaining a significant part of life.
Major Schools and Landmarks
Princeton is served by the Princeton R-V School District, which includes Princeton High School, Princeton Middle School, and several elementary schools. The district is known for its small but dedicated teaching staff and strong community involvement in school activities. One of the town’s most notable landmarks is the Mercer County Courthouse, a historic building located in the town square. The courthouse is a symbol of the town’s importance as a regional hub for legal and governmental affairs. Another key landmark is the Princeton City Park, which features picnic areas, walking trails, and a playground, making it a popular spot for outdoor gatherings and recreation. The town also celebrates its agricultural heritage with annual events such as the Mercer County Fair, which showcases livestock, local crafts, and community activities. Princeton’s proximity to the Grand River offers additional recreational opportunities, including fishing, boating, and nature exploration.
Milan
Area, Population, Zip Codes, Latitude, and Longitude
- Area: 1.22 sq mi
- Population: 1,711 (2020 Census)
- Zip Code: 63556
- Latitude: 40.0481° N
- Longitude: 93.1887° W
Location and History
Milan is located in the southwestern corner of Mercer County, Missouri, approximately 15 miles southeast of Princeton. The town was established in 1855 and was named after the Italian city of Milan, reflecting the aspirations of the early settlers who were inspired by European culture. Milan grew rapidly during its early years, especially after the arrival of the railroad in the late 1800s, which allowed the town to become a transportation hub for the region’s agricultural products. The development of railroads helped Milan establish a thriving economy centered around grain and livestock farming. The town also became a regional center for trade and commerce as businesses catered to the surrounding farming communities. Milan’s historical significance is tied to its role as a transportation and commercial center in the late 19th and early 20th centuries, although the railroad gradually lost its importance as trucking and highways became more prevalent. Today, Milan retains much of its small-town charm and continues to be a center for agriculture and local commerce in Mercer County.
Major Schools and Landmarks
Milan is served by the Milan C-2 School District, which includes Milan High School, Milan Middle School, and the elementary school. The district is known for its small, tight-knit educational community, with a strong emphasis on student success both in the classroom and in extracurricular activities. Milan’s most notable landmark is the historic Milan Depot, a former railroad station that played a central role in the town’s development during the late 19th century. The depot has been preserved and is now part of the town’s efforts to maintain its historical character. Another prominent landmark is the Milan City Park, which offers residents and visitors picnic areas, walking paths, and a baseball field, serving as a popular space for community events. Milan is also home to the Mercer County Historical Society Museum, which showcases local history, including exhibits on the region’s agricultural heritage and railroad history. The nearby Grand River provides opportunities for fishing, boating, and nature walks, further enhancing the area’s appeal to outdoor enthusiasts.
Gallatin
Area, Population, Zip Codes, Latitude, and Longitude
- Area: 1.11 sq mi
- Population: 1,750 (2020 Census)
- Zip Code: 64640
- Latitude: 40.0222° N
- Longitude: 93.9413° W
Location and History
Gallatin is located just south of the Iowa-Missouri border and is the largest town in Mercer County. Gallatin was founded in 1845 and named after Albert Gallatin, a prominent American politician and financier. The town’s location along the East Locust Creek made it an ideal site for early settlers, who were attracted by its access to water and fertile land for farming. Like many towns in northern Missouri, Gallatin’s economy was historically centered on agriculture, with corn, soybeans, and livestock serving as key industries. The town also became known as a center for trade and services, as it served the needs of surrounding farmers and ranchers. Gallatin’s importance grew during the 19th century, and the town benefited from its position along major transportation routes. The town became incorporated in 1850 and has since remained a key part of Mercer County’s agricultural economy. Although Gallatin is primarily residential and rural, it continues to host several key businesses and services that cater to its farming community. The town also has a rich cultural heritage, with many historical buildings and events reflecting its past.
Major Schools and Landmarks
Gallatin is part of the Gallatin R-V School District, which includes Gallatin High School, Gallatin Middle School, and several elementary schools. The district is recognized for its strong academic programs, as well as its active involvement in sports and extracurricular activities. Gallatin’s most significant landmark is the Daviess County Courthouse, located in the center of town. This historical building is a focal point of the community and a symbol of the town’s longstanding role as a regional center for government. Another key landmark is the Gallatin City Park, which includes recreational facilities like ball fields, a walking trail, and playgrounds, providing a place for residents to relax and engage in outdoor activities. Gallatin is also home to several historic churches and buildings, many of which reflect the town’s mid-19th-century heritage. The nearby Locust Creek Conservation Area offers additional outdoor activities, such as birdwatching, hiking, and wildlife viewing, making it a popular spot for nature lovers. Gallatin’s annual events, including the Gallatin Fall Festival, bring the community together and celebrate the town’s agricultural roots.
