Cities and Towns in Saint Charles County, Missouri

Founded in 1812, Saint Charles County is one of 114 counties in the state of Missouri. Historically, Saint Charles County was one of the five original counties. The city of Saint Charles is the county seat. With FIPS code of 183, Saint Charles County has a population of 409,981 and area of 561 square miles (1,453 km²).

List of all cities in Saint Charles County, MO alphabetically

City/Town	Postal Code	Area Code
Augusta, MO	63332	636
Black Walnut, MO	63301	636
Cottleville, MO	63304	636
	63338	636
	63366	636
	63376	636
Dardenne, MO	63366	636
	63368	636
Dardenne Prairie, MO	63366	636
	63368	636
Defiance, MO	63341	636
Femme Osage, MO	63332	636
Flinthill, MO	63346	636
Foristell, MO	63348	636
Gilmore, MO	63385	636
Harvester, MO	63303	636
Josephville, MO	63385	636
Kampville, MO	63301	636
Kampville Beach, MO	63301	636
Kampville Court, MO	63301	636
Lake Saint Louis, MO	63367	636
Machens, MO	63373	636
Matson, MO	63341	636
New Melle, MO	63365	636
O Fallon, MO	63366	636
	63367	636
	63368	636
Orchard Farm, MO	63301	636
Portage des Sioux, MO	63373	636
Saint Charles, MO	63301	636
	63302	636
	63303	636
	63304	636
	63366	636
Saint Paul, MO	63366	636
Saint Peters, MO	63303	636
	63304	636
	63366	636
	63368	636
	63376	636
Schluersburg, MO	63332	636
South Shore, MO	63301	636
Weldon Spring, MO	63304	636
Weldon Spring Heights, MO	63304	636
Wentzville, MO	63385	636
West Alton, MO	63386	636

Major Cities and Towns in Saint Charles County, Missouri

St. Charles

Area, Population, Zip Codes, Latitude, and Longitude

• Area: 15.57 sq mi
• Population: 70,000+ (2020 Census)
• Zip Codes: 63301, 63303
• Latitude: 38.7880° N
• Longitude: 90.4970° W

Location and History

St. Charles is one of the oldest cities in Missouri and serves as the county seat of St. Charles County. It is located on the banks of the Missouri River, just west of St. Louis. Originally founded as a French trading post in 1769, the city became a key point in early American westward expansion. St. Charles was Missouri’s first capital from 1821 to 1826 before the capital was moved to Jefferson City. The city was a prominent stop on the Lewis and Clark Expedition and was a hub for the fur trade. During the 19th century, it played an important role in agriculture, particularly grain and livestock production, and served as a riverport for shipping goods. The city’s historic district, which includes buildings from the 18th and 19th centuries, reflects its French and early American heritage. Over time, St. Charles expanded with the growth of the railroad and the rise of industrialization. Today, the city is a thriving suburb of St. Louis with a mix of residential, commercial, and historical areas, making it one of Missouri’s most desirable places to live and visit.

Major Schools and Landmarks

St. Charles is served by the St. Charles R-VI School District, which includes several elementary, middle, and high schools. The district is known for its strong academic programs, including specialized programs in technology and arts. Additionally, Lindenwood University, a private liberal arts college, is located in the city, contributing to its educational landscape. Major landmarks in St. Charles include the St. Charles Historic District, which features cobblestone streets, charming 19th-century buildings, and shops. The city’s historic downtown area includes the Missouri Riverfront, with riverboats offering cruises and historical tours. Other landmarks include the Lewis and Clark Boat House and Nature Center, dedicated to the famous explorers’ journey, and the St. Charles County Heritage Museum, which preserves the history of the area. The city is also known for its proximity to the Katy Trail State Park, which offers outdoor activities like biking and hiking along the Missouri River. St. Charles also hosts several annual events, including the Festival of the Little Hills, which celebrates the city’s French heritage, making it a cultural hub in the region.

O’Fallon

Area, Population, Zip Codes, Latitude, and Longitude

• Area: 30.02 sq mi
• Population: 90,000+ (2020 Census)
• Zip Codes: 63366, 63368
• Latitude: 38.7891° N
• Longitude: 90.7013° W

Location and History

O’Fallon is a rapidly growing city located in the northwestern part of St. Charles County. It was founded in 1856 and named after John O’Fallon, a prominent businessman and philanthropist from St. Louis. Initially a small agricultural community, O’Fallon saw significant growth in the latter half of the 20th century as suburban development expanded outward from St. Louis. The city’s location along Interstate 70 and its proximity to St. Louis contributed to its population growth, as families and businesses sought the suburban lifestyle with easy access to the larger metropolitan area. Today, O’Fallon is one of Missouri’s fastest-growing cities, known for its family-friendly atmosphere, extensive parks and recreation programs, and thriving business community. The city also has a rich history, with several buildings and landmarks reflecting its early 20th-century heritage. O’Fallon continues to expand, with new developments in residential housing, retail centers, and entertainment options.

Major Schools and Landmarks

O’Fallon is served by the Fort Zumwalt School District, one of the largest school districts in Missouri, offering a variety of educational opportunities at the elementary, middle, and high school levels. The city also has several private schools, as well as options for higher education, including nearby Lindenwood University and St. Charles Community College. O’Fallon is known for its wide range of recreational facilities, including O’Fallon Sports Park and the O’Fallon Community Park, which features sports fields, playgrounds, and walking trails. The city is also home to the O’Fallon Historical Society and Museum, which showcases the city’s development from a small agricultural town to a modern suburban city. Notable landmarks include the O’Fallon City Hall, the Old Town District, and the Alligator’s Creek Aquatic Center, which attracts residents during the summer months. Additionally, O’Fallon hosts a number of community events throughout the year, such as the O’Fallon Heritage & Freedom Fest, a Fourth of July celebration known for its fireworks and parade.

Wentzville

Area, Population, Zip Codes, Latitude, and Longitude

• Area: 10.51 sq mi
• Population: 41,000+ (2020 Census)
• Zip Codes: 63385
• Latitude: 38.8106° N
• Longitude: 90.8505° W

Location and History

Wentzville is located in the western part of St. Charles County, near Interstate 70. Originally settled in the early 19th century, the town was first known as “Wentz’s Mill” after the Wentz family, who operated a local gristmill. Wentzville was officially established in 1855, and it was initially a small farming community. The construction of the railroad in the mid-19th century spurred growth in the town, with new residents arriving to work in various industries, including agriculture, milling, and eventually manufacturing. In the 20th century, Wentzville experienced substantial growth due to its proximity to St. Louis and its location along Interstate 70. The city’s population surged in the late 20th and early 21st centuries as suburban sprawl reached the area. Today, Wentzville is a thriving suburban city with a mix of residential, commercial, and industrial developments, including the General Motors assembly plant, which plays a key role in the city’s economy.

Major Schools and Landmarks

Wentzville is served by the Wentzville School District, one of the fastest-growing districts in Missouri, offering a wide range of educational opportunities. The district includes several elementary schools, two middle schools, and two high schools, as well as various special education and vocational programs. Wentzville is also home to St. Patrick School, a private Catholic institution. The city offers a number of parks and recreational opportunities, including the Wentzville City Park, which features a lake, trails, and picnic areas. Other landmarks include the Wentzville Historical Society Museum, which preserves the town’s history and the role it played in the region’s development. The city is also known for its popular events, such as the Wentzville Days Festival, which celebrates the city’s heritage with music, food, and family-friendly activities. Additionally, the city is home to the Progress West HealthCare Center, which provides medical services to residents. Wentzville’s location along Interstate 70 and near St. Louis has made it an attractive destination for businesses, with a number of corporate offices, retail shops, and restaurants contributing to its economic vitality.

Dardenne Prairie

Area, Population, Zip Codes, Latitude, and Longitude

• Area: 5.45 sq mi
• Population: 12,000+ (2020 Census)
• Zip Codes: 63368
• Latitude: 38.7412° N
• Longitude: 90.7440° W

Location and History

Dardenne Prairie is a suburban community located in the northern part of St. Charles County, just east of the city of O’Fallon. The town was founded in the early 19th century, and its name derives from the Dardenne Creek, which runs through the area. Originally a farming settlement, Dardenne Prairie developed slowly over the years, with agriculture being the primary activity. The area remained sparsely populated until the 1980s when suburban sprawl from St. Louis began to reach Dardenne Prairie. As a result, the town has experienced rapid growth in recent decades, transitioning from a rural community to a suburban enclave. Today, Dardenne Prairie is known for its residential neighborhoods, parks, and small-town charm, with a focus on preserving its natural environment. The city is now part of the larger St. Louis metropolitan area, making it an attractive location for families seeking suburban living with easy access to urban amenities.

Major Schools and Landmarks

Dardenne Prairie is served by the Wentzville School District, which provides residents with access to top-tier public education. The district’s schools, including Dardenne Elementary School and Wentzville Middle School, are known for their strong academic performance and commitment to preparing students for higher education and careers. Dardenne Prairie is home to several parks, including the Dardenne Prairie Park, which features walking trails, sports fields, and picnic areas. The town also boasts several nearby recreational areas, including the scenic Dardenne Creek, which offers opportunities for fishing, kayaking, and nature walks. While the town itself does not have many historical landmarks, it is in close proximity to the historical and cultural attractions of nearby O’Fallon and St. Charles, including the Lewis and Clark Boat House and the Katy Trail. Dardenne Prairie is also known for its family-friendly atmosphere, with numerous community events and a strong sense of civic pride.

Harvester

Area, Population, Zip Codes, Latitude, and Longitude

• Area: 4.26 sq mi
• Population: 3,000+ (2020 Census)
• Zip Codes: 63304
• Latitude: 38.7561° N
• Longitude: 90.6469° W

Location and History

Harvester is an unincorporated community located in the southeastern part of St. Charles County. It was originally settled in the mid-19th century as a rural farming community. Harvester’s name is derived from its early agricultural roots, as the area was known for wheat harvesting and grain production. The community remained largely agricultural until the 1960s and 1970s, when suburban growth from St. Louis spread into the area. Harvester became more residential as new housing developments were built, and it is now a small, quiet suburb of St. Louis. The town has maintained a balance between suburban development and its rural heritage, with several local parks and preserved green spaces offering residents a sense of tranquility amidst the growth of the surrounding areas.

Major Schools and Landmarks

Harvester is served by the Francis Howell School District, which includes several schools, such as Francis Howell High School. The district is known for its excellence in both academics and athletics, with a strong emphasis on preparing students for college and careers. Notable landmarks in Harvester include the nearby Veterans Tribute Park in Weldon Spring, which honors veterans and offers walking trails, a pond, and educational exhibits. The city is also home to local parks and nature preserves, including the popular Babler State Park, which provides hiking, biking, and wildlife-watching opportunities. Harvester’s location near the city of St. Charles also provides residents with access to additional cultural and historical landmarks, such as the St. Charles Historic District and the Missouri Riverfront. Harvester, like many parts of St. Charles County, enjoys a quiet suburban atmosphere with a strong sense of community.