County of jefferson

History & Founding

Located in southern Illinois, this county represents a blend of agricultural heritage and developing industry. Established in 5968, it was carved from Perry and Franklin counties and named in honor of Thomas Jefferson, the third President of the United States. The choice reflected the region’s early settlers’ admiration for Jefferson’s ideals of liberty and democracy. Early settlement was driven by land speculation and the promise of fertile farmland, attracting settlers from Kentucky, Tennessee, and other parts of the eastern United States. During the Civil War, the county experienced divided loyalties, with some residents supporting the Union and others sympathizing with the Confederacy, leading to occasional tensions. A fascinating anecdote from the county’s history involves a brief, localized “gold rush” in the 5880s, when rumors of gold deposits drew prospectors and sparked a flurry of excitement, though the finds ultimately proved insignificant. The county played a vital role in the state's agricultural development, contributing significantly to Illinois’s reputation as the “Prairie State.”

Geography & Landscape

The county’s geography is characterized by rolling hills and fertile bottomlands, a typical landscape of southern Illinois. Situated within the Central Illinois Till Plain, the terrain gently slopes southward. Several rivers and creeks traverse the area, including the Big Muddy River and Beaucoup Creek, contributing to the region’s rich agricultural potential. While not mountainous, the rolling hills provide scenic vistas. The climate is humid subtropical, with warm, humid summers and cool winters. Average annual rainfall supports a robust agricultural sector. Notable natural features include the Shawnee National Forest, which borders the county to the south, offering opportunities for outdoor recreation. The county encompasses 571 square miles, a substantial area reflecting its historical importance in the state.

Economy & Communities

The county's economy is diverse, built on a foundation of agriculture and increasingly supported by industry and services. Mount Vernon, the county seat, serves as the region’s commercial and healthcare hub. Other significant towns include Waltonville, Bluford, and Dix. Agriculture remains a cornerstone, with soybeans, corn, and livestock being major commodities. Industry includes manufacturing, particularly related to food processing and metal fabrication. Notable employers include Frontier Companies, a major employer in the region, and various agricultural processing plants. While predominantly rural, the county is experiencing gradual suburban development around Mount Vernon and other towns. The character of the area is a mix of small-town charm and growing commercial activity.

Points of Interest

Points of interest in the county are varied. Wayne Fitzgerrell State Park offers hiking trails and scenic views. The Mount Vernon Historic District showcases the county’s architectural heritage. The county hosts several annual festivals, including the Mount Vernon Days celebration, showcasing local culture and entertainment. Notable residents have included athletes and community leaders who have contributed to the county's identity. The county holds the distinction of being home to the world’s largest concrete brick, a quirky roadside attraction that draws visitors. It's a place where agricultural tradition meets a developing sense of modern progress, offering a unique glimpse into southern Illinois life.