MERCER COUNTY
POPULATION: 15,699 (2023 estimate)
Mercer County has experienced a slight decline in population over the past decades, reflecting broader trends in rural Illinois counties.
Key Cities and Villages
Aledo (Population: 3,618)
- County Seat: Known as the hub of Mercer County, Aledo flourished with the arrival of the railroad in the 1850s.
- Cultural Significance: Hometown of country music stars Suzy Bogguss and Margo Price.
- Historical Tidbit: Former site of William & Vashti College (1908–1917).
- Events: Hosts Antique Days (September) and the famous Rhubarb Fest (June).
- Notable Landmark: The Aledo Opera House, a cultural gem that preserves the town’s rich artistic history.
New Boston (Population: 672)
- Location: Situated along the Mississippi River, offering stunning riverfront views.
- Nature: Adjacent to the Port Louisa National Wildlife Refuge, a haven for migratory birds.
- Historical Significance: Was a major steamboat stop in the 19th century, connecting the region to trade routes.
Keithsburg (Population: 598)
- Historical Challenges: Once a thriving town, it has faced multiple devastating floods, including the infamous 1993 and 2008 floods.
- Recreation: Renowned for its excellent fishing spots and outdoor activities.
Sherrard (Population: 625)
- Early Prosperity: The town experienced rapid growth with the Coal Valley Mining Company but declined after the mines closed in 1918.
- Noteworthy Fact: Among the first Illinois towns to adopt electricity and telephones.
Other Key Communities
- Viola (Population: 940): Quaint small-town charm with local parks and historical significance.
- Matherville (Population: 750): Known for its proximity to Rock Island and origins tied to the railroad.
- Joy (Population: 420): Home to Mercer Junior High School and a tight-knit community spirit.
- Seaton, Windsor, Reynolds, North Henderson: Each offers its unique slice of rural life, with stories of historical baseball players and innovative local businesses.
Key Landmarks
- Lock and Dam #17 (near New Boston): Vital for the Mississippi River’s navigation system and a picturesque spot for visitors.
- Port Louisa National Wildlife Refuge: A sprawling refuge supporting migratory bird populations and offering hiking trails.
- Mercer County Courthouse: An iconic structure in Aledo, embodying 19th-century architectural charm.
- Fenton Park (Aledo): A central community space for recreation and local events.
Notable Figures
- Hugh Mercer: The county’s namesake, a Revolutionary War doctor and hero.
- Suzy Bogguss and Margo Price: Acclaimed country musicians who got their start in Aledo.
- Karl Swanson (North Henderson): Former Major League Baseball player, notable for living through the entire 20th century (1900–2002).
Fun Facts
- Mercer County land was initially allocated to veterans of the War of 1812.
- Alexis is uniquely named after Russian nobility, reflecting a moment in U.S. diplomatic history.
- Mercer County’s rural charm and festivals attract visitors year-round, particularly for events like the Rhubarb Fest.
The Forgottonia Project 