Cities, Towns, and Villages in Mercer County, Illinois

Here is a list of all the cities, towns, and villages in Mercer  County, Illinois

Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo.

Here is a list of all the cities, towns, and villages in Mercer County, Illinois:


  1. Aledo
  2. Keithsburg
  3. New Boston


Mercer County is divided into fifteen townships:

  1. Abington
  2. Duncan
  3. Eliza
  4. Greene
  5. Keithsburg
  6. Mercer
  7. Millersburg
  8. New Boston
  9. North Henderson
  10. Ohio Grove
  11. Perryton
  12. Preemption
  13. Richland Grove
  14. Rivoli
  15. Suez


  1. Alexis
  2. Joy
  3. Matherville
  4. North Henderson
  5. Reynolds
  6. Seaton
  7. Sherrard
  8. Viola
  9. Windsor

Unincorporated communities

  1. Boden
  2. Burgess
  3. Cable
  4. Eliza
  5. Gilchrist
  6. Hamlet
  7. Mannon
  8. Marston
  9. Millersburg
  10. Petersville
  11. Preemption
  12. Shale City
  13. Sunbeam
  14. Swedona
  15. Wanlock

Quick Facts about Mercer county, Illinois

Here are some quick facts about Mercer county, Illinois:

  • Official Website:
  • County Seat: Aledo
  • Founded: 1825
  • Area: Approximately 569 square miles
  • Population: Around 15,000
  • Geography: Located in northwestern Illinois.
  • Economy: Historically tied to agriculture, with contributions from industry and commerce.
  • Notable City: Aledo is the largest city and serves as the county seat.
  • Education: Home to local school districts.
  • Recreation: Offers parks, outdoor activities, and proximity to the Mississippi River.
  • Notable Landmarks: Mercer County Courthouse, Old Market House State Historic Site, and local historical sites contribute to the county’s character.

What is Mercer County famous for?

  • The county holds some of the state’s greatest cultural and historic sites with Revolutionary War battle sites in Trenton and Princeton. Recreation and entertainment are abundant with first-class parks, four public golf courses, and the New York Yankees AA-affiliate Trenton Thunder at Arm & Hammer Park.

Is Mercer County a good place to live?

  • Mercer County is located in New Jersey with a population of 384,951. Mercer County is one of the best places to live in New Jersey. In Mercer County, most residents own their homes. In Mercer County there are a lot of bars, restaurants, coffee shops, and parks.

Why is it called Mercer County?

  • Residents named the county in honor of General Hugh Mercer, a hero of the American Revolution. In 1791, Indians defeated General Arthur St. Clair’s army along the Wabash River.

What is the symbol of Mercer County?