page_title: Mercer County, Illinois
hierarchical_section_title: Mercer County, Illinois
caption_attribution_description: English: Mercer County Courthouse This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 82002589
context_page_description: Mercer County is a county in Illinois. According to the 2010 census, it had a population of 16,434. Its county seat is Aledo.
  Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
context_section_description: Mercer County is a county in Illinois. According to the 2010 census, it had a population of 16,434. Its county seat is Aledo.
  Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
caption: Mercer County Courthouse
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