Mercer County, Illinois

Mercer County

Mercer County was founded on January 13, 1825 from unorganized land. This county was named for Hugh Mercer (1726-1777), British officer in the Seven Years' War and general in the Continental Army during the American Revolutionary War.

The Mercer County Seat is located in Aledo (prior county seats was New Boston from 1835–1837, Millersburg from 1837–1847, Keithsburg from 1847–1857) also, the county government website is www.mercercountyil.org/ .

Areas bordering to Mercer County are  Rock Island County (north), Henry County (east), Knox County (southeast), Henderson County (south), Warren County (south), Des Moines County, Iowa (southwest), Louisa County, Iowa (west)

Cities, Towns & Villages located in Mercer County include  Aledo, Alexis, Boden, Burgess, Cable, Eliza, Gilchrist, Hamlet, Joy, Keithsburg, Mannon, Marston, Matherville, Millersburg, New Boston, New Windsor, North Henderson, Norwood, Petersville, Preemption, Reynolds, Seaton, Shale City, Sherrard, Sugar Grove, Swedona, Viola, Wanlock, Windsor.

Townships located in Mercer County include  Keithsburg, Eliza, Greene, Abington, Duncan, Preemption, Perryton, Ohio Grove, North Henderson, Mercer, Millersburg, New Boston, Rivoli, Richland Grove, Suez.

Mercer County vital records can be found at the Illinois Department of Public Health has copies of birth, marriage, divorce and death records. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Illinois for current fees and application process.

You can search online for Mercer County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Illinois Birth CertificateMarriage CertificateDivorce CertificateDeath Certificate Applications to mail.

Mercer County consists of Federal Census Schedules to guide in looking into your family tree. Federal Population Schedules can be found for 1830, 1840, 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

Mercer Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. Mercer Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. Mercer Co. Union Veterans Schedules is available for 1890. One can find free online and printable census forms to help you with your research.

Mercer County Societies and Family History Resources

A list of Mercer County Historical  and Genealogical Societies, Forums, Message Boards, Libraries, Archives.

Mercer County Courthouse and Government Records


Mercer County Courthouse

frequently fail to notice the significance of Mercer County court, probate, and land records data as a resource of family history and genealogy details. Buried away in Illinois courthouses and archives everywhere are the dreams and worries of the many Illinois people.

The chances are very good that your forefathers have left a detailed record of at least quite a few facets of their lives in the Mercer County court records. Even if your forefathers is not referred to in a Court case, take into account all of the other procedures which may have lead to her or him showing up in court records.

The below information and facts denotes whatever death, marriage, birth, land, wills, and legal records will be in Mercer County. The dates stated listed below tend to be the first noted documents for this particular county.

Remember to contact the clerk's office to determine hours, mailing address, fees and other specifics in advance of visiting or asking for information because of in some cases changing contact info. The Department Offices DO NOT DO RESEARCH. The records and documents are readily available to interested parties, barring private issues. Most staff will help people in finding the materials, but it's up to the person to perform the researching.
  • Mercer County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: Aledo, IL 61321
  • Mercer County Clerk & Recorder of Deeds maintains records and issues certificates of vital statistics (birth certificates, death certificates, and marriage certificates) for the entire County. The Recorder's duties are receiving, filing and maintaining all records related to real property in our county. These documents range from all types of conveyance deeds, mortgages, releases and assignments, property liens, as well as, assorted federal, state and local liens. The Recorder’s office is responsible for the recordation and storage of plats of subdivision, land surveys and monument records. Many other types of miscellaneous documents are recorded, such as; foreign birth certificates, foreign marriage licenses, and military discharge paperwork to name a few.
    • Phone: (309) 582-7021
    • Marriage Records: 1835
    • Birth & Death Records: 1877
    • Land Records: 1834
  • Mercer County Clerk of the Circuit Court, commonly known as the Circuit Clerk, is the keeper of the files and records of the Circuit Court. The Circuit Clerk's Office retains documents some of which include criminal law, chancery, support, probate, adoption, ect....
    • Phone: 309-582-7122
    • Probate Records: 1837
    • Court Records: 1836
  • Mercer County Treasurer's Office is responsible for the statutory duties required as County Treasurer and as Ex-Officio County Collector of Real Estate Property Taxes and Drainage District Taxes for the entire county.

Mercer County Links

The following are web links to Family history and genealogy, Records and Resources associated to Mercer County. These genealogy links fall into 3 categories: Commercial Sites, Private Sites or Organization Sites. Some have free access some require a cost. This is simply a collection that has been gathered or submitted. I do not recommend or promote one genealogy site over another. Feel free to provide your own preferred Mercer County genealogy or family history affiliated sites.

Mercer Co. IL Maps, Atlases & Gazetteers

Mercer Co. IL Books, Newspapers & Publications

Mercer Co. IL Birth, Marriage & Death Records

Mercer Co. IL Court, Probate Land and Tax Records

Mercer Co. IL Census Records

Mercer Co. IL Cemeteries & Graveyards

Mercer Co. IL Church & Bible Records

Mercer Co. IL Family Websites, Pictures & Histories

Mercer Co. IL General and History Websites

Mercer Co. IL Military Records

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