SearchSystems Editorial

Reviewed and updated October 11, 2026 by the SearchSystems.net editorial team. Every office link on this page was opened and checked against the office's own website at review time.

About this guide

Mercer County is a county in Illinois with about 15,000 residents (2024 Census Bureau estimate). Its public records are not in one place: court cases, jail bookings, deeds, property values, vital records and records requests each belong to a different office. This guide names the office that holds each kind of record, links to its own website and gives the phone number and address where the office publishes them. SearchSystems verified 8 county office pages for Mercer County, every one opened and checked.

In this guide: Where the records live, Jail and arrests, Court records, County Clerk, Deeds and property, Vital records, State's Attorney, Records requests, Statewide sources, More directory links, Cities and towns, Other counties and Questions.

Where Mercer County public records live

Each kind of Mercer County record is kept by a different office. The list below names the office SearchSystems verified for each one; the sections that follow give its phone, address and hours where the office publishes them.

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Arrests, jail and inmate lookups in Mercer County

A person arrested in Mercer County is booked into the jail, and the booking record (name, charges, bond and the next court date) is public in most cases. The office below is the one SearchSystems verified for jail and inmate information in Mercer County.

  • Website: mercercosheriff.org (page title: Mercer County Sheriff, IL)
  • Phone: (309) 582-5194
  • Address: 906 SW 3rd St. Aledo, IL 61231
  • Checked: September 23, 2026, the page answered.

Jail rosters usually show the people in custody now. Once a person is released, the case continues in the court records below.

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Court records and case lookups in Mercer County

Civil, criminal, family, probate and traffic cases filed in Mercer County are kept by the clerk of the court that heard them. Many courts offer an online case search; the page below is the one SearchSystems verified for Mercer County.

  • Website: illinoiscourts.gov/courts-directory/104/Mercer-County-Courthouse/court (page title: Mercer County Court | State of Illinois Office of the Illinois Courts)
  • Phone: (309) 582-7122
  • Address: 61231 Trial Court Administrator Vicki Bluedorn Mailing Address P.O. Box 175 Aledo, IL 61231
  • Hours: Monday - Friday 8:00 a.m. - 4:00 p.m.
  • Checked: September 23, 2026, the page answered.

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County Clerk of Mercer County

The county clerk is the county's record keeper. What the office holds differs by state: in some states it files marriage licenses and vital records, in others deeds, court papers or the meeting records of the governing board. Its own website below says what it holds in Mercer County.

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Deeds, land records and property values in Mercer County

Two offices share property records. The recording office files deeds, mortgages, liens and the other documents that affect title to land in Mercer County. The assessment office sets the taxable value of each parcel and usually offers a free parcel search by address or owner name.

Recorded documents: County Recorder

Property values: Supervisor of Assessments

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Birth, death and marriage records in Mercer County

Certified copies of birth and death certificates for events in Mercer County are issued by the office below. The Illinois state vital records office also issues certified copies for any event in the state.

  • Website: aledoil.gov/313/Vital-Records (page title: Vital Records | Aledo, IL)
  • Address: 120 N College Ave., Aledo, IL 61231
  • Checked: September 23, 2026, the page answered.

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State's Attorney for Mercer County

The State's Attorney is the office that prosecutes criminal cases in Mercer County. The case files themselves are court records (above); the prosecutor's office handles victim services and questions about pending prosecutions.

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Public records requests to Mercer County

Every state has a public records law that applies to county offices. A record that is not posted online is requested from the office that holds it. Many counties run one request page for every department; it is listed below when SearchSystems verified one for Mercer County.

  • Website: mercercosheriff.org/foia/index.php (page title: Mercer County Sheriff, IL)
  • Phone: (309) 582-5158
  • Address: 906 SW 3rd St Aledo, IL 61231
  • Checked: September 23, 2026, the page answered.

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Statewide Illinois sources

Some records are kept by the state rather than the county. These are the Illinois state offices SearchSystems verified; each link opens the state office's own page.

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These links come from the SearchSystems directory for Mercer County and were opened again on October 2, 2026. Each one still answers.

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Cities and towns in Mercer County

Mercer County has 9 incorporated cities and towns (2024 Census Bureau count, population in parentheses). City records such as council minutes, permits, business licenses and police reports are kept by each city; the records on this page are county records whatever the city.

  • Aledo (3,522)
  • Viola (843)
  • Matherville (690)
  • Sherrard (688)
  • New Boston (605)
  • Keithsburg (545)
  • Joy (359)
  • Seaton (206)
  • North Henderson (159)

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Mercer County Arrest Records

The Mercer County arrest records guide names the four agencies that report arrests to the FBI here and the 34 arrests the one agency with every month of 2024 on file reported that year. It also says where a person arrested here is held, how to find out about an arrest and how to get a copy of the report.

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Mercer County Records Guides

SearchSystems has eight more guides to Mercer County, each written from the county's own offices and figures: Mercer County warrants (who issues and serves them, where a person arrested on one is held, how to check for one), Mercer County inmate search (the jail page of the Mercer County Sheriff's Office, the jail numbers and who books people), Mercer County criminal records (the court file, the Illinois criminal history and the local arrest records), Mercer County court records (which court hears what, the case search and who keeps the files), Mercer County police reports (which agency holds a report and what the Illinois Freedom of Information Act requires), Mercer County traffic tickets (which court takes the ticket, who writes them and the driving record), Mercer County DUI (the DUI law, the arrest, the court case and the license case) and Mercer County property records (deeds, assessed values, permits and evictions).

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Frequently Asked Questions

Is this the official Mercer County website?

No. SearchSystems.net is an independent public records directory, online since 1997. It links to the official offices listed above; SearchSystems does not hold records, charge for them or take requests.

How do I find out if someone is in jail in Mercer County?

Use the jail or inmate page SearchSystems verified for Mercer County at mercercosheriff.org, or call (309) 582-5194. Rosters usually show the people in custody now; after release, the case continues in the court records.

Where do I look up a court case in Mercer County?

The court records page SearchSystems verified for Mercer County is at illinoiscourts.gov, phone (309) 582-7122. A case number finds a case fastest; a name search returns every case with that name.

Who records deeds in Mercer County?

The County Recorder, at mercercountyil.org. Deeds, mortgages and liens on land in Mercer County are filed there.

How do I get a birth or death certificate for Mercer County?

From the office SearchSystems verified for Mercer County vital records at aledoil.gov/313/Vital-Records, or from the Illinois state vital records office.

How do I request a public record from Mercer County?

Through the records request page at mercercosheriff.org/foia/index.php. A record that is not covered there is requested from the office that holds it.