Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site on September 23, 2026.
Mercer County, Ohio, has about 43,000 residents (2024 Census Bureau estimate). The title to a parcel in Mercer County is in the deed records of the County Recorder and its taxable value is set by the County Auditor; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, evictions and court cases, records requests and common questions.
Related guides: Mercer County public records, Mercer County arrest records, Mercer County warrants, Mercer County inmate search, Mercer County criminal records, Ohio arrest records and Ohio inmate search.
Deeds, Mortgages and Liens in Mercer County
Deeds, mortgages, liens and easements that affect title to land in Mercer County are recorded by the County Recorder, which indexes them by name and sells copies.
SearchSystems opened and checked the County Recorder's page at recorder.mercercountyoh.gov/LandmarkWeb (page title: Landmark Web Official Records Search), which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Mercer County
What a parcel in Mercer County is taxed on is the business of the County Auditor, which also keeps the parcel maps. Ohio counties reappraise every six years with an update at the three-year mark, and tax 35 percent of the appraised value.
SearchSystems opened and checked the County Auditor's page at mercercountyoh.gov/elected-officials/treasurer/search-property-records (page title: Search Property Records | Official Mercer County, Ohio Government Website), phone (419) 586-2259, 101 North Main Street, Room 201 Celina, OH 45822, Monday: 8:30 a.m. to 5:00 p.m., which answered when SearchSystems opened it on September 23, 2026.
Evictions and Court Cases About Land in Mercer County
An eviction is a court case in the Municipal and County Courts, and so is a foreclosure, a lien dispute or a quiet title suit, in the Mercer County Court of Common Pleas; the court file is public unless sealed.
The court records page SearchSystems verified for the county is at mercercountyoh.gov/elected-officials/clerk-of-courts, phone (419) 586-6461.
Asking a County Office for a Record
Under the Ohio Public Records Act a county office must answer a request promptly, within a reasonable period of time, and it may charge the actual cost of copying. The county records request page SearchSystems verified is at mercercountysheriffohio.gov/public-records-request (page title: Public Records Request).
Frequently Asked Questions
Who records deeds in Mercer County?
The County Recorder, at recorder.mercercountyoh.gov/LandmarkWeb. Deeds, mortgages and liens on land in Mercer County are filed there, and the County Auditor (mercercountyoh.gov) has the assessment records.
Who sets the assessed value of a property in Mercer County?
The County Auditor, whose page SearchSystems verified is at mercercountyoh.gov.
Where are evictions from Mercer County filed?
In the Municipal and County Courts. The file is public unless the court seals it.
How is property assessed in Ohio?
Ohio counties reappraise every six years with an update at the three-year mark, and tax 35 percent of the appraised value.
Is this the official Mercer County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.