Created April 1, 1820 from territory attached to Darke and Shelby counties, organized 1824 — named for Gen. Hugh Mercer · county seat Celina. Repository addresses, online record links, and a free printable record checklist below.
Short episodes that walk through Mercer County's records, one record type at a time.
Formation · Settlers & Migration · Probate · Land · Tax · Churches · Newspapers · Where to Look
Watch on YouTube101 N. Main St., Suite 307, Celina, OH 45822 · (419) 586-8779
Wills, estates, guardianships, adoptions, and marriage licenses. Probate records begin 1824, land records 1823.
101 N. Main St., Room 203, Celina, OH 45822 · (419) 586-4232
mercercountyoh.gov/elected-officials/recorder
Deeds, mortgages, plats, and veteran discharge records; also maintains Century Farm records and Veterans Grave Registration data.
101 N. Main Street, Room 205, Celina, OH 45822 · (419) 586-6461
Divorces, civil suits (including partition suits that divide land among heirs), and Common Pleas journals. Before 1852, this court also handled wills and estates.
105 N. Main Street, Celina, OH 45822 · (419) 586-6402
Current tax lists and property transfer records. Early tax duplicates are on FamilySearch and at the Ohio History Connection.
303 N. Main St., Celina, OH 45822 · (419) 586-4442
mercerlibrary.org/info/genealogyroom
Non-circulating genealogy collection, court documents on microfilm, and links to digitized newspaper archives at the Coldwater, Fort Recovery, and St. Marys community libraries.
PO Box 437, Celina, OH 45822
mercerogs.net · meets 2nd Sunday monthly at the Richardson-Bretz Building
Founded 1979. Materials housed within the Mercer County District Library above.
130 E. Market St., Celina, OH 45822 · (419) 586-6065
therileyhousemuseum.org · Mon & Fri 9–5
A separate organization from the OGS chapter above, in the 1896 Riley House.
220 W. Livingston St., Suite B152, Celina, OH 45822 · (419) 586-3251 option 3
Records from 1908 forward. Earlier records, plus marriage/divorce records: Probate Court above.
Find A Grave — Mercer County and the Recorder's Office's Veterans Grave Registration records.
Not sure which office has what? See Which County Office Holds What.
Many Mercer County record books are filmed and free to view at FamilySearch (free account required).
In Full-Text Search, add Mercer County, Ohio as the place to find names inside handwritten deeds, wills, and court books. How to use it.
Mercer County was formed in 1820 from Darke County. For records made before then, search the parent county:
Most of Mercer County's land was federal Congress Lands, surveyed in townships and sections and first sold through U.S. land offices. The first buyer of each tract received a federal patent.
Titles that covered Mercer County, historic and current, with where to search each one. Not every historic title has been digitized — several survive only on microfilm.
| Title | Years | Where to Search |
|---|---|---|
| Mercer County Standard (Celina) | 1868-1939 | Chronicling America (loc.gov) |
| The Celina Democrat | 1895-1921 | Chronicling America (loc.gov) |
| Mercer County Observer (Celina) | 1874-1926 | Chronicling America (loc.gov) |
| Mercer County Chronicle (incl. Coldwater Chronicle) | 1907-2011 | Coldwater Public Library digital archive; 1936 on Chronicling America |
| Celina Advocate | 1905-1907 | Coldwater Public Library digital archive |
| The Celina Journal | 1871-1874 | Microfilm only — Mercer County District Library |
Fill in what you're looking for, print it, and take it with you to the courthouse or library.
Brick Walls & Buckeyes
brickwallsbuckeyes.com · Mercer County, Ohio
Addresses and links last checked October 2026.
County guides, record walkthroughs, and brick wall breakthroughs. Subscribe on YouTube and tap the bell so new episodes find you.
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