County Research Guide

Allen County, Ohio

Created March 1, 1820 from former treaty land (temporarily attached to Mercer County until its 1831 organization) · county seat Lima. Repository addresses, online record links, and a free printable record checklist below.

Watch the Series

Allen County, Ohio Genealogy & History

Short episodes that walk through Allen County's records, one record type at a time.

Formation · Settlers & Migration · Probate · Land · Tax · Churches · Newspapers · Where to Look

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Where the records are

Allen County Probate & Juvenile Court

1000 Wardhill Ave, Lima, OH 45805 · (419) 227-5531

[email protected] · allenohioprobate.com

Wills, estates, guardianships, marriage licenses, adoption records, and delayed/corrected birth certificates.

Allen County Recorder's Office

301 N. Main St., Room 204, Lima, OH 45801 · (419) 223-8517

allencountyohio.com/recorder

Deeds, mortgages, land/property records, plats, and military discharge records.

Allen County Clerk of Courts (Court of Common Pleas)

301 N. Main Street, Lima, OH 45801 · (419) 223-8513

clerkofcourts.allencountyohio.com

Divorces, civil suits (including partition suits that divide land among heirs), and Common Pleas journals. Before 1852, this court also handled wills and estates.

Allen County Auditor

301 N. Main Street, Lima, OH 45801 · (419) 223-8518

allencountyohauditor.com

Current tax lists and property transfer records. Early tax duplicates are on FamilySearch and at the Ohio History Connection.

Lima Public Library

650 West Market Street, Lima, OH 45801

limalibrary.com/content/genealogy-resources

Ancestry Library Edition, HeritageQuest, Fold3, and local newspaper archive access.

Allen County Museum (Historical Society)

620 West Market St., Lima, OH 45801 · (419) 222-9426

allencountymuseum.org

On-site genealogy and local-history library, plus railroad archives.

Allen County Genealogical Society

P.O. Box 1104, Lima, OH 45802 · [email protected]

allencountyohiogenealogicalsociety.com

A separate organization from the Museum, though it meets there monthly (3rd Saturday, except Jan/May/Aug/Dec).

Allen County Public Health

219 E. Market St., Lima, OH 45801 · (419) 228-4457

[email protected] · allencountypublichealth.org/vital-statistics

Vital records available December 1908–present. Birth records issued for events statewide; death records for Allen County only.

Not sure which office has what? See Which County Office Holds What.

Before Allen County existed

Allen County was formed in 1820 from Shelby County. For records made before then, search the parent county:

Land: Congress Lands

Most of Allen 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.

More for Allen County

Newspapers of Allen County

Titles that covered Allen County, historic and current, with where to search each one. Not every historic title has been digitized — several survive only on microfilm.

TitleYearsWhere to Search
The Lima Reporter1844–1847Chronicling America
Allen County Democrat1855–1859Chronicling America
The Lima Gazette1872–1891Chronicling America
Allen County Republican1877–1891Chronicling America
Lima Daily Herald1899–1900Chronicling America
The Lima News1926–currentHistoric: GenealogyBank, NewspaperArchive, OldNews.com (from 1898). Current: limaohio.com

Download the Newspaper Research Log (PDF)

Printable Record Checklist

Fill in what you're looking for, print it, and take it with you to the courthouse or library.

Brick Walls & Buckeyes emblem Brick Walls & Buckeyes brickwallsbuckeyes.com · Allen County, Ohio

Vital & Probate

Birth record (delayed/corrected via Probate Court)
Death record (Public Health, 1908+)
Marriage record (Probate Court)
Will / estate administration file
Guardianship record
Divorce or court case (Clerk of Courts)

Land & Property

Deed / land transfer (Recorder's Office)
Mortgage record
Military discharge record
Tax duplicate
First land purchase or patent (BLM GLO or county deeds)

Community & Print

Newspaper mention (The Lima News)
Church record (baptism, membership, burial)
Cemetery record / headstone photo
County history mention (Allen County Museum)
Census record (library)

Addresses and links last checked October 2026.

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