Union County Ohio Record Collections online has many online genealogy collections including:
Auditor
Board of Elections
Clerk of Courts
Commissioners
Probate Court
Recorder
Sheriff
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- Atlases and County Plat Maps, 1849-1928
- County Highway Maps, 1916-2017
- Ditch Maps, 1870-1993
- Election Ward & Precinct Maps, 1953-2011
- Flood Insurance Rate Maps,1991-1991
- Plat (Tax) Maps, 1846-1994
- Railroad Valuation Maps,1918-1932
- Road Maps,1849-1940
- Sanborn Fire Insurance Maps,1885-1946
- School District Maps,1904-1909
- Veterans Grave Maps,1775-1939
- Village Subdivision Maps,1816-2020
- Virginia Military Survey (VMS) Maps,1797-1848
- Watershed Maps, 1879-1955
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Union County Record Collections
- Auditor
- Board of County Commissioners
- Board of Education
- Board of Elections
- Board of Fund Commissioners
- Board of Railroad Appraisers and Assessors
- Board of Revision
- Board of School Examiners
- Budget Commission
- Children’s Services Board (Children’s Home)
- Clerk of Courts
- Coroner
- County Court
- County Home (Infirmary)
- Dog Warden
- Engineer
- Jury Commission
- Probate Court
- Probate Court Records – includes birth records, marriage records, probate records
- Recorder
- Sheriff
- Sinking Fund Trustees
- Treasurer
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