Adams County – No Chapter
OHGenWeb Site: https://adams.ohgenweb.org/
Allen County Chapter, OGS
Website
Email
Ashland County Chapter, OGS
Website
Email
OHGenWeb Site: https://ashland.ohgenweb.org/
Ashtabula County Chapter, OGS
Website
Email
Athens County Chapter, OGS
Website
Email
Auglaize County Chapter, OGS
Facebook: Auglaize County Chapter of the Ohio Genealogical Society
Email
OHGenWeb Site: http://auglaize.ohgenweb.org/
Belmont County Chapter, OGS
Website: https://bccogs.org/
Email: [email protected]
Brown County Chapter, OGS
Facebook: Brown County Genealogical Society
Email
Butler County Chapter, OGS – No Chapter
Carroll County Chapter, OGS
Website
Email
Champaign County Chapter, OGS – No Chapter
Clark County Chapter, OGS
Website: https://www.rootsweb.com/~ohcccogs/
Email: [email protected]
Clermont County Chapter, OGS
Website: https://ccgsoh.org
Email: [email protected]
Clinton County Chapter, OGS
Website
Email
Columbiana County Chapter, OGS – No Chapter
Coshocton County Chapter, OGS
Website: https://coshoctongenealogy.wordpress.com/
Email: [email protected]
Crawford County Chapter, OGS
Website: https://crawfordcountyohiogenealogy.org/
Email: [email protected]
Cuyahoga Valley Chapter, OGS
Website: https://www.cuyahogagenealogy.org/
Email: [email protected]
Cuyahoga West Chapter, OGS – No Chapter
Darke County Chapter, OGS
Website: https://www.dcogen.org/
Email: [email protected]
Defiance County Chapter, OGS
Website: https://www.defiancecountygenealogy.org/
Email: [email protected]
Delaware County Chapter, OGS
Website: http//www.delawareohiogenealogy.org
Email: [email protected]
East Cuyahoga Chapter, OGS
Website
Email
Erie County Chapter, OGS – No Chapter
See Huron County Chapter OGS (DBA) Firelands Genealogical Society
Fairfield County Chapter, OGS
Website: https://www.fairfieldgenealogy.org/
Email: [email protected]
Fayette County Chapter, OGS
Website: https://sites.google.com/site/fayettecoohgensociety/
Email: [email protected]
Florida Chapter, OGS
Public Facebook Group: https://www.facebook.com/groups/474718687208607
Private Facebook Group: https://www.facebook.com/groups/FLOGS
Email: [email protected]
Franklin County Chapter, OGS
Website: https://www.fcghs-oh.org/
Email: [email protected]
Fulton County Chapter, OGS
Website: https://www.fultoncoogs.org/
Email: [email protected]
Gallia County Chapter, OGS
Website: https://galliagenealogy.com/ (Under construction May 2026)
Email
Geauga County Chapter, OGS
Website: https://www.gcgsoh.org/
Email: [email protected]
Greater Cleveland Chapter, OGS
Website: https://gcgs.yolasite.com/
Email: [email protected]
Greene County Chapter, OGS
Website: https://www.greenecountyogs.com/
Email: [email protected]
Guernsey County Chapter, OGS
Website: www.guernseycountyohiogenealogy.com/
Email: [email protected]
Hamilton County Chapter, OGS
Website: https://www.hcgsohio.org/
Email: [email protected]
Hancock County Chapter, OGS
Website: https://www.facebook.com/hccogs
Email: [email protected]
Hardin County Chapter, OGS
Website: https://www.hardincountyconnections.com
Email: [email protected]
Harrison County Chapter, OGS
Website: https://sites.rootsweb.com/~ohharris/hcgs.htm
Email: [email protected]
Henry County Chapter, OGS
Website: https://www.henrycountyohiogenealogy.org/index.html
Email: none – Contact form on website
Highland County
See Southern Ohio Chapter, OGS
Hocking County Chapter, OGS
Website: https://hockingcountyhistorymuseum.org/
Email: [email protected]
Holmes County Chapter, OGS
Website: https://usgenwebsites.org/OHHolmes/hcgs_index.html
Email: [email protected]
Hudson Genealogical Study Group
Website
Email
Huron County Chapter OGS (DBA) Firelands Genealogical Society
Website: https://www.hcc-ogs.org
Email: [email protected]
Jackson County Chapter, OGS
Website: https://www.jacksoncountyohiogen.com/
Email: [email protected]
Jefferson County Chapter, OGS
Website
Email
Knox County Chapter, OGS
Website: Website
Email: Email
Lake County Chapter, OGS
Website
Email
Lawrence County Chapter, OGS
Website
Email
Licking County Chapter, OGS
Website: https://lickingcountyohiogenealogysociety.org/
Email: [email protected]
Logan County Chapter, OGS
Website: https://www.loganhistory.org/genealogical-society
Email: [email protected]
Lorain County Chapter, OGS
Website: https://loraincoogs.org/
Email: [email protected]
Lucas County Chapter, OGS
Website: https://www.lucasogs.org
Email: [email protected]
Madison County Chapter, OGS
Website
Email
Mahoning County Chapter, OGS
Website: https://www.facebook.com/MahoningCCOGS/
Email: [email protected]
Marion Area Chapter, OGS
Website: https://www.marionohmags.weebly.com
Email: [email protected]
Medina County Chapter, OGS
Website: https://medinacoogs.org/
Email: [email protected]
Meigs County Chapter, OGS
34465 Crew Road, Pomeroy, OH 45769
Email: none
Mercer County Chapter, OGS
Website: https://www.mercerogs.net
Email: [email protected]
Miami County Historical and Genealogical Society
Website: https://www.rootsweb.com/~ohmchgs/
Email: [email protected]
Monroe County Chapter, OGS
Website: https://www.rootsweb.com/~ohmccogs/
Email
Montgomery County Chapter, OGS
Website: https://mcc-ogs.org
Email: [email protected]
Morgan County Chapter, OGS
Website
Email
Morrow County Chapter, OGS
Website: https://morrowcountygenealogy.org/
Email: [email protected]
Muskingum County Chapter, OGS
Website
Email
Noble County Chapter, OGS
Website & Facebook
Email
Ottawa County Chapter, OGS
Website: www.ocogs.org
Email: [email protected]
Paulding County Chapter, OGS
Website: https://www.pauldingcountyogs.org
Email: [email protected]
Perry County Chapter, OGS
Website: https://perrycochapterogs.org/
Email: [email protected]
Pickaway County Chapter, OGS
Website: https://www.pickawaygenealogy.org
Email: [email protected]
Pike County Chapter, OGS
Website: https://www.rootsweb.com/~ohpcgs/
Email: [email protected]
The Polish Genealogical Society of Greater Cleveland, OGS
Website: https://pgsgc.org/
Email: https://pgsgc.org/contact-us/
Portage County Chapter, OGS
Website: https://www.portagecountyohioogs.org/
Email: Contact Form on Website
Preble County Chapter, OGS – No Chapter
Putnam County Chapter, OGS – No Chapter
Richland County Chapter, OGS
Website
Email: [email protected]
Richland-Shelby Chapter, OGS
Website: https://shelbyohiohistory.wordpress.com/
Email: [email protected]
Ross County Chapter, OGS
Website: https://rcgsohio.org
Email: [email protected]
Sandusky County Chapter, OGS
Website: https://www.kinhunters.org/
Email: [email protected]
Scioto County Chapter, OGS
Website: https://www.sccogs.com
Email: [email protected]
Seneca County Chapter, OGS
Website: https://www.seneca-searchers.org/
Email: see https://www.seneca-searchers.org/contact-us.html
Shelby County Chapter, OGS
Website: https://shelbycountygenealogy.org/
Email: [email protected]
Southern Ohio Chapter of Highland County, OGS
Website: https://www.sogs.info/
Email: [email protected]
Stark County Chapter, OGS
Website: https://www.starkcountyogs.org/
Email: [email protected]
Summit County Chapter, OGS
Website: https://www.summitogs.org
Email: [email protected]
Toledo Polish Genealogical Society
Website: https://toledopgs.com
Email: [email protected]
Trumbull County Chapter, OGS
Website & Facebook
Email
Tuscarawas County Chapter, OGS
Website: https://www.tuscogene.com/
Email: [email protected]
Union County Chapter, OGS
Website: https://www.uccogs.org
Email: [email protected]
Van Wert County Chapter, OGS – No Chapter
Vinton County Chapter, OGS
Website: None
Email: [email protected]
Warren County Chapter, OGS
Website: https://www.wcgsohio.org/
Email: [email protected]
Washington County Chapter, OGS
Website: https://www.washogs.org/
Email: [email protected]
Wayne County Chapter, OGS – Closed
Website: None
Email: [email protected]
Williams County Chapter, OGS
Facebook: https://www.facebook.com/genealogyohio.wmscounty.7
Email: [email protected]
Wood County Chapter, OGS
Website: https://www.wcogs.org/
Email: [email protected]