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Ohio counties

88counties

4,297historic places

7,728newspaper titles

History layers

Statewide

88 counties have formation records (oldest: Washington County, 1788). 88 counties have decade population series. 18 counties have nearby NPS units. 88 counties have GNIS places (7,441 cemeteries statewide in this extract).

See each county page for charts, formation parents, NPS sites, cemeteries, battlefields, and HMdb links.

Adams County 16 places · 32 papers
Allen County 31 places · 97 papers
Ashland County 20 places · 34 papers
Ashtabula County 41 places · 116 papers
Athens County 29 places · 40 papers
Auglaize County 23 places · 43 papers
Belmont County 27 places · 44 papers
Brown County 27 places · 48 papers
Butler County 94 places · 122 papers
Carroll County 11 places · 39 papers
Champaign County 35 places · 87 papers
Clark County 45 places · 152 papers
Clermont County 28 places · 50 papers
Clinton County 18 places · 52 papers
Columbiana County 45 places · 140 papers
Coshocton County 20 places · 51 papers
Crawford County 26 places · 55 papers
Cuyahoga County 456 places · 772 papers
Darke County 26 places · 40 papers
Defiance County 12 places · 34 papers
Delaware County 60 places · 65 papers
Erie County 181 places · 105 papers
Fairfield County 50 places · 91 papers
Fayette County 17 places · 42 papers
Franklin County 365 places · 419 papers
Fulton County 7 places · 29 papers
Gallia County 9 places · 29 papers
Geauga County 18 places · 53 papers
Greene County 49 places · 118 papers
Guernsey County 22 places · 46 papers
Hamilton County 410 places · 743 papers
Hancock County 14 places · 55 papers
Hardin County 7 places · 44 papers
Harrison County 7 places · 80 papers
Henry County 4 places · 18 papers
Highland County 28 places · 56 papers
Hocking County 13 places · 30 papers
Holmes County 16 places · 21 papers
Huron County 18 places · 71 papers
Jackson County 14 places · 41 papers
Jefferson County 26 places · 66 papers
Knox County 45 places · 63 papers
Lake County 83 places · 109 papers
Lawrence County 21 places · 30 papers
Licking County 66 places · 133 papers
Logan County 10 places · 69 papers
Lorain County 124 places · 180 papers
Lucas County 104 places · 208 papers
Madison County 11 places · 40 papers
Mahoning County 78 places · 128 papers
Marion County 20 places · 51 papers
Medina County 33 places · 66 papers
Meigs County 10 places · 43 papers
Mercer County 30 places · 36 papers
Miami County 47 places · 93 papers
Monroe County 11 places · 21 papers
Montgomery County 164 places · 295 papers
Morgan County 6 places · 28 papers
Morrow County 15 places · 18 papers
Muskingum County 84 places · 98 papers
Noble County 11 places · 13 papers
Ottawa County 32 places · 45 papers
Paulding County 5 places · 22 papers
Perry County 15 places · 57 papers
Pickaway County 33 places · 47 papers
Pike County 8 places · 29 papers
Portage County 52 places · 108 papers
Preble County 20 places · 60 papers
Putnam County 10 places · 31 papers
Richland County 71 places · 106 papers
Ross County 45 places · 89 papers
Sandusky County 12 places · 83 papers
Scioto County 44 places · 65 papers
Seneca County 46 places · 92 papers
Shelby County 19 places · 21 papers
Stark County 92 places · 130 papers
Summit County 189 places · 153 papers
Trumbull County 42 places · 82 papers
Tuscarawas County 27 places · 67 papers
Union County 11 places · 38 papers
Van Wert County 8 places · 36 papers
Vinton County 11 places · 25 papers
Warren County 54 places · 59 papers
Washington County 39 places · 59 papers
Wayne County 24 places · 61 papers
Williams County 7 places · 36 papers
Wood County 33 places · 100 papers
Wyandot County 10 places · 35 papers