|
County
|
Peak Year
|
Answer
|
Peak Population
|
|
Cuyahoga
|
1950
|
Cleveland
|
914,808
|
|
Franklin
|
2010
|
Columbus
|
787,033
|
|
Hamilton
|
1950
|
Cincinnati
|
503,998
|
|
Lucas
|
1970
|
Toledo
|
383,818
|
|
Summit
|
1960
|
Akron
|
290,351
|
|
Montgomery
|
1960
|
Dayton
|
262,332
|
|
Mahoning
|
1930
|
Youngstown
|
170,002
|
|
Stark
|
1950
|
Canton
|
116,912
|
|
Cuyahoga
|
1970
|
Parma
|
100,216
|
|
Clark
|
1960
|
Springfield
|
82,723
|
|
Lorain
|
1970
|
Lorain
|
78,185
|
|
Butler
|
1960
|
Hamilton
|
72,345
|
|
Cuyahoga
|
1970
|
Euclid
|
71,552
|
|
Cuyahoga
|
1930
|
Lakewood
|
70,509
|
|
Montgomery
|
1970
|
Kettering
|
69,599
|
|
Trumbull
|
1970
|
Warren
|
63,494
|
|
Cuyahoga
|
1960
|
Cleveland Heights
|
61,813
|
|
Lorain
|
1980
|
Elyria
|
57,538
|
|
Richland
|
1970
|
Mansfield
|
55,047
|
|
Allen
|
1970
|
Lima
|
53,734
|
|
Butler
|
2000
|
Middletown
|
51,605
|
|
Lake
|
2000
|
Mentor
|
50,278
|
|
Summit
|
1970
|
Cuyahoga Falls
|
49,678
|
|
Licking
|
2010
|
Newark
|
47,573
|
|
Greene
|
2010
|
Beavercreek
|
45,193
|
|
Cuyahoga
|
2010
|
Strongsville
|
44,750
|
|
Scioto
|
1930
|
Portsmouth
|
42,560
|
|
Butler
|
2010
|
Fairfield
|
42,510
|
|
Franklin
|
2010
|
Dublin
|
41,751
|
|
Cuyahoga
|
1970
|
Garfield Heights
|
41,417
|
|
Hancock
|
2010
|
Findlay
|
41,202
|
|
Muskingum
|
1950
|
Zanesville
|
40,517
|
|
Cuyahoga
|
1950
|
East Cleveland
|
40,047
|
|
Fairfield
|
2010
|
Lancaster
|
38,780
|
|
Franklin
|
1970
|
Upper Arlington
|
38,727
|
|
Montgomery
|
1990
|
Huber Heights
|
38,696
|
|
Marion
|
1970
|
Marion
|
38,646
|
|
Jefferson
|
1940
|
Steubenville
|
37,651
|
|
Cuyahoga
|
1980
|
North Olmsted
|
36,480
|
|
Cuyahoga
|
1960
|
Shaker Heights
|
36,460
|
|
Franklin
|
2010
|
Westerville
|
36,120
|
|
Franklin
|
2010
|
Reynoldsburg
|
35,893
|
|
Franklin
|
2010
|
Grove City
|
35,575
|
|
Hamilton
|
1950
|
Norwood
|
35,001
|
|
Summit
|
2010
|
Stow
|
34,837
|
|
Delaware
|
2010
|
Delaware
|
34,753
|
|
Medina
|
2010
|
Brunswick
|
34,255
|
|
Cuyahoga
|
1970
|
Maple Heights
|
34,093
|
|
Summit
|
1960
|
Barberton
|
33,805
|
|
Franklin
|
2010
|
Gahanna
|
33,248
|
|
Cuyahoga
|
2010
|
Westlake
|
32,729
|
|
Erie
|
1970
|
Sandusky
|
32,674
|
|
Stark
|
1970
|
Massillon
|
32,539
|
|
Greene
|
2010
|
Fairborn
|
32,352
|
|
Cuyahoga
|
1970
|
Brook Park
|
30,774
|
|
Warren
|
2010
|
Mason
|
30,712
|
|
Cuyahoga
|
2010
|
North Royalton
|
30,444
|
|
Wood
|
2010
|
Bowling Green
|
30,028
|
|
Cuyahoga
|
1970
|
South Euclid
|
29,579
|
|
Lorain
|
2010
|
North Ridgeville
|
29,465
|
|
Portage
|
2010
|
Kent
|
28,904
|
|
Stark
|
1960
|
Alliance
|
28,362
|
|
Franklin
|
2010
|
Hilliard
|
28,234
|
|
Montgomery
|
2000
|
Trotwood
|
27,420
|
|
Cuyahoga
|
1970
|
Parma Heights
|
27,192
|
|
Medina
|
2010
|
Medina
|
26,678
|
|
Columbiana
|
1970
|
East Liverpool
|
26,243
|
|
Wayne
|
2010
|
Wooster
|
26,119
|
|
Greene
|
2010
|
Xenia
|
25,719
|
|
Summit
|
2010
|
Green
|
25,669
|
|
Franklin
|
1970
|
Whitehall
|
25,283
|
|
Montgomery
|
2010
|
Riverside
|
25,201
|
|
Miami
|
2010
|
Troy
|
25,058
|
|
Ross
|
1960
|
Chillicothe
|
24,957
|
|
Ashtabula
|
1960
|
Ashtabula
|
24,559
|
|
Montgomery
|
2010
|
Centerville
|
23,999
|
|
Athens
|
2010
|
Athens
|
23,832
|
|
Cuyahoga
|
2010
|
Solon
|
23,348
|
|
Trumbull
|
1980
|
Niles
|
23,072
|
|
Cuyahoga
|
1970
|
Rocky River
|
22,958
|
|
Lake
|
2000
|
Willoughby
|
22,621
|
|
Lorain
|
2010
|
Avon Lake
|
22,581
|
|
Summit
|
2000
|
Hudson
|
22,439
|
|
Cuyahoga
|
1970
|
Berea
|
22,396
|
|
Cuyahoga
|
1970
|
Mayfield Heights
|
22,139
|
|
Union
|
2010
|
Marysville
|
22,094
|
|
Lake
|
1980
|
Eastlake
|
21,954
|
|
Butler
|
2000
|
Oxford
|
21,943
|
|
Cuyahoga
|
1970
|
Fairview Park
|
21,681
|
|
Seneca
|
1970
|
Tiffin
|
21,596
|
|
Medina
|
2010
|
Wadsworth
|
21,567
|
|
Lake
|
1970
|
Wickliffe
|
21,354
|
|
Ashland
|
2000
|
Ashland
|
21,249
|
|
Lake
|
1970
|
Willowick
|
21,237
|
|
Shelby
|
2010
|
Sidney
|
21,229
|
|
Lorain
|
2010
|
Avon
|
21,193
|
|
Miami
|
2000
|
Piqua
|
20,738
|
|
Wood
|
2010
|
Perrysburg
|
20,623
|
|
Lucas
|
2010
|
Oregon
|
20,291
|
|
Montgomery
|
2010
|
Miamisburg
|
20,181
|
|
Warren
|
2010
|
Lebanon
|
20,033
|
|
Cuyahoga
|
1970
|
Lyndhurst
|
19,749
|
|
Lake
|
2010
|
Painesville
|
19,563
|
|
Hamilton
|
2000
|
Forest Park
|
19,463
|
|
Cuyahoga
|
2010
|
Broadview Heights
|
19,400
|
|
Lucas
|
2010
|
Sylvania
|
18,971
|
|
Cuyahoga
|
1970
|
Warrensville Heights
|
18,925
|
|
Summit
|
2010
|
Twinsburg
|
18,795
|
|
Sandusky
|
1960
|
Fremont
|
18,767
|
|
Fairfield
|
2010
|
Pickerington
|
18,291
|
|
Cuyahoga
|
1970
|
Bay Village
|
18,163
|
|
Cuyahoga
|
1970
|
Bedford
|
17,552
|
|
Summit
|
2010
|
Tallmadge
|
17,537
|
|
Stark
|
2010
|
North Canton
|
17,488
|
|
Warren
|
2010
|
Springboro
|
17,409
|
|
Tuscarawas
|
2010
|
New Philadelphia
|
17,288
|
|
Cuyahoga
|
1970
|
University Heights
|
17,055
|
|
Huron
|
2010
|
Norwalk
|
17,012
|
|
Knox
|
2010
|
Mount Vernon
|
16,990
|
|
Washington
|
1970
|
Marietta
|
16,861
|
|
Defiance
|
1980
|
Defiance
|
16,783
|
|
Lawrence
|
1950
|
Ironton
|
16,333
|
|
Cuyahoga
|
1980
|
Middleburg Heights
|
16,228
|
|
Guernsey
|
1930
|
Cambridge
|
16,129
|
|
Seneca
|
1970
|
Fostoria
|
16,037
|
|
Portage
|
2010
|
Streetsboro
|
16,028
|
|
Lucas
|
1970
|
Maumee
|
15,937
|
|
Mahoning
|
1960
|
Struthers
|
15,631
|
|
Portage
|
2010
|
Aurora
|
15,548
|
|
Franklin
|
1970
|
Worthington
|
15,326
|
|
Montgomery
|
2010
|
Vandalia
|
15,246
|
|
Belmont
|
1920
|
Bellaire
|
15,061
|
|
Licking
|
2010
|
Pataskala
|
14,962
|
|
Franklin
|
1970
|
Bexley
|
14,888
|
|
Belmont
|
1940
|
Martins Ferry
|
14,729
|
|
Mahoning
|
1930
|
Campbell
|
14,673
|
|
|
County
|
Peak Year
|
Answer
|
Peak Population
|
|
Hamilton
|
1970
|
Reading
|
14,617
|
|
Ashtabula
|
1970
|
Conneaut
|
14,552
|
|
Montgomery
|
1990
|
West Carrollton
|
14,403
|
|
Summit
|
2010
|
New Franklin
|
14,227
|
|
Fayette
|
2010
|
Washington Court House
|
14,192
|
|
Columbiana
|
1970
|
Salem
|
14,186
|
|
Trumbull
|
1970
|
Girard
|
14,119
|
|
Hamilton
|
2000
|
Sharonville
|
13,804
|
|
Coshocton
|
1970
|
Coshocton
|
13,747
|
|
Cuyahoga
|
2010
|
Brecksville
|
13,656
|
|
Cuyahoga
|
1980
|
Seven Hills
|
13,650
|
|
Crawford
|
1990
|
Bucyrus
|
13,496
|
|
Pickaway
|
2000
|
Circleville
|
13,485
|
|
Montgomery
|
2010
|
Englewood
|
13,465
|
|
Logan
|
2010
|
Bellefontaine
|
13,370
|
|
Montgomery
|
2000
|
Clayton
|
13,347
|
|
Darke
|
2000
|
Greenville
|
13,294
|
|
Cuyahoga
|
1980
|
Bedford Heights
|
13,214
|
|
Cuyahoga
|
1970
|
Brooklyn
|
13,142
|
|
Crawford
|
1970
|
Galion
|
13,123
|
|
Tuscarawas
|
2010
|
Dover
|
12,826
|
|
Clinton
|
2010
|
Wilmington
|
12,520
|
|
Hamilton
|
2000
|
Blue Ash
|
12,513
|
|
Butler
|
2010
|
Monroe
|
12,442
|
|
Hamilton
|
1970
|
North College Hill
|
12,363
|
|
Summit
|
1970
|
Norton
|
12,308
|
|
Cuyahoga
|
2000
|
Beachwood
|
12,186
|
|
Hamilton
|
2010
|
Loveland
|
12,081
|
|
Portage
|
1990
|
Ravenna
|
12,069
|
|
Lorain
|
2010
|
Amherst
|
12,021
|
|
Butler
|
2010
|
Trenton
|
11,869
|
|
Champaign
|
2010
|
Urbana
|
11,793
|
|
Warren
|
2010
|
Franklin
|
11,771
|
|
Delaware
|
2010
|
Powell
|
11,500
|
|
Van Wert
|
1960
|
Van Wert
|
11,323
|
|
Hamilton
|
2010
|
Springdale
|
11,223
|
|
Summit
|
2010
|
Macedonia
|
11,188
|
|
Hamilton
|
1970
|
Cheviot
|
11,135
|
|
Lorain
|
1990
|
Vermilion
|
11,127
|
|
Cuyahoga
|
2000
|
Richmond Heights
|
10,944
|
|
Montgomery
|
1960
|
Oakwood
|
10,493
|
|
Lorain
|
1980
|
Sheffield Lake
|
10,484
|
|
Huron
|
1970
|
Bellevue
|
10,423
|
|
Mercer
|
2010
|
Celina
|
10,400
|
|
Licking
|
2010
|
Heath
|
10,310
|
|
Hamilton
|
2010
|
Montgomery
|
10,251
|
|
Madison
|
2010
|
London
|
9,904
|
|
Hamilton
|
2010
|
Harrison
|
9,897
|
|
Auglaize
|
2010
|
Wapakoneta
|
9,867
|
|
Richland
|
1970
|
Shelby
|
9,847
|
|
Miami
|
2010
|
Tipp City
|
9,689
|
|
Lake
|
2010
|
Willoughby Hills
|
9,485
|
|
Hamilton
|
1980
|
Madeira
|
9,341
|
|
Henry
|
2000
|
Napoleon
|
9,318
|
|
Trumbull
|
1980
|
Hubbard
|
9,245
|
|
Stark
|
2010
|
Louisville
|
9,186
|
|
Hamilton
|
1970
|
Wyoming
|
9,089
|
|
Cuyahoga
|
2010
|
Olmsted Falls
|
9,024
|
|
Columbiana
|
1920
|
Wellsville
|
8,849
|
|
Gallia
|
1960
|
Gallipolis
|
8,775
|
|
Lorain
|
1970
|
Oberlin
|
8,761
|
|
Hardin
|
1960
|
Kenton
|
8,747
|
|
Wayne
|
2000
|
Orrville
|
8,551
|
|
Williams
|
2010
|
Bryan
|
8,545
|
|
Franklin
|
1970
|
Grandview Heights
|
8,460
|
|
Auglaize
|
1990
|
St. Marys
|
8,441
|
|
Hamilton
|
1960
|
Deer Park
|
8,423
|
|
Preble
|
2010
|
Eaton
|
8,407
|
|
Cuyahoga
|
2010
|
Highland Heights
|
8,345
|
|
Lake
|
1990
|
Mentor-on-the-Lake
|
8,271
|
|
Jackson
|
1900
|
Wellston
|
8,045
|
|
Erie
|
2000
|
Huron
|
7,958
|
|
Hamilton
|
1960
|
Lincoln Heights
|
7,798
|
|
Jefferson
|
1960
|
Toronto
|
7,780
|
|
Franklin
|
2010
|
New Albany
|
7,713
|
|
Allen
|
1970
|
Delphos
|
7,608
|
|
Hamilton
|
1990
|
Mount Healthy
|
7,580
|
|
Mahoning
|
2010
|
Canfield
|
7,515
|
|
Hamilton
|
1930
|
St. Bernard
|
7,487
|
|
Summit
|
2010
|
Fairlawn
|
7,437
|
|
Fulton
|
2010
|
Wauseon
|
7,332
|
|
Ottawa
|
1980
|
Port Clinton
|
7,229
|
|
Washington
|
1980
|
Belpre
|
7,193
|
|
Hocking
|
2010
|
Logan
|
7,152
|
|
Cuyahoga
|
2010
|
Independence
|
7,133
|
|
Trumbull
|
2010
|
Cortland
|
7,104
|
|
Franklin
|
2010
|
Canal Winchester
|
7,101
|
|
Greene
|
2000
|
Bellbrook
|
7,009
|
|
Jackson
|
1960
|
Jackson
|
6,980
|
|
Montgomery
|
2000
|
Moraine
|
6,897
|
|
Lake
|
2010
|
Kirtland
|
6,859
|
|
Huron
|
2000
|
Willard
|
6,806
|
|
Clermont
|
2010
|
Milford
|
6,709
|
|
Hamilton
|
1960
|
Silverton
|
6,682
|
|
Ashtabula
|
1980
|
Geneva
|
6,655
|
|
Lorain
|
2010
|
Grafton
|
6,636
|
|
Tuscarawas
|
1950
|
Uhrichsville
|
6,614
|
|
Highland
|
2010
|
Hillsboro
|
6,605
|
|
Wyandot
|
2010
|
Upper Sandusky
|
6,596
|
|
Clark
|
1980
|
New Carlisle
|
6,498
|
|
Wayne
|
2010
|
Rittman
|
6,491
|
|
Meigs
|
1860
|
Pomeroy
|
6,480
|
|
Athens
|
1920
|
Nelsonville
|
6,440
|
|
Montgomery
|
2010
|
Union
|
6,419
|
|
Wood
|
2000
|
Rossford
|
6,406
|
|
Columbiana
|
2010
|
Columbiana
|
6,384
|
|
Sandusky
|
2010
|
Clyde
|
6,325
|
|
Richland
|
2010
|
Ontario
|
6,225
|
|
Cuyahoga
|
1990
|
Pepper Pike
|
6,185
|
|
Hamilton
|
1970
|
Greenhills
|
6,092
|
|
Scioto
|
1940
|
New Boston
|
6,024
|
|
Hardin
|
2010
|
Ada
|
5,952
|
|
Crawford
|
1970
|
Crestline
|
5,947
|
|
Hamilton
|
2000
|
Indian Hill
|
5,907
|
|
Montgomery
|
2010
|
Brookville
|
5,884
|
|
Columbiana
|
1920
|
East Palestine
|
5,750
|
|
Hamilton
|
1950
|
Lockland
|
5,736
|
|
Licking
|
2010
|
Granville
|
5,646
|
|
Montgomery
|
2010
|
Germantown
|
5,547
|
|
Tuscarawas
|
1920
|
Dennison
|
5,524
|
|
Lucas
|
2010
|
Waterville
|
5,523
|
|
Wood
|
1990
|
Northwood
|
5,506
|
|
Stark
|
2010
|
Canal Fulton
|
5,479
|
|
Belmont
|
1980
|
St. Clairsville
|
5,452
|
|
Highland
|
1960
|
Greenfield
|
5,422
|
|
Trumbull
|
1970
|
Newton Falls
|
5,378
|
|
Franklin
|
2010
|
Groveport
|
5,363
|
|
Summit
|
1990
|
Munroe Falls
|
5,359
|
|
Jefferson
|
1970
|
Mingo Junction
|
5,278
|
|
Perry
|
1980
|
New Lexington
|
5,179
|
|
Hamilton
|
1970
|
Golf Manor
|
5,170
|
|
Geauga
|
2000
|
Chardon
|
5,156
|
|
Warren
|
2000
|
Carlisle
|
5,121
|
|
Mahoning
|
1980
|
Sebring
|
5,078
|
|
Belmont
|
1970
|
Shadyside
|
5,070
|
|
Belmont
|
1940
|
Barnesville
|
5,002
|
|
