The graph below ranks each Ohio County by total residents according to the 2006 census estimates.

Ohio total population by county

CountyTotal Population
CuyahogaCuyahoga County total population - 1,314,2411,314,241  
FranklinFranklin County total population - 1,095,6621,095,662
HamiltonHamilton County total population - 822,596822,596
SummitSummit County total population - 545,931545,931
MontgomeryMontgomery County total population - 542,237542,237
LucasLucas County total population - 445,281445,281
StarkStark County total population - 380,575380,575
ButlerButler County total population - 354,992354,992
LorainLorain County total population - 301,993301,993
MahoningMahoning County total population - 251,026251,026
LakeLake County total population - 232,892232,892
TrumbullTrumbull County total population - 217,362217,362
WarrenWarren County total population - 201,871201,871
ClermontClermont County total population - 192,706192,706
MedinaMedina County total population - 169,353169,353
DelawareDelaware County total population - 156,697156,697
LickingLicking County total population - 156,287156,287
PortagePortage County total population - 155,012155,012
GreeneGreene County total population - 152,298152,298
ClarkClark County total population - 141,872141,872
FairfieldFairfield County total population - 140,591140,591
RichlandRichland County total population - 127,010127,010
WoodWood County total population - 124,183124,183
WayneWayne County total population - 113,950113,950
ColumbianaColumbiana County total population - 110,542110,542
AllenAllen County total population - 105,788105,788
AshtabulaAshtabula County total population - 102,703102,703
MiamiMiami County total population - 101,914101,914
GeaugaGeauga County total population - 95,67695,676
TuscarawasTuscarawas County total population - 91,76691,766
MuskingumMuskingum County total population - 86,12586,125
ErieErie County total population - 78,11678,116
SciotoScioto County total population - 76,44176,441
RossRoss County total population - 75,55675,556
HancockHancock County total population - 73,82473,824
JeffersonJefferson County total population - 70,12570,125
BelmontBelmont County total population - 68,77168,771
MarionMarion County total population - 65,58365,583
LawrenceLawrence County total population - 63,17963,179
WashingtonWashington County total population - 61,86761,867
AthensAthens County total population - 61,86061,860
SanduskySandusky County total population - 61,62561,625
HuronHuron County total population - 60,31360,313
KnoxKnox County total population - 58,56158,561
SenecaSeneca County total population - 57,25557,255
AshlandAshland County total population - 54,72754,727
PickawayPickaway County total population - 53,60653,606
DarkeDarke County total population - 52,78052,780
ShelbyShelby County total population - 48,88448,884
AuglaizeAuglaize County total population - 47,06047,060
UnionUnion County total population - 46,70246,702
LoganLogan County total population - 46,18946,189
CrawfordCrawford County total population - 45,04745,047
BrownBrown County total population - 44,42344,423
ClintonClinton County total population - 43,39943,399
FultonFulton County total population - 42,90042,900
HighlandHighland County total population - 42,83342,833
PreblePreble County total population - 42,49142,491
HolmesHolmes County total population - 41,57441,574
MadisonMadison County total population - 41,49641,496
OttawaOttawa County total population - 41,33141,331
MercerMercer County total population - 41,30341,303
GuernseyGuernsey County total population - 40,87640,876
ChampaignChampaign County total population - 39,92139,921
DefianceDefiance County total population - 39,09139,091
WilliamsWilliams County total population - 38,71938,719
CoshoctonCoshocton County total population - 36,97636,976
PerryPerry County total population - 35,31335,313
PutnamPutnam County total population - 34,74434,744
MorrowMorrow County total population - 34,52934,529
JacksonJackson County total population - 33,54333,543
HardinHardin County total population - 31,96631,966
GalliaGallia County total population - 31,31331,313
HenryHenry County total population - 29,52029,520
Van WertVan Wert County total population - 29,30329,303
CarrollCarroll County total population - 29,18929,189
HockingHocking County total population - 28,97328,973
AdamsAdams County total population - 28,51628,516
FayetteFayette County total population - 28,30528,305
PikePike County total population - 28,26928,269
MeigsMeigs County total population - 23,09223,092
WyandotWyandot County total population - 22,55322,553
PauldingPaulding County total population - 19,43219,432
HarrisonHarrison County total population - 15,79915,799
MorganMorgan County total population - 14,82114,821
MonroeMonroe County total population - 14,60614,606
NobleNoble County total population - 14,16514,165
VintonVinton County total population - 13,51913,519

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Ohio population comparison tables
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Ohio Public Records

Ohio Court Records