Data / Rankings / Population density / Counties in Ohio

Counties in Ohio by population density, 2025

Cuyahoga County had the highest population density of 88 counties in 2025, at 1,041.1 inhabitants per km². Monroe County had the lowest, at 11 inhabitants per km². The median was 46.2 inhabitants per km² and the figure for Ohio was 112.5 inhabitants per km². Source: the U.S. Census Bureau.

Highest1,041.1Cuyahoga County
Lowest11Monroe County
Median46.288 counties
Ohio112.5History

Top 40 counties, 2025

CSVChart (SVG)

Cuyahoga CountyCuyahoga County: 1,041.1 inhabitants per km²1,041.1Franklin CountyFranklin County: 987.3 inhabitants per km²987.3Hamilton CountyHamilton County: 798.4 inhabitants per km²798.4Summit CountySummit County: 503.7 inhabitants per km²503.7Lucas CountyLucas County: 481.2 inhabitants per km²481.2Montgomery CountyMontgomery County: 451.6 inhabitants per km²451.6Lake CountyLake County: 390.9 inhabitants per km²390.9Butler CountyButler County: 331.1 inhabitants per km²331.1Lorain CountyLorain County: 254.4 inhabitants per km²254.4Stark CountyStark County: 251 inhabitants per km²251Warren CountyWarren County: 247.4 inhabitants per km²247.4Delaware CountyDelaware County: 210.9 inhabitants per km²210.9Mahoning CountyMahoning County: 210.8 inhabitants per km²210.8Clermont CountyClermont County: 185.1 inhabitants per km²185.1Medina CountyMedina County: 169.5 inhabitants per km²169.5Greene CountyGreene County: 162.7 inhabitants per km²162.7Clark CountyClark County: 132 inhabitants per km²132Fairfield CountyFairfield County: 129.9 inhabitants per km²129.9Portage CountyPortage County: 129.4 inhabitants per km²129.4Trumbull CountyTrumbull County: 124.4 inhabitants per km²124.4Erie CountyErie County: 112.6 inhabitants per km²112.6Miami CountyMiami County: 107 inhabitants per km²107Licking CountyLicking County: 105 inhabitants per km²105Richland CountyRichland County: 97.4 inhabitants per km²97.4Allen CountyAllen County: 96.8 inhabitants per km²96.8Geauga CountyGeauga County: 92.3 inhabitants per km²92.3Wood CountyWood County: 83.9 inhabitants per km²83.9Wayne CountyWayne County: 81.2 inhabitants per km²81.2Columbiana CountyColumbiana County: 72.1 inhabitants per km²72.1Union CountyUnion County: 65.7 inhabitants per km²65.7Tuscarawas CountyTuscarawas County: 62.8 inhabitants per km²62.8Marion CountyMarion County: 62.3 inhabitants per km²62.3Jefferson CountyJefferson County: 60.2 inhabitants per km²60.2Ottawa CountyOttawa County: 59.9 inhabitants per km²59.9Sandusky CountySandusky County: 55.5 inhabitants per km²55.5Hancock CountyHancock County: 54.5 inhabitants per km²54.5Ashtabula CountyAshtabula County: 53.2 inhabitants per km²53.2Muskingum CountyMuskingum County: 50.6 inhabitants per km²50.6Pickaway CountyPickaway County: 48.5 inhabitants per km²48.5Athens CountyAthens County: 48.4 inhabitants per km²48.4
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2025
inhabitants per km²		Change on 2024
1Cuyahoga County1,041.1-0.1%
2Franklin County987.3+0.7%
3Hamilton County798.4+0.1%
4Summit County503.7+0.3%
5Lucas County481.2-0.2%
6Montgomery County451.6+0.5%
7Lake County390.90%
8Butler County331.1+0.6%
9Lorain County254.4+0.6%
10Stark County251+0.1%
11Warren County247.4+0.8%
12Delaware County210.9+2.2%
13Mahoning County210.8-0%
14Clermont County185.1+1.2%
15Medina County169.5+0.4%
16Greene County162.7+1.3%
17Clark County132-0.6%
18Fairfield County129.9+1.2%
19Portage County129.4+0.1%
20Trumbull County124.4-0.4%
21Erie County112.6-0.5%
22Miami County107+0.7%
23Licking County105+0.7%
24Richland County97.4-0.1%
25Allen County96.8-0.1%
26Geauga County92.3+0.4%
27Wood County83.9+0.8%
28Wayne County81.2+0.2%
29Columbiana County72.1-0.3%
30Union County65.7+2%
31Tuscarawas County62.8+0.2%
32Marion County62.3+0.4%
33Jefferson County60.2-0.4%
34Ottawa County59.9-0.6%
35Sandusky County55.50%
36Hancock County54.5+0.4%
37Ashtabula County53.2-0%
38Muskingum County50.6+0.8%
39Pickaway County48.5+1.2%
40Athens County48.4+0.2%
41Ashland County47.9+0.2%
42Lawrence County47.4-0.4%
43Knox County47+0.7%
44Belmont County46.7-0.5%
45Huron County45.70%
46Shelby County45.5+0.2%
47Scioto County45.2-0.6%
48Auglaize County44.2-0.1%
49Ross County42.8+0.6%
50Holmes County41.1+0.5%
51Crawford County40.3+0.9%
52Clinton County40+0.6%
53Fulton County39.9-0.5%
54Logan County39+0.5%
55Madison County38.9+2.6%
56Seneca County38.2-0.3%
57Preble County37-0.1%
58Defiance County35.9-0.1%
59Mercer County35.7+0.5%
60Washington County35.7-0.4%
61Brown County35+0.5%
62Champaign County34.9+0.3%
63Morrow County34.5+0.8%
64Perry County34+0.6%
65Williams County33.5-0.2%
66Darke County33.3+0.1%
67Highland County30.6+0.3%
68Jackson County30.1+0.2%
69Guernsey County28.4+0.1%
70Putnam County27.5+0.6%
71Van Wert County27.4+0.5%
72Fayette County27.1-0.5%
73Carroll County25.9-0.3%
74Henry County25.6+0.3%
75Coshocton County25.5+0.5%
76Hocking County25.2+0.2%
77Hardin County24.7-0.6%
78Gallia County24.1+0.4%
79Pike County23.7-0.1%
80Wyandot County20.50%
81Meigs County19.4+0.1%
82Adams County18.4+0.8%
83Paulding County17.4-0.2%
84Noble County13.9+0.1%
85Harrison County13.5-0.2%
86Morgan County12.6+0.2%
87Vinton County11.8+0.7%
88Monroe County11-0.6%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

Which county has the highest population density?

Cuyahoga County, with 1,041.1 inhabitants per km² in 2025, according to the U.S. Census Bureau.

Which county has the lowest population density?

Monroe County, with 11 inhabitants per km² in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.

Population density: other rankings

Counties in Ohio: more rankings